Planning guide · Ireland
Kitchen extension cost in Ireland.
A practical guide to early budgeting, what typical figures include and the choices that shape the final cost.
Quick answer
Allow for more than the build rate.
Irish contractor guides published in 2025–2026 commonly indicate approximately €2,500–€3,500 per m² for build-only kitchen extension work.
Small rear kitchen-extension projects are often discussed from roughly €45,000–€75,000, while larger standard projects can reach €65,000–€120,000 or more once the scope and fit-out develop.
These are broad market indicators, not a quotation. Published figures use different inclusions and may exclude the kitchen, professional fees, VAT or contingency.
01Budget drivers
What changes the cost?
- Size and layout
- The footprint matters, but a smaller extension can still carry substantial fixed costs for foundations, roof work and services.
- Structural changes
- Removing external walls, adding steelwork or changing floor levels can have a significant effect on the scope.
- Kitchen specification
- Cabinetry, worktops, appliances, plumbing and electrical choices sit outside many build-only rates.
- Glazing and rooflights
- Large-format doors, roof glazing and bespoke openings can move a project towards the upper end of a range.
- Access and ground conditions
- Restricted access, drainage and unexpected ground conditions can add labour, equipment and time.
- Professional input
- Architectural, structural, planning and certification costs should be allowed for separately unless expressly included.
02Comparing estimates
Check like for like.
Before comparing two figures, ask whether each one includes the same work.
- Site preparation, foundations and drainage
- Structural openings and steelwork
- Windows, doors and roof glazing
- Plumbing, heating and electrical work
- Kitchen units, worktops and appliances
- Professional fees, VAT and contingency
03Questions
Kitchen extension costs, explained.
How much does a kitchen extension cost in Ireland?
Published Irish contractor guides commonly place build-only kitchen extensions around €2,500–€3,500 per square metre. The final project budget may be higher once the kitchen, professional fees, VAT and contingency are included.
Is a kitchen included in the price per square metre?
Not always. Per-square-metre figures often describe the building work rather than kitchen units, appliances or specialist finishes. Ask what is included before comparing figures.
Do I need drawings before asking for a price?
Drawings help define the scope, but you can start a conversation with the property location, photographs and a clear description of what you want to achieve.
Why can two extensions of the same size cost different amounts?
Access, ground conditions, structural openings, glazing, services and finish level can change the work significantly, even when the floor areas are similar.
Market ranges reviewed October 2026 using published Irish contractor guides from BuildTech, Green Oak, Tradesmen.ie and Extensions Quote. Construction pricing changes over time; a site-specific scope is the only sound basis for an estimate.
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Planning a kitchen extension?
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