House Extensions That Add Space, Light & Real Value
Why Extend?
Most 1970–90 homes around Dublin were laid out for smaller families and separate rooms; today’s open-plan life needs more flow and better garden connection. How much extra floor-area can home extensions add without formal planning? Home extensions deliver up to 40 m² extra floor-area without formal planning when the house has never been extended before, thanks to Schedule 2 exemptions in Irish planning law. What is the typical budget per m² for a builders-finish extension in 2025? Homeowners report budgeting €1,800 – €2,500 per m² for a builders-finish in 2025, depending on glazing and insulation spec.
Planning Snapshot
Exempt size limit
40 m² at ground level; anything bigger, or a second storey, needs permission.
Distance & height rules
two-metre set-back from boundaries for first-floor work, max ridge 6 m on pitched roofs.
Protected facades
if the house is listed, or the extension alters the front elevation, lodge a full planning file.
Popular Extension Types
| Style | Typical Gain | Key Design Notes |
|---|---|---|
| Rear Kitchen-Diner | 20–30 m² | Roof lights + bifold or French doors catch 2025’s “indoor-outdoor” trend. |
| Side-Return | 12–18 m² | Ideal for Victorian terraces; slimline glazing keeps the alley bright. |
| Wrap-Around (L-Shape) | 30–40 m² | Combines rear & side; needs structural steel and Part L energy upgrade. |
| Double-Storey Add-On | 30 m² + | Adds bedroom above; height & overlooking rules apply. |
Can I Get a Grant?
| Grant Route | Covers Extension Work? | How It Helps |
|---|---|---|
| Individual Insulation Grants | Yes – if you upgrade walls or attic at the same time. (seai.ie) | Flat-rate payments knock thousands off fabric costs. |
| One-Stop-Shop (Deep Retrofit) | Yes – when the extension is bundled with whole-house upgrades to BER B2+. (seai.ie) | Grant values deducted up-front; SuperHomes handles paperwork. |
| Energy Upgrade Scheme (€700–€10k range) | Partial – solar PV & heating controls often paired with new open-plan spaces. | Cash boosts plus low-interest green loans. |
From First Sketch to Finished Room
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Free site chat – we measure, flag planning limits & outline budget.
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Concept & quote – fixed price once layout and glazing agreed.
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Planning or exemption cert – if required, we prepare drawings & lodge.
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Build phase – average rear/side extension takes 8–12 weeks on site.
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Snag + handover – includes airtightness report & Part L cert where fabric upgraded.
FAQs
Why choose sustainable house extensions in Dublin?
Sustainable house extensions in Dublin use eco-friendly materials and efficient designs. VS Builders in Dublin integrates sustainability to reduce energy use and environmental impact.
How can cost-effective house extensions in Dublin be achieved?
Cost-effective house extensions in Dublin use efficient designs and materials. VS Builders in Dublin offers competitive pricing without compromising quality.
What services do house extension companies in Dublin provide?
House extension companies in Dublin offer design, planning, structural work, and finishing to expand residential spaces. VS Builders in Dublin specialises in high-quality, compliant house extensions tailored to client needs.
How do residential extension contractors in Dublin manage projects?
Residential extension contractors in Dublin coordinate trades, secure permits, and manage schedules to deliver timely extensions. VS Builders in Dublin ensures smooth project management with expert craftsmanship.
Who are the trusted home extension builders in Dublin?
Trusted home extension builders in Dublin provide quality materials and skilled labor to create seamless additions. VS Builders in Dublin is known for reliable, bespoke extension projects that enhance living spaces.