Start Here — A Self-Build in Ireland Runs 18–36 Months and €350k–€800k, So Plan Around the Three Decisions That Actually Matter
On this page
The first decisions shape every other decision. Get these three right and most of the rest falls into place.
Where are you right now?
Quick path · 2 questionsSkip the wall of text. Pick the answer that matches your build and we'll route you to the stage that actually matters next.
1. Have you got a site yet?
- Yes — site is securedMove to planning permission next — you've already done the hardest part.Go →
- Looking — not yet securedRead the land and site assessment guide before you commit. Soil, access, services — all checked here.Go →
- No — still in early thinkingPlan the money first — site choice, team choice and build route all flow from the budget.Go →
2. Have you appointed an architect yet?
- Yes — architect is engagedSkip ahead — your architect handles the next 6–9 months of design and planning.Go →
- Not yet — shortlistingRead the architect-briefing guide before you talk to anyone. Locks the spec on day one.Go →
- Not yet — not sure I need oneYou do (almost certainly — see Stage 4). Read it before you decide.Go →
When this matters most
You're still choosing a site, you're still choosing an architect, or you haven't decided whether to build at all (vs buying a resale).
When this doesn't apply
You've already bought a site, appointed an architect, and signed a building contract. You're in stages 5–18 of this site, not Start Here.
Frequently asked questions
How long does a self build take in Ireland from start to keys?
18–36 months from soil test to handover is typical. Planning adds 3–6 months on top. The build itself runs 9–15 months for a 150–200 m² house. Get the team and route locked in by month 6 or you'll run into 2027.
How much does a self build cost per m² in Ireland in 2026?
€2,500–€3,800/m² of finished floor area (SCSI TPI, Q1 2026). Add 15–25% for site-specific cost and a 10% contingency beyond that. A 180 m² house on a flat, serviced site is €450k–€684k before VAT.
Do I need planning permission for a self build in Ireland?
Yes, in nearly every case. Building a new one-off house requires planning permission, building regulations approval (Commencement Notice + BCAR), and an assigned certifier. Sub-€5,000 agricultural or maintenance works are exempt; building a house is not.
Can I get a mortgage for a self build in Ireland?
Yes. Self-build mortgages pay in stage drawdowns tied to build milestones. Help-to-Build gives €30,000 toward the deposit (10% of cost, up to €300k, since April 2025 scheme).
What is BCAR?
Building Control (Amendment) Regulation, in force since 2014. You must lodge a Commencement Notice and appoint an Assigned Certifier and Design Certifier before any work begins. Without BCAR sign-off you can't get a mortgage drawdown or connection to electricity or water.
Should I use a main contractor or direct labour?
Depends on your time, experience and tolerance for risk. Main contractor: ~12–18% on top of build cost, but less of your time. Direct labour: cheaper but 20+ hours/week project-managing for 9–15 months. Hybrid is most common.
Sources
CSO, Planning Permissions Q4 and Year 2025: 5,095 one-off houses granted in 2025, +3.9% YoY. https://www.cso.ie/en/releasesandpublications/ep/p-pp/planningpermissionsquarter4andyear2025/
SCSI (Society of Chartered Surveyors Ireland), Tender Price Index Q1 2026. https://www.scsi.ie/
Citizens Information, Planning permission for a house. https://www.citizensinformation.ie/en/housing/planning-permission/planning-permission/
Building Control (Amendment) Regulations 2014 (SI 9/2014), Department of Housing, Local Government and Heritage. https://www.gov.ie/
Frequently asked questions
How long does a self build take in Ireland from start to keys?
18–36 months from soil test to handover is typical. Planning adds 3–6 months on top. The build itself runs 9–15 months for a 150–200 m² house. Get the team and route locked in by month 6 or you'll run into 2027.
How much does a self build cost per m² in Ireland in 2026?
€2,500–€3,800/m² of finished floor area (SCSI TPI, Q1 2026). Add 15–25% for site-specific cost and a 10% contingency beyond that. A 180 m² house on a flat, serviced site is €450k–€684k before VAT.
Do I need planning permission for a self build in Ireland?
Yes, in nearly every case. Building a new one-off house requires planning permission, building regulations approval (Commencement Notice + BCAR), and an assigned certifier. Sub-€5,000 agricultural or maintenance works are exempt; building a house is not.
Can I get a mortgage for a self build in Ireland?
Yes. Self-build mortgages pay in stage drawdowns tied to build milestones. Help-to-Build gives €30,000 toward the deposit (10% of cost, up to €300k, since April 2025 scheme).
What is BCAR?
Building Control (Amendment) Regulation, in force since 2014. You must lodge a Commencement Notice and appoint an Assigned Certifier and Design Certifier before any work begins. Without BCAR sign-off you can't get a mortgage drawdown or connection to electricity or water.
Should I use a main contractor or direct labour?
Depends on your time, experience and tolerance for risk. Main contractor: ~12–18% on top of build cost, but less of your time. Direct labour: cheaper but 20+ hours/week project-managing for 9–15 months. Hybrid is most common.
When this matters most
You're still choosing a site, you're still choosing an architect, or you haven't decided whether to build at all (vs buying a resale).
When this doesn't apply
You've already bought a site, appointed an architect, and signed a building contract. You're in stages 5–18 of this site, not Start Here.
Briefs in this stage
12 in-depth answers for this stage of the build. Pick the one that matches your question.
Budgeting a Self-Build in Ireland 2026 — The 5 Numbers Every Self-Builder Must Know
Five numbers: build €/m², site works, fees, VAT, contingency. Set them in the first month. Re-check at each stage.
budgeting a self build Ireland 2026Read brief →
Commit or Buy a House in Ireland — The Honest Trade-Offs of Self-Build vs Resale in 2026
Self-build costs €600k–€1m and takes 18–36 months. A resale in Dublin is €450k–€650k today. Here's how to choose.
self build or buy a house IrelandRead brief →
How Long Does a Self-Build Take in Ireland? The 18–36 Month Timeline, Stage by Stage
Pre-build (site + design) 6–12 months. Planning 3–6 months. Build on site 9–15 months. Snag + BCAR 6–10 weeks.
how long does self build take IrelandRead brief →
Self-Build Budget in Ireland 2026 — What €600k–€1m Actually Buys You
Build is €450k–€684k on a 180 m² house. Site works, fees, services, VAT and contingency add 30–55% on top.
self build budget Ireland 2026Read brief →
Self-Build First Steps in Ireland — The Seven Decisions to Make Before You Instruct Anyone
Site, team, route, budget, finance, entity, insurance. Lock these seven in before you draw a line on paper.
self build first steps IrelandRead brief →
Self-Build Insurance and Warranty in Ireland — Site Cover, Structural Warranty, and Latent Defects
Site insurance €800–€2,500/year. Structural warranty (HomeBond, Premier) €2,500–€5,000. Latent defects €2,500–€4,500.
self build insurance IrelandRead brief →
Self-Build Mortgages in Ireland — How Stage Drawdowns Work, Who Lends, and What You Need to Show
Stage drawdowns pay 15% at foundation, 15% at wall plate, 15% at weathertight, 25% at first/second fix, 10% at completion.
self build mortgage IrelandRead brief →
Self-Build Team in Ireland 2026 — Who You Need, When to Hire, and the Cost
Self-build team: architect, engineer, Assigned Certifier, BER assessor, QS, solicitor, builder. Hire in order, not all at once.
self build team Ireland 2026Read brief →
Self-Build Timeline in Ireland 2026 — Month-by-Month, What Happens and When
Self-build timeline: month 0–6 site and design, month 6–9 planning, month 9–24 build, month 24–26 snag and BCAR.
self build timeline Ireland 2026Read brief →
Self-Build vs Renovating in Ireland — When a Deep Retrofit Beats a Knock-Down Rebuild
Retrofit of a 1970s bungalow: €310k, 6–12 months. Knock-down rebuild: €600k–€1m, 24–30 months. Trade-off is the existing structure.
self build vs renovate IrelandRead brief →
Sole Trader or Limited Company for a Self-Build in Ireland — The Tax and VAT Trade-Off
Sole trader registration lets most self-builders reclaim VAT at 13.5% on labour and 23% on materials.
sole trader self build IrelandRead brief →
When to Appoint an Architect in Ireland — Before Site Purchase, Not After Planning
Appoint before you sign the purchase contracts. Re-doing planning over a missed design point is the most expensive mistake on this site.
when to appoint architect self buildRead brief →
Where to go next
Next decision
The next step in your build sequence.
- Budgeting a Self-Build in Ireland 2026 — The 5 Numbers Every Self-Builder Must Know →
- Self-Build Budget in Ireland 2026 — What €600k–€1m Actually Buys You →
- Self-Build First Steps in Ireland — The Seven Decisions to Make Before You Instruct Anyone →
- Self-Build Insurance and Warranty in Ireland — Site Cover, Structural Warranty, and Latent Defects →
Branch into
Adjacent decisions at the same stage.
- How Long Does a Self-Build Take in Ireland? The 18–36 Month Timeline, Stage by Stage →
- Self-Build Mortgages in Ireland — How Stage Drawdowns Work, Who Lends, and What You Need to Show →
- Self-Build Team in Ireland 2026 — Who You Need, When to Hire, and the Cost →
- Self-Build Timeline in Ireland 2026 — Month-by-Month, What Happens and When →
- Self-Build vs Renovating in Ireland — When a Deep Retrofit Beats a Knock-Down Rebuild →
- When to Appoint an Architect in Ireland — Before Site Purchase, Not After Planning →
Watch out for
Common mistakes, hidden costs, gotchas.
Compare with
Alternative approaches worth knowing.