What is a Self-Build Mortgage?
Self-build mortgages are mortgage facilities arranged for individuals building their own home. This mortgage category encompasses both direct labour construction and houses built by contractors under a building agreement.
Building one's home is not for everybody but, in almost all circumstances, results in lower house purchase costs when compared to a ready-built house. The degree of control over design and specification is also a significant advantage.
How Self-Build Mortgages Work
Unlike a standard mortgage where funds are released in one lump sum on purchase, a self-build mortgage releases funds in staged drawdowns as construction progresses. This protects both you and the lender.
Typical stages at which funds are released:
- Land purchase / foundations — initial drawdown to acquire the site and begin groundworks
- Wall plate level — walls are up to roof height
- Roof complete — structure is weathertight
- First fix — internal framing, plumbing, and electrical first fix complete
- Second fix / completion — plastering, fitting out, and final finishes
The lender will send a valuer to inspect the property at each stage before releasing the next tranche of funds.
Costs and Planning
Self-build projects require careful financial planning. Key costs include:
- Site purchase — land costs vary enormously by location
- Planning permission — architect and planning fees
- Construction costs — typically €150,000–€300,000+ depending on size and specification
- Professional fees — architect, engineer, quantity surveyor
- Connection fees — electricity, water, roads
- Contingency — allow 10–15% for unforeseen costs
Direct Labour vs. Contractor
Direct labour means you manage the build yourself, hiring individual tradespeople (blocklayers, roofers, plumbers, electricians). This can reduce costs significantly but requires considerable time, expertise, and project management.
Contractor build means hiring a main contractor who manages the entire build under a building agreement. More expensive, but less stressful and more predictable in terms of timeline and cost.
Most lenders are comfortable with either approach provided you have appropriate professional oversight.
Requirements for Lenders
To qualify for a self-build mortgage in Ireland, lenders typically require:
- Full planning permission before funds are drawn down
- An architect or engineer to certify each stage of construction
- A fixed-price building contract (for contractor builds)
- Site insurance and public liability insurance during construction
- Compliance with building regulations — a Certificate of Compliance is required on completion
VAT Refund Scheme
Owner-occupiers who build their own home may be eligible for a VAT refund on certain building materials under the Revenue VAT Refund Scheme. This can represent a significant saving — VAT at 13.5% applies to most building materials. Speak to your accountant or tax adviser about eligibility.
Getting the Right Advice
Self-build mortgages are more complex than standard mortgages. Speak to a mortgage broker with experience in self-build lending to:
- Identify lenders willing to fund your project
- Understand the drawdown schedule and cash flow implications
- Ensure your planning, insurance, and professional sign-off are in order before you begin