🏠 How Much Does a House Extension Cost in Dublin (2024)?
- Hedonisthome Alex
- Apr 4
- 2 min read
Updated: Apr 5
Thinking about expanding your home? Whether you need a bigger kitchen, an extra bedroom, or a sun-filled living space — a house extension can be a smart and valuable investment. But how much does it actually cost to build a house extension in Dublin?
In this article, we’ll break down the average prices, what affects the cost, and how to budget your project wisely.
Average Cost of a House Extension in Dublin
As of 2024, the average cost of a house extension in Dublin ranges between €1,800 and €2,500 per square metre. That means:
A 20m² extension can cost between €36,000 and €50,000
A 30m² extension might range from €54,000 to €75,000
Prices include: foundations, walls, roofing, windows, doors, insulation, electrics, plumbing, flooring, finishes, and VAT.
What Affects the Cost of a House Extension?
Several key factors can increase or decrease your final price:
Type of ExtensionRear, side-return, wrap-around, or attic? Each has its own complexity.
Site ConditionsPoor soil, restricted access, or uneven land can increase construction time and cost.
Size & LayoutLarger extensions are more expensive, but the cost per square metre usually drops as size increases.
Level of FinishingHigh-end materials, underfloor heating, or bespoke joinery can drive up the budget.
Planning PermissionNot always required, but if it is, it adds time and fees.
What Affects the Cost of a House Extension?
Several key factors can increase or decrease your final price:
Type of ExtensionRear, side-return, wrap-around, or attic? Each has its own complexity.
Site ConditionsPoor soil, restricted access, or uneven land can increase construction time and cost.
Size & LayoutLarger extensions are more expensive, but the cost per square metre usually drops as size increases.
Level of FinishingHigh-end materials, underfloor heating, or bespoke joinery can drive up the budget.
Planning PermissionNot always required, but if it is, it adds time and fees.
Extension Types We Build
At Hedonist Home, we specialise in:
Rear & side extensions
Kitchen extensions
Loft and attic conversions
Wrap-around and double-storey builds
All our projects are fully insured, designed for your lifestyle, and come with a 2-year workmanship warranty
Special Offer — 10% Off Your First Extension Project
Get expert design + full construction with 10% OFF your first project when you book before April 30, 2024.
Book Your Free Consultation Today
Still unsure about the cost of your house extension? Contact us today for a free consultation and detailed quote tailored to your home.