vladislav, Author at VS Builders

Extension vs Retrofit: Which Option Saves More Money in Dublin?

Every Dublin homeowner hits this wall at some point. The house feels too small, too cold, or both. You start researching, and suddenly two options are staring at you: build an extension or retrofit what you already have. Both cost money. Both take time. But which one actually gives you more back?

This guide breaks it down honestly, without padding it out with waffle.

What Are We Actually Comparing?

Before diving into numbers, it helps to be clear on what each option involves.

A house extension adds physical space to your home. Think of a kitchen extension, a rear addition, or an extra room. You’re literally making the building bigger.

A deep retrofit is different. It doesn’t add space. Instead, it upgrades what exists: insulation, windows, heating systems and airtightness. The goal is to make your current home far more energy-efficient and comfortable to live in.

Both are legitimate investments. The question is which one delivers more value for your specific situation in Dublin.

The Real Cost Breakdown

House Extensions in Dublin

A standard single-storey rear extension in Dublin typically ranges from €1,500 to €2,500 per square meter, depending on finish and spec. A modest 20 sqm kitchen extension could run anywhere from €30,000 to €60,000 once you factor in planning, design, structural work, and fit-out.

Key cost drivers include:

• Planning permission (not always required, but often needed)
• Structural engineer fees
• Building materials and labour
• Internal fit-out (kitchens, flooring, electrics, plumbing)
• Project management

One thing worth knowing: Core and Shell extensions offer a more affordable entry point. VS Builders provides this option, where the structure is completed to a watertight state, and the client handles the interior finish themselves. It keeps upfront costs lower while still adding real square footage.

House Deep Retrofit in Dublin

A full house deep retrofit in Dublin varies considerably based on the age and current condition of the property. An older semi-detached could see costs from €30,000 to €80,000 for a comprehensive upgrade.

That sounds steep. But here’s where it changes: SEAI grants.

The Sustainable Energy Authority of Ireland offers substantial support for homeowners who undertake qualifying energy upgrades. These grants can offset a significant portion of the total cost, making deep retrofits more financially accessible than most people expect.

What a full retrofit typically covers:

• External wall insulation or internal wood fibre insulation
• Attic and floor insulation
• Triple-glazed windows and doors
• Heat pump installation
• Ventilation systems (MVHR)
• Airtightness improvements

VS Builders handles the complete scope of deep retrofit projects in Dublin, from SEAI grant registration through to final handover.

Which One Saves More Money Long-Term?

This is the crux of it. And the honest answer is: it depends on what problem you’re solving.

If Your Bills Are Eating Your Budget

A retrofit wins here, and it’s not particularly close. Homes upgraded to a B2 or higher BER rating see average annual energy savings of €1,000 to €3,500, depending on size and pre-retrofit rating. Over ten years, that compounds significantly.

An extension adds space, but it can also increase your heating bills if the existing fabric of the house isn’t already efficient. Adding square footage to a poorly insulated home often means spending more on energy, not less.

If Your Family Has Outgrown the Space

An extension wins here, obviously. A retrofit won’t create an extra bedroom or open up your kitchen. When space is the actual problem, it’s the only real solution.

That said, smart homeowners often combine both. VS Builders frequently works on projects where a kitchen extension is paired with insulation upgrades to the rest of the property.

It’s a practical approach: fix the space problem and the energy problem in one programme of work.

If You’re Planning to Sell in the Next Few Years

Both options add value, but retrofits have become increasingly attractive to buyers in Dublin. With rising energy costs, a home with a strong BER rating commands a notable premium on the open market.

Studies suggest properties rated A or B can achieve 10-15% higher sale prices compared to equivalent D or E-rated homes.

Extensions also add value, particularly rear kitchen extensions, which consistently rank among the highest-return renovations in Irish residential property.

Hidden Costs That Catch People Off Guard

Whether you choose extension or retrofit, some costs don’t always appear in the initial quote.

For extensions:

• Temporary accommodation if the build disrupts the kitchen or main living area
• Landscaping after construction
• Furniture and décor for the new space
• Possible delays due to planning or weather

For retrofits:

• Potential decanting from rooms during insulation works (though VS Builders notes most clients stay in their homes throughout)

• Upgrade costs to electrical systems if heat pump installation requires panel upgrades

• Disruption during window replacement

The good news on retrofits: the grant process, while administratively involved, is well established. VS Builders guides clients through the SEAI grant application process from start to finish, which removes a lot of the complexity.

How Long Does Each Project Take?

Timelines are worth factoring in. Here’s a general guide:

Project Type	Typical Duration
Kitchen Extension (Standard)	8–12 Weeks
Full House Extension	12–20 Weeks
Partial Retrofit (Insulation + Windows)	4–8 Weeks
Full Deep Retrofit	10–18 Weeks

VS Builders typically scopes projects clearly at the outset so clients know what to expect before work begins.

The VS Builders Approach

VS Builders has been working on Dublin homes since 2010. Their team carries over 25 years of combined experience across renovations, extensions, and energy retrofit projects.

What makes their approach worth noting is the breadth. Many contractors do either extensions or retrofits. VS Builders handles both, which matters when a homeowner wants to address space and energy in a coordinated way rather than managing two separate contractors.

Their services include:

• House deep retrofits (SEAI-compliant)
• Kitchen and house extensions
• External wall insulation and wood fibre insulation
• Windows and doors installation
• Sound insulation
• Enerphit Retrofit (Passive House standard)
• Period property renovation

They operate primarily across South Dublin, including Blackrock, Stillorgan, Dundrum, Knocklyon, and Castleknock.

House Extensions Dublin

Making the Right Call for Your Home

Here’s a simple framework to guide the decision:

Choose a retrofit if:

• Energy bills are a significant concern
• The home feels cold, damp, or difficult to heat
• Planning to sell within three to five years
• The current space is adequate for your needs

Choose an extension if:

• Additional rooms or living spaces are genuinely needed
• The home’s energy performance is already reasonable
• Budget allows for a larger upfront investment

Consider both if:

• The home needs more space AND has poor energy performance
• Planning a major renovation and want to address everything at once
• Long-term value and comfort are both priorities

A Word on Grants and Incentives

SEAI grants currently available for Dublin homeowners include support for:

• Attic insulation: up to €1,500
• Wall insulation: up to €8,000
• Heat pumps: up to €6,500
• Windows and doors: up to €1,500 per unit (capped)
• Deep retrofit one-stop-shop: substantial combined grants

These rates vary with time intervals, thus, always confirm actual rates with SEAI on its own or by a registered contractor such as VS Builders, which does the paperwork as part of its service.

Building Smart, Not Just Big

The Dublin housing conversation often centres on space. Bigger kitchens, extra bedrooms, more room. But energy performance is becoming just as central to how people value their homes.

The smartest investment depends entirely on where your home falls short. A cold, expensive-to-heat home needs a retrofit first. A cramped but efficient home needs an extension. And a home that’s both? That’s where a contractor who handles the full scope becomes genuinely useful.

VS Builders has built a track record across both disciplines in Dublin. Their crew exhibits a no-unnecessary attitude to what is, to most homeowners, a very big financial choice.

Frequently Asked Questions

Q1: Is a house extension or a retrofit better for adding value before selling in Dublin?

Each adds value, but retrofits can be more profitable in the current market with increasing material buyer interest in energy-saving homes with high BER ratings.

Q2: Can I get SEAI grants for a house extension in Dublin?

SEAI grants are limited to energy efficiency only, not structural extensions, but an extension combined with qualifying insulation upgrades may contain elements eligible for a grant.

Q3: Do I need planning permission for a house extension in Dublin?

Not always. Many single-storey extensions fall within permitted development rights, but it depends on size, location, and property type. Professional advice is recommended first.

Q4: How much can a deep retrofit actually reduce my energy bills in Dublin?

A properly completed deep retrofit can reduce annual energy costs by €1,000 to €3,500, depending on the home’s size and its pre-retrofit energy rating.

Q5: Can VS Builders handle both an extension and a retrofit on the same project?

Yes. VS Builders is also used to dealing with combined projects where extensions and energy upgrades are carried out simultaneously making it much easier for the homeowner.

Budgeting for a Home Upgrade in Dublin: Extensions, Retrofits & Renovations Explained

Dublin homes are unique. Older builds, tight plots, period architecture, and the constant push for more space all add up to a very specific kind of challenge when you decide to upgrade your home.

And the costs? They can feel overwhelming before you even start.

This guide breaks it all down clearly, honestly, and without the complexity. Whether you’re planning a kitchen extension, a full deep retrofit, or a period property renovation, here’s what you need to know before spending a single euro.

Why Dublin Homeowners Are Investing in Upgrades Right Now

The short answer: energy costs, space needs, and property value.

The longer answer is a bit more interesting. Dublin’s housing market remains competitive. Extensions and retrofits genuinely increase what a home is worth.

At the same time, older Irish homes, particularly those built before the 1980s, are expensive to heat and often poorly insulated.

Home upgrades in Dublin are no longer a luxury. For many families, they’re a financial decision that makes long-term sense.

Three main motivators tend to drive the decision:

• Rising energy bills are pushing homeowners toward energy-efficient solutions
• Growing families need more functional living space
• The desire to modernize older or period properties without moving

The Three Main Types of Home Upgrades and What Each Actually Costs

House Extensions

A house extension in Dublin typically adds a room, expands a kitchen, or creates an open-plan living area. These projects range considerably in scope.

What affects the cost:

• Size of the extension (square footage)
• Single-storey vs double-storey structure
• Planning permission requirements
• Finish level: basic shell or fully fitted

A core and shell extension (where the structure is built weathertight but left for you to finish internally) is a popular mid-budget option. It gives you a solid, professional external build while allowing flexibility on internal costs and timing.

Rough budget guidance for Dublin extensions:

• Small single-storey extension: from €50,000–€80,000
• Larger rear or side extension: €80,000–€150,000+
• Double-storey extension: typically, €120,000 and above

These are estimates. Every site, every home, and every brief is different.

Kitchen Extensions Specifically

Kitchen extensions deserve their own mention because they’re among the most popular and most value-adding projects in Dublin right now.

A well-planned kitchen extension does three things: brings in natural light, creates usable family space, and increases the property’s appeal.

The key costs to factor in:

• Structural build and glazing
• Kitchen design and fitting
• Underfloor heating (common in extensions)
• Planning and architectural fees

A realistic budget for a quality kitchen extension in Blackrock or wider South Dublin sits between €60,000 and €100,000, depending on specification.

Tips for keeping kitchen extension costs manageable:

• Get detailed quotes before finalizing the design
• Fix your specification early; changes mid-build is expensive
• Ask whether a phased approach (shell first, kitchen fit-out later) suits your budget
• Explore SEAI grants if adding energy measures at the same time

House Deep Retrofits

This one is gaining serious momentum in Dublin and for good reason.

A deep retrofit is a comprehensive energy upgrade. It addresses insulation, windows, doors, heating systems, and ventilation in one coordinated project. Done properly, it can dramatically cut heating bills and improve the comfort of a home.

What a full deep retrofit typically includes:

• External wall insulation (or internal, depending on the property)
• Roof and attic insulation
• Triple-glazed windows and insulated doors
• Air source heat pump installation
• Mechanical ventilation with heat recovery (MVHR)
• Airtightness measures throughout

The SEAI grant situation is worth understanding. The Sustainable Energy Authority of Ireland offers meaningful financial support for homeowners undertaking energy-efficient upgrades. Grants can range from a few thousand euros for individual measures up to significantly larger amounts for full Enerphit-standard retrofits.

Estimated costs for deep retrofits in Dublin:

• Partial retrofit (insulation + windows): €20,000–€40,000
• Full deep retrofit: €50,000–€90,000+
• Enerphit-standard (Passive House retrofit): €90,000 and above

After SEAI grants, the net cost comes down considerably. A reputable building contractor in Dublin will walk you through what you’re eligible for.

Period Property Renovations

Older Dublin homes, Victorian terraces, Edwardian semis and 1930s semis have enormous charm. They also come with particular challenges.

Period property renovation in Dublin requires a contractor who understands both traditional building methods and modern performance standards. Not all firms have that combination.

What makes period renovations more complex (and more costly):

• Lime plaster and specialist finishes
• Structural quirks that only emerge once work begins
• Sensitivity to planning conservation rules in certain areas
• Matching original materials for extensions or alterations

Budget planning here needs a contingency. Build in at least 10–15% on top of your quoted price for unexpected findings. It’s not pessimism, it’s just the reality of older buildings.

How to Budget Sensibly for a Dublin Home Upgrade

Getting the budget right is the part most homeowners struggle with. Here’s a practical framework.

Step 1: Define Your Brief Clearly

Vague briefs lead to vague quotes. Be specific about what you want, what your non-negotiables are, and what you’re flexible on.

Step 2: Get Multiple Quotes

Not to drive prices down aggressively, but to understand the range and to identify contractors who genuinely understand your project.

Step 3: Understand the Full Cost

The build cost is not the total cost. Factor in:

• Architect or designer fees (typically 8–12% of build cost)
• Planning applications and structural engineer reports
• VAT (currently 13.5% on construction services in Ireland)
• Temporary accommodation if required
• Landscaping or reinstatement following works.

Step 4: Plan for Contingency

For renovations: add 10–15%. For extensions: add 10%. For period properties: add 15% minimum.

Step 5: Explore Grants Early

SEAI grant eligibility, Vacant Property Refurbishment Grants and local authority schemes can meaningfully reduce net costs. Speak to your contractor before finalizing your budget, not after.

What to Look for in a Dublin Building Contractor

The quality of your contractor shapes everything cost to timeline to outcome to stress levels.

The main questions to be posed prior to the appointment of any person:

• Are they fully insured and licensed?
• Do they have experience with your specific type of project?
• Can they provide references from similar Dublin projects?
• Will they help with planning and grants?
• Do they offer a structured process from consultation through handover?

VS Builders, based in Stillorgan and operating across Dublin since 2010, works across all of these project types: extensions, retrofits, period renovations, insulation, and energy upgrades.

Their team brings over 25 years of combined experience and a clear, structured four-step process: consultation, design, construction, and final review with post-project support included.

House Extensions Dublin

A Quick Cost Summary: Dublin Home Upgrades at a Glance

Project Type	Estimated Cost Range
Kitchen Extension	€60,000 – €100,000+
House Extension (Single Storey)	€50,000 – €100,000
House Extension (Double Storey)	€120,000+
Partial Retrofit	€20,000 – €40,000
Full Deep Retrofit	€50,000 – €90,000+
Enerphit Retrofit	€90,000+
Period Property Renovation	Varies widely – budget 15% contingency

NOTE: ALL FIGURES ARE INDICATIVE. FINAL COSTS DEPEND ON SPECIFICATION, SITE CONDITIONS, AND CONTRACTOR.

Building Smart: Your Next Step

Before committing to any home upgrade project in Dublin, take the time to get a proper consultation. Walk the site with a contractor. Talk through your goals, your budget, and your timeline. A good firm won’t pressure you; they’ll help you understand what’s realistic and what gives you the best return.

The difference between a project that runs smoothly and one that doesn’t usually come down to preparation, communication, and choosing the right team from the start.

Frequently Asked Questions

1. How long does a typical home renovation or extension take in Dublin?

There are different projects which take 6-16 weeks depending on their size and complexity. Larger or phased projects may take longer.

2. What SEAI grants are available for home energy upgrades in Dublin?

SEAI offers grants for insulation, heat pumps, windows, and full deep retrofits. Eligibility varies by measure and home type.

3. Do I need planning permission for a house extension in Dublin?

Not always. Most extensions are exempted by development regulations, although larger or some period properties might need complete planning consent.

4. What is a core and shell extension, and is it a cost-effective option?

The benefits of core and shell construction include a watertight shell no internal fit-out less initial investment and internal flexibility in the future.

5. How do I find a reliable building contractor in Dublin for renovations or retrofits?

Seek complete insurance, pertinent project experience, uncontaminated references and a well-organized procedure between initial consultation and final handover of the project.

How to Modernize a Period Home Without Losing Its Character

Period homes carry something that new builds simply cannot replicate. The high ceilings, the ornate cornicing, the thick stone walls, the bay windows that flood a room with golden afternoon light. These are the details that make people fall in love with older properties the moment they walk through the door.

But here is the truth: living in a period home can also be challenging. Draughts creep in through single-glazed windows. Heating bills climb year after year. Kitchens feel cramped. Bathrooms feel dated. The bones of the house are beautiful, but the practicality does not always match modern life.

The good news? You can have both. A home that is warm, functional, and contemporary, while still holding every bit of its original soul.

Why Period Homes Deserve a Thoughtful Approach

Not every renovation approach works on an older property. Strip out too much, and you lose the very character that made the house worth saving. Get the balance right, and you end up with something truly special.

Period homes in Dublin and across Ireland were built with craftsmanship that is rarely seen today. Victorian terraces. Edwardian semis. Georgian townhouses. Each has its own architectural language, and a skilled renovation team understands how to speak that language fluently.

The key is working with the structure, not against it.

Start With a Clear Vision Before You Touch Anything

Before a single wall comes down or a single tile goes up, sit with the house. Walk through it at different times of day. Notice where the light falls. Identify which original features matter most to you.

Ask yourself:

• Which original features must be preserved at all costs?
• Where are the biggest practical problems: insulation, heating or layout?
• What does the house need to function well for your family today?
• Are there any structural issues that need addressing first?

This is not just about aesthetics. A well-planned period property renovation will balance heritage with functionality in a way that feels natural rather than forced.

Preserve the Features That Make It Irreplaceable

Original Cornicing, Ceiling Roses, and Architraves

These details are what separate a period home from everything else on the market. Before any plastering or painting begins, ensure that your contractor has experience working around these elements.

Good restoration work includes:

• Carefully removing, numbering, and reinstating cornicing where walls need to be opened

• Repairing damaged sections with lime plaster rather than modern compounds, which can cause moisture problems in older walls

• Sourcing replacement pieces that match the original profile

Period Fireplaces and Chimney Breasts

Fireplaces are the heart of a period room. Even if you are adding underfloor heating or a heat pump, do not rip out an original fireplace surround. Restore it. Clean it. Make it a focal point again.

Many Victorian and Edwardian homes have fireplaces that were blocked up in the 1970s and 1980s. Opening these back up can transform a room instantly.

Original Timber Floors and Staircases

Solid timber floors underneath old carpet is one of the most satisfying discoveries in any period renovation. Sand them back, treat them properly, and they will outlast almost any alternative.

The same goes for original staircases. Replace the spindles if needed, but keep the newel post and the shape of the stair where possible.

Upgrade the Energy Performance Without Compromising the Walls

This is where many period renovations go wrong. The instinct is to wrap the outside of the house in insulation, which can alter the visual character dramatically. The smarter approach considers each wall, roof, and floor individually.

Internal Insulation Options

For solid stone or brick walls, internal wood fibre insulation is one of the most heritage-compatible options available. It is vapour-permeable, which means moisture can still move through the wall rather than getting trapped, reducing the risk of damp and condensation.

VS Builders specialises in exactly this kind of energy-efficient solution, working with materials that respect the original fabric of older Irish homes.

External Insulation: When and Where It Works

On some period homes, external wall insulation can be applied to rear elevations, side returns, or less visible faces of the building without affecting the streetscape. This is a practical way to dramatically reduce heat loss while keeping the front of the house intact.

Windows and Doors

Original timber sash windows are worth repairing before replacing. A well-maintained sash window, fitted with draught seals and secondary glazing, can perform surprisingly well thermally.

Where replacement is necessary, choose timber-framed double glazing that matches the original profile. The proportions matter. A poorly chosen replacement window can undermine an entire façade.

Deep Retrofits and SEAI Support

A deep retrofit can bring an older property from a low energy rating up to a B2 or better, significantly reducing heating costs. With SEAI grant funding available in Ireland, this is one of the smartest investments a period homeowner can make.

VS Builders has extensive experience delivering home deep retrofits across Dublin, guiding clients through the grant application process from start to finish.

Extend Thoughtfully to Add the Space You Need

Many period homes sit on generous plots, with rear gardens that offer real potential. A well-designed kitchen extension can transform the way a family uses their home, creating an open, light-filled space that connects indoors with outdoors.

Key Principles for Period-Sensitive Extensions

• Match materials where they meet. Use brick, stone, or render that complements rather than clashes with the original structure.

• Create a clear visual break. A glazed link between the original house and a new extension signals the transition clearly, rather than attempting to fake a seamless join.

• Prioritise natural light. Rooflights, full-height glazing, and south-facing orientations can flood even a modest extension with daylight.

• Consider the garden. The extension should not swallow the outdoor space completely. Retain enough garden to breathe.

VS Builders has delivered house extensions across Dublin, including core and shell projects where clients manage their own fit-out after the structural work is complete.

Modernise Kitchens and Bathrooms Without Going Generic

The most-used rooms in any home deserve investment, but they also need to feel right for the building they are in.

Kitchens

In a period home, a kitchen does not need to look like a showroom display. Consider:

• Shaker-style cabinetry in classic colours, paired with stone or timber worktops
• Period-appropriate fixtures: taps, handles, and sinks that nod to the era of the house
• Open shelving for a less fitted, more relaxed look
• Integrating appliances where possible to keep surfaces clean

Bathrooms

Roll-top baths, period-style radiators, and metro tiles are not just trends. In an older home, they feel genuinely appropriate. The key is quality over novelty.

Enerphit Retrofit Builder Dublin

Work With Builders Who Understand Older Homes

This point matters more than any other. A period property renovation is not the same as a standard refurbishment. It needs to know the old ways of construction, traditional materials, and to truly know what makes these buildings worth preserving.

VS Builders is based in Southside Dublin and has been working on Irish homes since 2010. Their team brings over 25 years of combined experience across renovations, extensions, and energy retrofits.

They work with homeowners from the first consultation through to final handover, helping to navigate planning permissions, material choices, and grant applications along the way.

If you are considering a renovation, getting the right team on board early makes a significant difference to the outcome.

Building Better While Keeping What Matters Most

Modernising a period home is not about erasing the past. It is about honouring it while making the house genuinely comfortable for the people who live there today.

When done well, a period property renovation adds value in every sense: financial, practical, and personal. The original features that drew you to the property in the first place become even more striking when they are set against modern finishes, warm rooms, and a layout that actually works.

Take the time to plan carefully. Choose materials that respect the original build. Work with contractors who have done this before. The result will be a home that feels both timeless and entirely liveable.

Frequently Asked Questions

Q1: Can I add external wall insulation to a period home without changing its appearance?

Yes, in many cases. Rear and side walls can be insulated without affecting the visible streetscape of your period property.

Q2: Do I need planning permission to extend a period home in Dublin?

It depends on the size and location of the extension. VS Builders guides clients through the full planning permission process from start to finish.

Q3: What is the best insulation for solid stone or brick walls?

Older walls are highly suggested to be lined with internal wood fibre insulation because it can let the moisture go through without creating damp issues.

Q4: How long does a typical period home renovation take?

Most renovations take between 6 and 16 weeks, depending on the scope of work and any structural challenges that arise during the project.

Q5: Are SEAI grants available for retrofitting a period property in Ireland?

Yes. Many period homes qualify for SEAI grant funding for insulation, windows and heating upgrades as part of a deep retrofit programme.

Step-by-Step Guide to Planning a House Retrofit in Dublin

Most homeowners in Dublin know their home could be warmer, cheaper to run, and better insulated. Yet the process of actually getting there feels overwhelming. Where do you begin? Who do you call? What does it even cost?

This guide breaks it all down, step by step, without the confusion.

What Is a House Retrofit and Why Does It Matter in Dublin?

A house retrofit is the process of upgrading your existing home to improve its energy efficiency, comfort, and long-term performance. This encompasses such improvements as insulation of external walls, replacement of windows and doors, extensive retrofit, and upgrading of heating systems.

In Dublin, older housing stock, particularly in areas like Stillorgan, Blackrock, Dundrum, and Castleknock, often struggles with heat loss, damp walls, and high energy bills. A well-planned home retrofit in Dublin addresses all of this while also increasing your property’s value.

The good news? The SEAI (Sustainable Energy Authority of Ireland) offers grants to help cover a significant portion of the cost.

Step 1: Understand What Your Home Actually Needs

Have a clear picture of the current state of your home before you spend a single euro.

Start With a Building Energy Rating (BER) Assessment

A registered assessor carries out a BER assessment and gives your home a rating from A (excellent) to G (very poor). This rating tells you:

• How much heat does your home lose
• Where the biggest inefficiencies are
• What upgrades will make the most impact

Most older Dublin homes sit between a D and F rating. After a full deep retrofit, many reach a B2 or higher.

Look for the Key Problem Areas

Walk through your home and note:

• Cold rooms that never seem to warm up
• Damp patches on external walls
• Draughty windows and doors
• High gas or electricity bills, though used normally.
• Condensation on windows during winter

These are indications where energy is escaping.

Step 2: Set a Realistic Budget and Explore SEAI Grants

It is impossible to plan a journey without reading the map and budgeting without knowledge of available grants. In Ireland, the SEAI provides a lot of assistance in the form of its One Stop Shop service and individual grants.

What Grants Are Available?

Here is a quick overview of common SEAI grant categories:

• Attic insulation grants
• Wall insulation grants (internal and external)
• Window and door upgrades
• Heat pump installation
• Solar PV panels
• Deep retrofit grants for whole-home upgrades

The grant amounts vary depending on the measure and your home type. For some homeowners, grants cover a significant percentage of the total project cost.

What Does a Retrofit Cost in Dublin?

Costs depend heavily on the scope of work. A basic external wall insulation project differs enormously from a full Enerphit retrofit or a complete deep retrofit with new heating systems.
Working with an experienced contractor like VS Builders means you get an accurate, itemised quote before any work begins, so there are no surprises mid-project.

Step 3: Choose the Right Type of Retrofit for Your Home

Not every home needs the same solution. It envelops the exterior of the building with a coating of insulating material, significantly decreasing the amount of heat loss through the walls.

Deep Retrofit

A deep retrofit is a comprehensive upgrade that typically targets multiple elements of the home at once: insulation, airtightness, ventilation, windows, and heating. This is the most thorough route and delivers the highest energy savings.

VS Builders specialises in home deep retrofits across Dublin, including SEAI-compliant projects that help homeowners achieve a B2 energy rating or better.

External Wall Insulation (EWI)

External wall insulation is one of the most effective single measures you can take. It coats the outer of the building with a blanket of insulating material which significantly resists heat loss through the walls.

This is particularly popular in coastal South Dublin areas, where older cavity walls or solid walls lose heat rapidly.

Enerphit Retrofit

The Enerphit standard is the Passivhaus Institute’s retrofit certification. It represents the highest level of energy performance achievable in an existing building. While more demanding in terms of specification, it produces a home that is exceptionally comfortable and cheap to run year-round.

Period Property Renovation

Older Dublin homes, especially those built before 1960, need a more careful approach. Period property renovation involves retrofitting while preserving the character, structure, and materials of the original building. This requires a contractor with specific experience in heritage-sensitive construction.

Step 4: Select a Qualified and Experienced Contractor

This step matters more than most people realise. A bad retrofit will lead to moisture and ventilation issues, and can even lead to loss of eligibility for your SEAI grant.

What to Look for in a Retrofit Contractor

• SEAI registration for grant-eligible works
• Proven experience with similar property types
• Clear, itemised quotes with no hidden costs
• Portfolio of completed projects in Dublin
• Full insurance and certification

VS Builders ticks all of these boxes. Based in Stillorgan with over a decade of experience, their team has completed retrofit and renovation projects across Dublin, including full deep retrofits, kitchen extensions, and period property renovations in areas like Dundrum, Castleknock, and Blackrock.

Ask the Right Questions

Before signing anything, ask your contractor:

1. Are you SEAI-registered?
2. Who manages the project day to day?
3. What is there and what is not there in the quote?
4. How will you handle planning permission if required?
5. What are the warranties that you offer on the finished works?

Step 5: Plan the Work and Understand the Timeline

Once your contractor is confirmed and your budget is clear, it is time to plan the actual build programme.

Typical Retrofit Timelines

Based on real project data from completed Dublin retrofits:

• Basic retrofit measures (insulation, windows): 4 to 8 weeks
• Silver-level deep retrofit: approximately 8 to 10 weeks
• Gold-level deep retrofit: approximately 10 to 12 weeks
• Diamond-level with extension: approximately 14 to 18 weeks

These timelines are estimates. Planning delays, weather, and material availability can all affect the schedule. A proper contractor will bring these risks into the limelight.

Do You Need to Move Out?

For most Dublin retrofit projects, homeowners do not need to vacate the property. During such periods as floor insulation or a bathroom refit, minor disruption is anticipated but most clients do not leave their homes.

Step 6: Monitor Quality and Complete the Handover

Once works are underway, do not simply disappear and wait for a phone call. The project is on track through regular site visits, updates and communication.

What a Good Handover Includes

• Final walkthrough with the project manager
• Certificates and documentation for SEAI grants
• BER certificate showing the new energy rating
• Warranty details for all materials and installations
• Aftercare contact for any post-completion queries

VS Builders conducts a thorough final review before every project handover, ensuring every element meets agreed standards before the client signs off.

House Deep Retrofit Dublin

The Key Services That Support a Full Retrofit

A whole home retrofit in Dublin can be a combination of multiple related services:

• External wood fibre insulation for breathable, heritage-appropriate walls
• Internal wood fibre insulation where external works are not feasible
• Windows and doors installation to eliminate draughts and improve airtightness
• Sound insulation for homes in busy or urban areas
• Kitchen extensions to expand usable space alongside energy upgrades

Bundling these works into a single project reduces cost, disruption, and time on site.

Your Dublin Home Deserves a Smarter Future

Another most viable and viable investment that a homeowner can make is a house retrofit in Dublin. It saves on energy, makes living more comfortably, adds value to your property and lowers your ecological footprint. Done right, it transforms how your home feels to live in, every single day.

The process does not need to be complicated. With the right plan, the right contractor, and a clear understanding of your options, from deep retrofits to external wall insulation and beyond, the path from cold, inefficient home to warm, energy-rated property is entirely achievable.

VS Builders has been delivering exactly this for Dublin homeowners since 2010. Their group does all the consultation to the last handover and all the SEAI-compliant, transparent pricing and a combined experience of more than 25 years behind each project. Ready to take the first step? Get in touch with VS Builders for a free site consultation and tailored quote.

Frequently Asked Questions

Q1: What is the average cost of a house retrofit in Dublin?

Costs vary by scope, but grants from SEAI can significantly reduce your total spend on eligible retrofit measures.

Q2: Do I need planning permission for a home retrofit in Dublin?

Retrofit works do not generally need planning permission, although extensions and major external alterations might.

Q3: How long does a full deep retrofit take in Dublin?

A full deep retrofit typically takes between 8 and 18 weeks, depending on project size, specification, and site conditions.

Q4: Can I stay in my home during a retrofit in Dublin?

Yes, the majority of homeowners stay in their houses during work with only slight temporary inconveniences in certain stages.

Q5: What SEAI grants are available for retrofitting a Dublin home?

SEAI offers grants for insulation, windows, heat pumps, solar panels, and full deep retrofits through their One Stop Shop programme.

Choosing the Right Building Contractor in Dublin: A Homeowner’s Guide

Finding a reliable building contractor in Dublin is not as simple as picking the first name that shows up online. Anyone who has been through a renovation will tell you that. The market is busy, the promises sound great, and the actual results? They vary more than you’d expect.

This guide gives you a clear, no-nonsense path to making the right call for your home.

Why Choosing the Right Contractor Actually Matters

A poor choice does not just hit your wallet. It eats into your time, your peace of mind, and sometimes causes structural damage that lingers for years.

Dublin’s housing stock is genuinely varied. Victorian terraces in Rathmines. Semi-detached homes out in Knocklyon. Period properties dotted across the Southside. Each one has its own quirks, its own demands, and its own set of challenges that only someone with real local experience will spot before they become problems.

The right building contractor in Dublin brings more than a crew and equipment. They bring accountability, practical knowledge, and the kind of calm, experienced problem-solving that only comes from years on actual Irish sites.

What to Look for in a Dublin Building Contractor

1. Verifiable Experience and a Real Portfolio

Experience is not just a selling point. It is evidence. Before hiring anyone, ask to see finished projects that are similar in scale and type to yours. A contractor worth their salt will have a proper portfolio, real photographs, real locations, and clients willing to vouch for them.

VS Builders has been working across Dublin since 2010, with a team that carries over 25 years of combined experience between them. Projects completed in Dundrum, Castleknock, Knocklyon and Blackrock. That spread matters because Dublin neighbourhoods differ quite a lot in terms of build type and planning requirements.

2. Proper Insurance and Certification

Non-negotiable, full stop. Every legitimate building contractor in Dublin must carry full insurance and hold the relevant certifications. Without it, an accident on your property lands squarely on you.

Always confirm the following:

• Public liability insurance
• Employer’s liability cover
• Trade qualifications and applicable certifications
• Full compliance with Irish building regulations

3. Transparent Quotes and Honest Timelines

Vague quotes are a warning sign. A contractor who is serious about their work provides a detailed, written quote that itemises materials, labour, and realistic timeframes. Rough estimates with no paper trail tend to cause disputes once work is underway.

Rough renovation timelines across Dublin projects:

• Small upgrades and bathroom refits: 3 to 6 weeks
• Kitchen extensions: 8 to 14 weeks
• Full house deep retrofits: 8 to 18 weeks, depending on scope
• Complete renovations: 6 to 16 weeks

These are ballpark ranges, not guarantees. But a contractor who cannot produce a reasonable estimate upfront is simply not organised enough to manage your project well.

Understanding the Types of Building Work in Dublin

Not all construction is the same thing. Not every contractor handles every type of work, either. Knowing what your project actually requires puts you in a much stronger position when comparing your options.

Home Renovations

Home renovations can mean anything from freshening up a dated kitchen to completely rethinking a home’s entire layout. The best renovation contractors do not just build what you describe. They ask questions first. What does the space actually get used for? What will the family need in a few years? What is the existing structure capable of supporting?

That is how VS Builders approaches every job. Big or small, the conversation always starts with the homeowner’s lifestyle, not a set of generic drawings.

House Extensions

A house extension adds real, usable space. Done properly, it adds value and dramatically improves daily life. Done badly, it creates planning complications and structural headaches that can take years to sort.

Common extension types across Dublin:

• Single-storey rear extensions for bigger kitchens or open-plan layouts
• Two-storey side extensions adding bedrooms and bathrooms
• Kitchen extensions that pull in natural light and open up garden connections
• Core and shell extensions providing a weather-tight structure for phased completion

Each type demands a contractor who understands Dublin’s planning rules and the specific challenges of connecting new builds to older Irish homes. That combination of skills is rarer than it should be.

Energy Retrofits and Insulation

This is one of the fastest-growing areas in Irish residential construction right now. With energy costs climbing and SEAI grant funding available, a growing number of Dublin homeowners are choosing deep energy retrofits as a way to cut bills and genuinely improve how comfortable their home feels day to day.

VS Builders works across:

• House deep retrofits (fully SEAI-backed and compliant)
• External wall insulation
• External and internal wood fibre insulation
• Windows and doors installation
• Enerphit retrofits for high-performance energy standards
• Sound insulation

These are technical disciplines. Certified installers, not just general tradespeople, are what the work requires. The type of insulation, its thickness, and how it is applied all effect both performance outcomes and grant eligibility.

Planning Permission: Who Handles It?

A lot of homeowners find the planning process genuinely stressful. The forms, the submissions, the back-and-forth waiting. A capable building contractor in Dublin takes the bulk of that burden away from you.

VS Builders supports clients through planning applications, permissions, and the relevant building regulations as a standard part of their service. This is especially valuable for extensions and retrofits requiring approval from Dublin City Council or Dún Laoghaire-Rathdown County Council, which varies depending on your precise location.

A quick checklist before starting any project:

• Does your project sit within permitted development rights?
• Will the extension affect neighbouring properties or local sight lines?
• Are there conservation area restrictions on your road or estate?
• Is your home classified as a period or protected structure?

Getting clarity on these questions early saves a significant amount of time and money further down the line.

What a Professional Build Actually Looks Like

A well-managed project follows a clear, consistent structure. That is what that would look like in reality:

1. Initial consultation – Understanding your goals, budget, and daily lifestyle
2. Design and planning – Sketches, specifications, and any regulatory applications necessary.
3. Detailed quote – Pricing in items and a guaranteed schedule.
4. Construction – Application on the site with regular updates to the client.
5. Final review and handover – Snagging, extensive quality inspections and formal sign-off.
6. Post-project support – Any follow-up regarding anything that arises after the completion.

VS Builders runs every project through this process. Fewer surprises, clearer communication, and results that actually match what was originally discussed.

Why Local Knowledge Is Worth More Than People Realise

Dublin is not a generic building environment. Soil conditions vary. Older drainage systems behave differently. Victorian foundations need specific approaches. Local planning sensitivities can catch out contractors who are used to working elsewhere.

VS Builders is based in Stillorgan and has built up deep experience across Southside Dublin, covering Blackrock, Dundrum, Castleknock, and Knocklyon, among others. That familiarity feeds directly into better project planning, stronger relationships with local suppliers, and fewer costly delays on site.

Period Property Renovation Dublin

Getting Real Value Without Cutting Corners

Budget is real. Nobody pretends otherwise. But the cheapest quote on the table rarely produces the best outcome. The true cost of a renovation covers the quality of materials used, the reliability of the finished work, and how long it all holds up over time.

Practical tips for getting genuine value:

• Collect at least three quotes and compare them line by line, not just on total price
• Ask exactly what materials are specified and what grade they are
• Check whether SEAI grants apply to your project, particularly for retrofit work
• Favour contractors who use premium, sustainable materials as standard
• Include post-project warranty and support in your overall assessment

VS Builders uses high-quality materials throughout and places particular emphasis on eco-friendly, energy-efficient solutions that reduce running costs over time.

Your Home Deserves a Contractor Who Gets It Right the First Time

A renovation is one of the largest investments a homeowner makes. The contractor you choose shapes not just the finished result but the entire experience of getting there. Delays, poor finishes, and a lack of communication are all avoidable when you work with a team that takes both precision and transparency seriously.

VS Builders brings over 25 years of combined expertise to every project across Dublin, from energy retrofits to full home extensions. They hear right, think through, and provide workmanship that stands the test of time. When a job is properly done, it actually reflects in all aspects of your home.

Frequently Asked Questions

Q1: How do I verify that a building contractor in Dublin is legitimate?

Check their insurance, certifications, registered address, completed portfolio, and client references before signing anything.

Q2: Do building contractors in Dublin handle planning permission?

Yes. Qualified construction firms such as VS Builders assist homeowners in planning applications and full compliance with building regulations.

Q3: How long does a typical house extension take in Dublin?

The size, type and size of the extension are the most significant as they dictate the time interval between 8-16 weeks.

Q4: Is it possible to remain in my house during a renovation or extension project?

In most cases, yes. Clients usually stay at home, relocating to an unused room at certain stages, like flooring or the bathroom.

Q5: Are energy-retrofit projects eligible for SEAI grants in Dublin?

Yes. SEAI can be funded for deep retrofits and insulation upgrades when completed by certified, fully compliant contractors.

Top Trends in Modern House Extensions Across Dublin

Dublin homes are changing. Not just cosmetically, but structurally, functionally, and quite boldly. More homeowners are choosing to extend rather than relocate, and the results across the city have been genuinely impressive.

Whether it is a rear kitchen extension in Knocklyon or a two-storey build in Castleknock, the appetite for smart, well-designed house extensions in Dublin has never been stronger. And it is not hard to see why.

Moving is expensive. Stamp duty, legal fees, removals, and the sheer disruption of uprooting a family all add up quickly. Extending your existing home? That delivers more space, more value, and far less stress, when done correctly.

Here is a look at the trends shaping modern house extensions across Dublin right now.

Open-Plan Extensions Are Still Leading the Way

This one has staying power. The open-plan rear extension remains the most requested project type across Dublin’s residential streets, and it continues to evolve.

Homeowners are knocking through walls between kitchens and living areas, pushing out towards the garden, and flooding the space with natural light through large glazed panels or rooflights. The result is a kitchen-dining-living area that feels connected, generous, and far more liveable than the original layout ever allowed.

What Makes a Good Open-Plan Extension Work?

• A clear structural plan before anything gets knocked through
• Underfloor heating integrated from the start, not retrofitted later
• Bifold or sliding doors that open the space to the garden in warmer months
• Zone lighting to make one large room feel like several distinct spaces

The key is cohesion. The extension should feel like it was always there, not like it was added later.

Energy Efficiency Is No Longer Optional, It Is Expected

A few years ago, insulation and retrofit upgrades were seen as a bonus. Today, they are built into the brief from day one. Dublin homeowners, particularly those pursuing deep retrofit projects, are combining extensions with full energy upgrades in a single project.

This approach makes financial sense. The disruption happens once. The scaffolding goes up once. The build team is on site once. External wall insulation, new windows and mechanical ventilation wrapped into an extension project will keep two or three years in the future unnecessary a revisit of those problems.

Energy Features Being Integrated into Extensions Right Now

• External wall insulation (EWI) applied during the build phase
• Triple-glazed windows and doors that reduce heat loss significantly
• Air-source heat pumps replacing older gas boilers
• MVHR systems (Mechanical Ventilation with Heat Recovery) for clean, fresh air without heat loss
• Solar PV panels added to flat or pitched extension roofs

VS Builders has been at the forefront of combining these energy measures with extension builds, helping Dublin homeowners achieve better BER ratings alongside more living space.

Kitchen Extensions Are Getting Bigger and Brighter

The kitchen has reclaimed its position as the heart of the home. It is where breakfast happens, homework gets done, and guests gather on a Friday evening. Dublin homeowners know this, and they are investing accordingly.

Kitchen extensions in Dublin are trending towards generous proportions with high ceilings, large format tiles, and a seamless connection between cooking and outdoor living. A well-executed kitchen extension does not just add square footage. It transforms the daily rhythm of a household.

Key Features in Demand for Kitchen Extensions

• Large rooflights to draw in daylight from above
• Lantern roofs as a design focal point
• Island units that create both prep space and social space
• Concealed storage to keep the space clean and uncluttered
• Utility rooms positioned to handle the practical side of family life

Projects like the Bramley Cres, Castleknock kitchen extension completed by VS Builders show exactly what is achievable when planning, design, and execution align.

Two-Storey Extensions Are Gaining Serious Ground

Single-storey rear extensions have long been the default choice. But across Dublin, more homeowners are opting for two-storey builds, particularly in established suburban areas where plot sizes are fixed and the only way to grow is upward.

A two-storey extension typically adds a bedroom and bathroom above a kitchen or living room extension, delivering a significant uplift in both usable space and property value.

Why Two-Storey Extensions Make Sense in Dublin

• Maximise the footprint of an existing single-storey lean-to or garage
• Add a master bedroom with en suite without sacrificing garden space
• More cost-effective per square metre than two separate projects
• Greater impact on property valuation, particularly in south Dublin

The planning process for two-storey extensions is more involved, but a builder with local knowledge can navigate that effectively. VS Builders has completed multi-level extension projects across Dublin, including the Idrone Close, Knocklyon project, which demonstrated exactly this approach.

Period Properties Are Being Extended with Care

Dublin is full of Victorian terraces, Edwardian semis, and mid-century bungalows. Extending these properties requires a different mindset. It is not just about adding space. It is about respecting what is already there.

Period property renovations and extensions are trending towards contrast, rather than imitation. A clean, contemporary rear extension on a Victorian terrace can look extraordinary precisely because it does not pretend to be something it is not. The old and the new coexist clearly and confidently.

What to Consider with a Period Property Extension

• Planning restrictions may apply, especially in conservation areas
• Matching or contrasting materials is a deliberate design choice, not an afterthought
• Structural surveys are essential before any work begins
• Internal layout changes often need careful handling to preserve original features
• Timber frames and lime mortars may be required in protected structures

VS Builders works with homeowners on period properties across south Dublin, ensuring extensions are sympathetic in context but genuinely modern in execution.

Core and Shell Extensions Are Changing How People Budget

Not every homeowner wants a fully finished extension delivered all at once. Core and shell extensions are a growing trend, particularly among buyers who want to control fit-out costs over time.

The idea is straightforward. The structural shell, roof, and weatherproofing are completed to a high standard. The interior finishing, floors, kitchen fit out and decoration follow subsequently in stages that are affordable to the homeowner and within his or her schedule.

Core and Shell Benefits at a Glance

• Lower initial cost with room to phase the investment
• Structural integrity from the start, regardless of fit-out timing
• Flexibility to choose finishes without being rushed
• Ideal for homeowners who wish to self-manage a few interior fit-out

House Retrofit Cost Dublin

Smart Design Is Replacing Square Footage as the Priority

Bigger is not always better. Some of the most impressive home extensions in Dublin are relatively modest in size but extraordinary in how they function. Clever spatial planning, good light, and thoughtful storage can make a 20-square-metre extension feel twice that size.

Dublin homeowners are increasingly asking builders not just for more room, but for better room. That distinction matters enormously when it comes to livability.

Smart Design Features Worth Considering

• Built-in joinery that uses every centimetre efficiently
• Mezzanine areas in double-height spaces
• Split-level layouts that define zones without using walls
• Natural materials that add warmth without visual noise
• Acoustic considerations in open-plan spaces shared by multiple family members

Why VS Builders Is a Trusted Choice for House Extensions in Dublin

VS Builders brings over 25 years of combined experience to residential extension and renovation projects across Dublin. The team is based in Stillorgan and undertakes all the initial consultation to final handover including assisting with planning, upgrading energy and building structures.

Their approach focuses on precision, sustainability, and genuine client communication throughout the process. Every project is different, and that distinction is treated seriously rather than handled with a one-size-fits-all template.

If an extension is on the horizon, the first step is a site visit and a clear conversation about what is achievable within the space, the budget, and the planning framework.

Ready to Extend? Make Your Dublin Home Work Harder

Your home has more potential than its current layout suggests. Whether a rear kitchen extension, a two-storey build, or an energy-efficient retrofit is on your mind, the right team makes all the difference.

Modern house extensions in Dublin are not just about extra space. They are regarding improved living, reduced energy expenses, and value. VS Builders takes with them the experience, the local knowledge and the truthfulness that any project is worth.

Make the first move and schedule a free site consultation to make that vision worth coming home to.

Frequently Asked Questions

Do I need planning permission for a house extension in Dublin?

Most single-storey extensions fall under exempted development, but two-storey builds typically require formal planning permission from the local authority.

How long does a house extension typically take to complete?

Depending on the scale, most extensions take between eight and sixteen weeks from start to handover, excluding the planning stage.

Can I combine a house extension with an energy retrofit?

Absolutely. Combining both in one project reduces disruption and is often more cost-effective than completing them separately at different times.

What is the average cost of a house extension in Dublin?

Costs vary widely based on size and specification, but homeowners should generally budget from EUR 1,800 to EUR 3,000 per square metre for a quality build.

Will a house extension add value to my Dublin property?

Properly completed, well-designed extensions can bring a lot of value, which is usually compensated by the construction cost in a region where there is a good property demand.

Kitchen Extension Cost in Dublin: What Homeowners Should Expect

If you own a home in Dublin and you are tired of a cramped, dark kitchen that no longer fits your family’s life, you are not alone. Thousands of homeowners across Blackrock, Dún Laoghaire, Monkstown, Stillorgan, and Booterstown are asking the same question right now: what will a kitchen extension actually cost me — and is it worth it?

This guide gives everything you need to make a confident decision.

Why Dublin Homeowners Are Extending Their Kitchens in 2025

The kitchen has become the true living room of the modern Irish home. Open-plan spaces combining cooking, dining, and family time are not a luxury anymore — they are the expectation. Yet most older Dublin homes, especially Victorian terraces and 1960s semis around the southside, were simply not designed for this lifestyle.

The result is a kitchen that feels pinched the moment you add a family, a table, and a wish for natural light. A well-planned rear or wraparound extension solves all three problems at once — and adds real, measurable value to your property.

Key reasons homeowners extend: More natural light via skylights and wide glazed doors; an open family space for cooking, homework, and hosting; improved indoor-outdoor flow onto the garden; and a meaningful boost to resale value that estate agents consistently confirm in post-2021 Dublin.

How Much Does a Kitchen Extension Cost in Dublin?

This is the question everyone asks first, and it deserves a clear answer. Based on real projects completed by VS Builders between December 2023 and April 2025, here is what Dublin homeowners are currently paying:

Extension Size	Package Price (Incl. VAT)	Typical Timeline	What’s Included
20 m²	€47,000	5–6 weeks on site	Foundations, insulated slab, ICF walls, warm roof, roof-light, sliding door, 2 radiators, 20 electrical points
40 m²	€122,000	7–8 weeks on site	All of the above + structural steel, kitchen budget, laminate flooring, painting, USB sockets, pendant light

For context, current market rates across Dublin sit at approximately €2,000–€2,800 per square metre for a builders-finish extension. The packages above include the roof-light, aluminium sliding doors, and full engineer certifications — items that are often charged as extras elsewhere.

Important: These figures are benchmarks based on recently delivered projects and should be used as a planning guide. Your exact quote will depend on site conditions, finish choices, and any structural requirements specific to your home.

What Exactly Do You Get? A Closer Look at the Packages

20 m² Single-Storey Rear Extension — €47,000

This is the entry-level package, and it is anything but basic. It delivers a watertight, fully compliant, warm and energy-efficient shell ready for your kitchen fit-out.

• Foundations, 150 mm insulated slab, and radon barrier
• External ICF walls built to U-value 0.18 W/m²K — ahead of 2025 building regulations
• Warm-roof fibreglass finish at U-value 0.20 W/m²K with a 2000×1000 mm double-glazed aluminium roof-light
• 3000×2100 mm modern aluminium slim sliding door opening onto your garden
• Two radiators connected to your existing heating system, plus 20 electrical points
• Full airtight membrane and taping throughout

40 m² Single-Storey Extension — €122,000

For families who want the full transformation — the ‘wow factor’ open-plan space — this package covers everything from foundations to finishing touches.

• Everything in the 20 m² package, scaled up
• 4000×2400 mm slim aluminium sliding door for maximum garden connection
• Three radiators, 30 electrical points, 4 USB double sockets, and a pendant light
• Structural steel and engineer-certified budget included
• Site-passage concrete, kitchen budget, laminate flooring, and full painting included

Do You Need Planning Permission for a Kitchen Extension in Dublin?

This is one of the most common concerns, and the good news is that most Dublin homeowners do not need planning permission for a standard rear extension.

Scenario	Planning Permission Required?
Rear extension up to 40 m² (house not previously extended)	No — exempt under national regulations
Extension keeping height ≤ 4 m (flat) or ≤ 6 m (pitched ridge)	No — exempt
Heritage façade or sensitive streetscape property	Yes — permission required
Combined total of all extensions exceeds 40 m²	Yes — permission required

VS Builders handles all planning applications and building control compliance on your behalf, so you do not need to navigate the paperwork alone.

What Drives the Cost Up — or Down?

Not every extension costs the same, and it helps to understand what moves the dial:

• Glazing specification: Slim-frame aluminium sliders add approximately 30% over standard PVC doors, but they are the defining feature of a high-spec extension.
• Roof form: A flat warm roof is more economical; a pitched or glazed roof adds cost but delivers exceptional light.
• Site access: Tight urban lanes in Blackrock or Monkstown require extra scaffolding and waste logistics, which can add to overall costs.
• Finish level: Standard laminate floors and painted walls keep costs manageable; bespoke tiling or underfloor heating adds to the budget.
• Structural complexity: Removing load-bearing walls or spanning large openings requires structural steel and certified engineering — both included in the 40 m² package.

Kitchen Extension Cost Dublin

Can You Claim SEAI Grants on a Kitchen Extension?

Yes — and this is an often-overlooked saving. If you upgrade insulation on adjoining walls or improve your attic insulation at the same time as your extension, you may be eligible for SEAI (Sustainable Energy Authority of Ireland) grants.

VS Builders will identify every grant you qualify for before your first invoice. In some cases this can represent a meaningful reduction in your net project cost. We will survey, cost, and show you exactly how much grant money you can bank — all as part of a free 30-minute site consultation.

Energy Performance: Built to 2025 Standards and Beyond

Our extension is not just a space — it is a warm, efficient, future-proofed room. Every project is designed to meet or exceed current Irish building regulations:

• External walls: U-value 0.18 W/m²K (regulations require ≤ 0.21 W/m²K)
• Warm roof: U-value 0.20 W/m²K (regulations require 0.16–0.20 W/m²K)
• Airtight membrane and taping throughout to minimise heat loss
• Triple-glazed window upgrades available — reducing heat loss by approximately 30% versus double glazing

This level of insulation also means your existing heating system works less hard, and any future heat-pump installation will perform at its best.

What Is Excluded from the Package Price?

We are upfront about what the packages do not cover so you can budget accurately:

• Professional fees: architect, engineer, and BER assessor fees are not included
• Planning application levies (if applicable)
• Roof or attic works on the existing house (outside the extension footprint)
• Bespoke or premium finishes beyond the standard specification

If your scope changes after agreement, a re-quote is issued transparently before any additional work proceeds.

How Long Will Your Kitchen Extension Take?

We work within tight, predictable timelines — all within a single season so you avoid winter snagging and disruption:

Project Scale	Approximate Site Duration
20 m² kitchen extension	5–6 weeks on site
40 m² kitchen/living extension	7–8 weeks on site
Silver retrofit package	8–10 weeks
Gold retrofit package	10–12 weeks
Diamond package (with extension)	14–18 weeks

Note: Durations are approximate and drawn from recently completed projects. Factors such as planning delays, weather, or concealed structural issues can affect actual on-site time.
Most clients remain living in the home during works — approximately 90% of occupants stay on site throughout, moving to a spare room during any floor or heating work.

Ready to Add Space, Light, and Value to Your Home?

Call us on 087 715 5334, drop us an email at info@vsbuilders.ie, or fill out the contact form on our website to set up a free 30-minute site visit.

FAQs

How much does a kitchen extension cost per square metre in Dublin?

Current rates sit at approximately €2,000–€2,800 per m² for a builders-finish extension, with our fixed-scope packages starting at €47,000 for 20 m² (incl. VAT).

Do I need planning permission for a rear kitchen extension in Dublin?

In most cases no — extensions up to 40 m² at ground level are exempt under national regulations, provided the house has not been previously extended and height limits are respected.

How long does a kitchen extension take to build?

A 20 m² rear extension typically takes 5–6 weeks on site; a 40 m² open-plan extension takes 7–8 weeks — both completed within a single season.

Can I get a grant to help pay for a kitchen extension in Dublin?

Yes — SEAI grants are available if you upgrade insulation on adjoining walls or the attic at the same time; we identify every grant you qualify for before work begins.

Do you handle planning and compliance on my behalf?

Yes — we manage all planning applications, building control submissions, and engineer certifications from start to finish so you do not have to.

Sound Insulation Solutions for Quieter Homes

In today’s busy world, noise has become one of the biggest hidden stress factors in our homes. Whether it’s traffic outside, noisy neighbours, household activity, or echoing rooms, unwanted sound can seriously affect comfort, sleep quality, concentration, and overall wellbeing. That’s why more homeowners are now actively looking for professional sound insulation Dublin solutions to create quieter, more peaceful living environments.

Sound insulation is no longer just for recording studios or apartments. It is now a core part of modern home improvement, helping families enjoy their homes without constant disturbance. This guide provides an A–Z overview of sound insulation, explaining how it works, where it helps most, and what solutions are available.

Why Sound Insulation Matters in Modern Homes

Noise pollution doesn’t just cause irritation — long-term exposure can lead to poor sleep, increased stress, reduced productivity, and lower quality of life. Homes in urban and suburban areas are particularly affected by:

Road and traffic noise
Neighbouring properties
Home entertainment systems
Plumbing and mechanical sounds
Footsteps and impact noise between floors

Sound insulation reduces the transmission of these noises, allowing rooms to feel calmer, more private, and more comfortable.

Understanding How Sound Travels

To choose the right solution, it helps to understand how sound behaves:

Airborne noise – voices, music, televisions, traffic
Impact noise– footsteps, dropped objects, furniture movement

Effective sound insulation uses specialised materials and construction techniques to block, absorb, or dampen these sound waves before they travel through walls, floors, and ceilings.

Key Areas Where Sound Insulation Is Most Effective

1. Walls

Internal and party walls are major sound pathways. Insulating walls can dramatically reduce noise between rooms or neighbouring properties. This is especially beneficial for bedrooms, home offices, nurseries, and semi-detached or terraced houses.

2. Ceilings and Floors

Footsteps and movement from above are common complaints. Floor and ceiling soundproofing systems can minimise impact noise and improve privacy between levels of the home.

3. Doors and Windows

Even well-insulated walls lose effectiveness if doors and windows leak sound. Acoustic glazing, solid core doors, and proper sealing play an important supporting role.

4. Home Studios and Media Rooms

Purpose-designed sound insulation creates controlled acoustic environments for music rooms, gaming setups, and home cinemas.

Benefits Beyond Noise Reduction

Installing sound insulation doesn’t only make homes quieter. It also:

Improves privacy between rooms and neighbours
Enhances property value
Increases comfort and usability of living spaces
Supports better sleep and mental wellbeing
Complements energy-efficient upgrades

For homeowners planning broader improvements, sound insulation fits naturally into any home renovation Dublin project. It is often installed alongside extensions, attic conversions, flooring upgrades, or internal refurbishments to deliver a more complete transformation.

When Is the Best Time to Install Sound Insulation?

While soundproofing can be retrofitted, the most cost-effective time is during renovation or remodelling work. Walls and floors are already being accessed, which reduces labour, disruption, and long-term cost. However, targeted upgrades can also be carried out in specific rooms without major structural work.

Choosing the Right Sound Insulation Approach

Every home and noise issue is different. The best results come from:

Identifying noise sources
Assessing building structure
Selecting purpose-designed systems
Using professional installation methods

A tailored approach ensures materials work together effectively rather than simply adding thickness without proper performance.

Creating a Quieter, Healthier Home

A quiet home supports rest, productivity, family life, and mental wellbeing. With modern sound insulation systems, homeowners no longer have to accept constant noise as part of daily living. Whether your goal is peaceful bedrooms, focused workspaces, or improved neighbour separation, sound insulation offers a long-term solution that transforms how a home feels and functions.

Frequently Asked Questions

Q1. Does sound insulation completely block all noise?

Sound insulation significantly reduces noise but does not usually eliminate it 100%. The goal is to lower sound levels to a point where they are no longer disruptive, creating a much quieter and more comfortable environment.

Q2. Which rooms benefit most from sound insulation?

Bedrooms, home offices, nurseries, living rooms, and rooms with shared walls or floors benefit most. Media rooms and attic conversions are also ideal candidates.

Q3. Can sound insulation be added without major building work?

Yes. Many modern systems can be installed on existing walls, ceilings, and floors with minimal disruption, depending on the level of sound reduction required.

Q4. Is sound insulation worth the investment?

Absolutely. It improves daily comfort, supports better health, enhances privacy, and increases overall home appeal and value, making it one of the most practical long-term home upgrades.

Kitchen Extension Trends in Blackrock for Modern Homes

Blackrock has become one of Dublin’s most desirable locations for modern home upgrades, and kitchen extensions are leading the way. With a blend of coastal charm, period properties, and contemporary family homes, the area is perfectly suited to stylish, light-filled kitchen transformations. Today’s homeowners are no longer looking for just extra space they want smarter layouts, better flow, energy efficiency, and kitchens that truly support modern living.

As more families explore kitchen extensions Dublin options, Blackrock stands out as a hub of innovation, where design trends focus on comfort, connection to the outdoors, and long-term property value. Below is a complete guide to the most popular kitchen extension trends shaping modern homes in Blackrock.

Open-Plan Kitchens with Lifestyle-Focused Design

Open-plan living continues to dominate kitchen extension projects, but with a more thoughtful approach. Instead of one large empty space, homeowners now prefer layouts that subtly define different zones for cooking, dining, relaxing, and working.

This is achieved through kitchen islands, ceiling features, lighting design, and sliding glass partitions. These elements maintain openness while offering privacy and noise control when needed. The result is a space that feels both expansive and practical ideal for busy households and social gatherings alike.

Maximising Natural Light and Outdoor Connection

One of the most noticeable trends in Blackrock is the strong emphasis on natural light. Kitchen extensions increasingly feature large glazed panels, skylights, and roof lanterns to brighten interiors and reduce reliance on artificial lighting.

Bi-fold and sliding doors are especially popular, opening kitchens directly onto gardens or patios. This design not only enhances everyday living but also creates a seamless indoor outdoor flow that works beautifully during warmer months. Homes feel larger, brighter, and more connected to nature.

Contemporary Materials and Timeless Finishes

Modern kitchen extensions are defined by clean lines and carefully chosen materials. Blackrock homeowners are favouring combinations that feel luxurious yet understated, such as:

Quartz or porcelain worktops
Handle-less cabinetry
Natural wood textures
Matte black or brushed brass fixtures

Neutral palettes remain popular, with personality added through lighting features, splashbacks, and bespoke storage solutions. This approach ensures the kitchen stays stylish for years rather than following short-lived trends.

Smart Kitchens for Modern Living

Technology has become a core part of kitchen design. Many modern extensions now incorporate smart appliances, energy-efficient systems, and integrated lighting controls. Features such as boiling-water taps, concealed charging stations, and app-controlled heating add both comfort and convenience.

These upgrades don’t just enhance lifestyle they also improve the long-term performance and desirability of the home.

Family-Friendly and Functional Layouts

Kitchen extensions in Blackrock are increasingly designed around real family needs. This includes walk-in pantries, utility spaces, large islands with seating, and dedicated areas for homework or remote work.

Hidden storage, soft-close cabinetry, and clutter-free layouts make kitchens easier to maintain and more enjoyable to use. The goal is to create a central hub that supports daily routines while remaining welcoming and visually calm.

Sustainability and Energy Efficiency

Eco-conscious design is no longer optional it’s a priority. Modern kitchen extensions are now built with high-performance insulation, advanced glazing, and energy-efficient lighting and appliances. Many homeowners are also choosing sustainable materials and heating solutions that reduce environmental impact and lower running costs.

A well-designed extension not only looks good but also makes the home warmer, quieter, and more economical to run.

Planning Your Budget with Confidence

Understanding your budget early is essential to a successful project. Size, layout changes, structural work, and finish quality all influence overall pricing. Many homeowners researching kitchen extension cost Dublin are looking not only for affordability, but for clarity, quality, and long-term value.

A professionally delivered kitchen extension is one of the strongest investments you can make, adding significant appeal, usability, and resale potential to your Blackrock home.

Why Blackrock Homes Are Ideal for Kitchen Extensions

Blackrock properties often offer strong foundations for rear and side extensions, generous gardens, and excellent natural light. Combined with high local property values and a growing demand for modern living spaces, kitchen extensions in the area continue to rise in popularity.

Homeowners are choosing to improve rather than move transforming outdated kitchens into bright, contemporary spaces that truly fit modern lifestyles.

Frequently Asked Questions

Q1. Do I need planning permission for a kitchen extension in Blackrock?

Some small extensions may fall under exempt development, but this depends on size, design, and location. It is always best to seek professional advice to ensure full compliance with planning and building regulations.

Q2. How long does a typical kitchen extension take to complete?

On average, construction takes between 8 and 14 weeks, depending on complexity, weather, and structural requirements. Additional time should be allowed for design, permissions, and finishes.

Q3. What features add the most value to a kitchen extension?

Natural light, open layouts, energy efficiency, quality materials, and strong indoor–outdoor connections add the greatest long-term value. Well-designed storage and modern appliances are also major selling points.

Q4. Can I stay in my home during the build?

In many cases, yes. However, there may be temporary disruption. An experienced contractor will phase the work carefully to minimise inconvenience and maintain household safety.

Period Home Renovation Mistakes to Avoid in Dublin

Period homes offer timeless character, architectural detail, and craftsmanship that modern houses often cannot replicate. From Georgian townhouses to Victorian terraces and Edwardian family homes, these properties bring charm and history but they also require a very different approach to renovation. Without the right planning and expertise, it’s easy to make costly mistakes that can damage the structure, reduce value, and compromise the health of the building.

Whether you’re planning a full refurbishment or targeted upgrades, understanding the most common mistakes can help you protect your investment and achieve better long-term results.

1. Starting Work Without Proper Assessment

One of the biggest mistakes homeowners make is beginning renovations without a full understanding of how their home was built. Period properties were constructed using traditional methods and breathable materials that behave very differently from modern systems.

Hidden issues such as damp, timber decay, outdated wiring, and structural movement are common. Without a detailed survey, renovation work can uncover serious problems mid-project, leading to delays, stress, and escalating costs.

A professional assessment allows you to plan correctly from the start, prioritise essential works, and avoid unexpected complications.

2. Using Inappropriate Modern Materials

Applying modern solutions to old buildings is one of the most damaging mistakes. Cement renders, waterproof coatings, and non-breathable insulation can trap moisture inside walls, leading to mould, internal damp, and decay of brickwork and timber.

Period homes need materials that work with the building, not against it. Breathable plasters, lime-based mortars, and compatible insulation systems allow moisture to escape naturally and help maintain a healthy indoor environment.

Renovation should always respect the original structure while improving comfort and performance.

3. Removing or Replacing Original Features

Original elements such as sash windows, fireplaces, cornicing, internal doors, staircases, and timber floors are a major part of what gives period homes their value and character. Removing these features for convenience or short-term aesthetics often results in regret.

Rather than stripping out, successful renovations focus on restoration and integration. Original features can often be repaired, upgraded, or incorporated into modern layouts while maintaining their historic appeal.

Once removed, true craftsmanship is extremely difficult and costly to replicate.

4. Ignoring Underlying Structural Problems

Cracks, sloping floors, sticking doors, and recurring damp are not just cosmetic issues. They often indicate deeper structural or moisture-related problems. Simply covering these with new finishes does not solve the cause and can make future repairs far more complex.

Period home renovation should always prioritise the health of the building before cosmetic upgrades. Addressing foundations, roof structures, drainage, and timber integrity protects the long-term stability of the property.

5. Poor Planning and Lack of Compliance

Many period properties fall within conservation areas or are protected structures. Making changes without checking planning requirements can result in enforcement notices, legal issues, and costly rework.

Even when planning permission is not required, building regulations still apply. Fire safety, insulation upgrades, ventilation, and structural alterations must be handled carefully to suit older buildings.

Early professional input helps ensure the renovation complies with regulations while preserving the home’s character.

6. Treating a Period Home Like a Modern Build

A critical mistake is assuming that what works in a new home will work in a 100-year-old one. Period properties need bespoke solutions. Standard renovation approaches can unintentionally cause damp, poor air quality, and material failure.

Homeowners researching period home renovations Dublin often discover that successful projects combine heritage understanding, modern performance goals, and skilled craftsmanship rather than generic renovation methods.

7. Choosing Contractors Without Period Experience

Not all builders are experienced in working with older buildings. Lack of period knowledge can result in inappropriate materials, loss of original detailing, and preventable structural issues.

When planning a project, homeowners exploring period property renovation Dublin should look for teams with a strong portfolio of heritage and period work. Experience ensures that modern upgrades are delivered without compromising historical value.

Why Avoiding These Mistakes Matters

A well-executed period renovation can dramatically improve comfort, safety, and efficiency while preserving what makes the home special. When done correctly, it can:

Extend the life of the building
Improve indoor comfort and air quality
Protect original architectural features
Increase long-term property value
Reduce future maintenance issues

Avoiding common mistakes ensures your renovation strengthens the home rather than undermining it.

Frequently Asked Questions

Q1. Why are period homes more challenging to renovate?

They use traditional construction methods and breathable materials that respond differently to moisture, heat, and movement. Renovations must work with these systems rather than replacing them with incompatible modern solutions.

Q2. Can I modernise a period home without losing its character?

Yes. Thoughtful renovations integrate modern comfort and efficiency while restoring and highlighting original features. The key is sensitive design and appropriate materials.

Q3. Do I need a specialist survey before renovating?

Yes. Period home surveys identify hidden issues such as damp, timber decay, and structural movement, allowing works to be planned correctly and safely.

Q4. Is planning permission always required?

Not always, but many period homes are in conservation areas or protected. Even internal works can be restricted. Always check requirements before starting.

Final Thoughts

Renovating a period home is both an opportunity and a responsibility. These buildings reward careful planning, specialist knowledge, and respectful craftsmanship. By avoiding common renovation mistakes, homeowners can protect architectural heritage, improve daily living, and secure the long-term health of their property.

Author Archives: vladislav

Extension vs Retrofit: Which Option Saves More Money in Dublin?

What Are We Actually Comparing?

The Real Cost Breakdown

House Extensions in Dublin

House Deep Retrofit in Dublin

Which One Saves More Money Long-Term?

If Your Bills Are Eating Your Budget

If Your Family Has Outgrown the Space

If You’re Planning to Sell in the Next Few Years

Hidden Costs That Catch People Off Guard

How Long Does Each Project Take?

The VS Builders Approach

Making the Right Call for Your Home

A Word on Grants and Incentives

Building Smart, Not Just Big

Frequently Asked Questions

Q1: Is a house extension or a retrofit better for adding value before selling in Dublin?

Q2: Can I get SEAI grants for a house extension in Dublin?

Q3: Do I need planning permission for a house extension in Dublin?

Q4: How much can a deep retrofit actually reduce my energy bills in Dublin?

Q5: Can VS Builders handle both an extension and a retrofit on the same project?

Budgeting for a Home Upgrade in Dublin: Extensions, Retrofits & Renovations Explained

Why Dublin Homeowners Are Investing in Upgrades Right Now

The Three Main Types of Home Upgrades and What Each Actually Costs

House Extensions

Kitchen Extensions Specifically

House Deep Retrofits

Period Property Renovations

How to Budget Sensibly for a Dublin Home Upgrade

Step 1: Define Your Brief Clearly

Step 2: Get Multiple Quotes

Step 3: Understand the Full Cost

Step 4: Plan for Contingency

Step 5: Explore Grants Early

What to Look for in a Dublin Building Contractor

A Quick Cost Summary: Dublin Home Upgrades at a Glance

Building Smart: Your Next Step

Frequently Asked Questions

1. How long does a typical home renovation or extension take in Dublin?

2. What SEAI grants are available for home energy upgrades in Dublin?

3. Do I need planning permission for a house extension in Dublin?

4. What is a core and shell extension, and is it a cost-effective option?

5. How do I find a reliable building contractor in Dublin for renovations or retrofits?

How to Modernize a Period Home Without Losing Its Character

Why Period Homes Deserve a Thoughtful Approach

Start With a Clear Vision Before You Touch Anything

Preserve the Features That Make It Irreplaceable

Original Cornicing, Ceiling Roses, and Architraves

Period Fireplaces and Chimney Breasts

Original Timber Floors and Staircases

Upgrade the Energy Performance Without Compromising the Walls

Internal Insulation Options

External Insulation: When and Where It Works

Windows and Doors

Deep Retrofits and SEAI Support

Extend Thoughtfully to Add the Space You Need

Key Principles for Period-Sensitive Extensions

Modernise Kitchens and Bathrooms Without Going Generic

Kitchens

Bathrooms

Work With Builders Who Understand Older Homes

Building Better While Keeping What Matters Most

Frequently Asked Questions

Q1: Can I add external wall insulation to a period home without changing its appearance?

Q2: Do I need planning permission to extend a period home in Dublin?

Q3: What is the best insulation for solid stone or brick walls?

Q4: How long does a typical period home renovation take?

Q5: Are SEAI grants available for retrofitting a period property in Ireland?

Step-by-Step Guide to Planning a House Retrofit in Dublin

What Is a House Retrofit and Why Does It Matter in Dublin?

Step 1: Understand What Your Home Actually Needs

Start With a Building Energy Rating (BER) Assessment

Look for the Key Problem Areas

Step 2: Set a Realistic Budget and Explore SEAI Grants

What Grants Are Available?

What Does a Retrofit Cost in Dublin?

Step 3: Choose the Right Type of Retrofit for Your Home

Deep Retrofit

External Wall Insulation (EWI)