"In Dublin in 2026, standard to high-end architectural residential extensions cost between €2,200 and €3,400 per square metre (ex. VAT at 13.5%). A turnkey 40m² rear extension typically ranges from €105,000 to €155,000 depending on structural steel, glazing format, and ground conditions."
| Specification Level | Cost / m² (ex. VAT) | 40m² Turnkey Range |
|---|---|---|
| Standard Build Quality | €2,200 – €2,500 | €100,000 – €115,000 |
| High-End Architectural | €2,600 – €3,200 | €120,000 – €145,000 |
| Ultra-Luxury Bespoke | €3,400 – €4,000+ | €155,000 – €180,000+ |
Residential construction services in the Republic of Ireland are subject to a reduced VAT rate of 13.5% (the Two-Thirds Rule applies).
Dublin commands higher trade labor rates, stringent council disposal fees, restrictive site access in mature suburbs, and higher structural engineering demands for open-plan living.
Consultations conducted Monday to Friday across South Dublin, North Dublin, Kildare, and Wicklow. Guaranteed itemized fixed-price RIAI tenders.
