Self-Build Cost per m² in Ireland 2026 — Total Project Cost and the Line Items
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Build: €2,500–€3,800/m². Site: €20k–€80k. Fees: €25k–€60k. VAT: €30k–€90k. Contingency: 10% minimum. Total: €600k–€1m.
Total self-build project cost in Ireland 2026: €600k–€1m for a 150–200 m² house. Build is €2,500–€3,800/m² of finished floor area (SCSI Q1 2026), so €450k–€684k for a 180 m² house. On top of that: site works €20k–€80k (slope, access, services, septic, well), professional fees €25k–€60k (architect 8–12% of build, engineer, BER assessor, quantity surveyor, solicitor), connection charges €5k–€15k (ESB, Uisce Éireann, gas if applicable), VAT €30k–€90k (13.5% on labour, 23% on materials for non-VAT-registered self-builders), and contingency €45k–€68k (10% of build). Site-specific cost is the variable most first-time self-builders underestimate. Plan 15–25% on top of the build for site works. About 80% of self-builders cannot recover VAT in full.
TL;DR
Total self-build project cost in Ireland 2026: €600k–€1m for a 150–200 m² house. Build is €2,500–€3,800/m²; everything else is 30–55% on top.
Build: €450k–€684k. Site: €20k–€80k. Fees: €25k–€60k. Connections: €5k–€15k. VAT: €30k–€90k. Contingency: 10% minimum.
Site-specific cost is the variable most first-time self-builders underestimate. Plan 15–25% on top of the build for site works.
When this matters most
You're shaping the budget envelope and need a real number.
When this doesn't apply
You've signed a building contract with a fixed price.
Frequently asked questions
How much does a self-build cost in Ireland in 2026?
Total: €600k–€1m for a 150–200 m² house. Build: €450k–€684k. Site: €20k–€80k. Fees: €25k–€60k. VAT: €30k–€90k. Contingency: 10% minimum.
How much is site-specific cost?
15–25% on top of the build cost. €20k–€80k depending on the site. Slope, access, services, septic, long connection runs. Plan 20% as a rule of thumb.
Can I claim back VAT on a self-build in Ireland?
Partially. If you are VAT-registered, you can reclaim most VAT. If not (most self-builders), VAT applies at 13.5% on labour and 23% on materials. About 80% cannot recover VAT in full.
Sources
SCSI, Tender Price Index Q1 2026. https://www.scsi.ie/
Revenue Commissioners, VAT on residential property. https://www.revenue.ie/
Frequently asked questions
How much does a self-build cost in Ireland in 2026?
Total: €600k–€1m for a 150–200 m² house. Build: €450k–€684k. Site: €20k–€80k. Fees: €25k–€60k. VAT: €30k–€90k. Contingency: 10% minimum.
How much is site-specific cost?
15–25% on top of the build cost. €20k–€80k depending on the site. Slope, access, services, septic, long connection runs. Plan 20% as a rule of thumb.
Can I claim back VAT on a self-build in Ireland?
Partially. If you are VAT-registered, you can reclaim most VAT. If not (most self-builders), VAT applies at 13.5% on labour and 23% on materials. About 80% cannot recover VAT in full.
When this matters most
You're shaping the budget envelope and need a real number.
When this doesn't apply
You've signed a building contract with a fixed price.
Where to go next
Watch out for
Common mistakes, hidden costs, gotchas.