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How do self-build mortgages work in Ireland?

A self-build mortgage releases funds in stages against the value of work completed, verified by a valuer or the project professional. You usually need site ownership, full planning permission and evidence of a realistic build cost before drawdown begins.

Lenders typically release funds in four to five stages — foundations, wall plate, roofed and plastered, and completion — with a valuation inspection at each. Because money arrives after work is done, you need working capital or a first tranche of your own funds.

Lenders require full planning permission with the appeal period expired, a costed schedule, proof of all-risks insurance and confirmation of the certification route being used.

Documents lenders usually ask for

  • Grant of permission and stamped drawings
  • Detailed cost breakdown or contract sum
  • Site title and folio details
  • Contractor's insurances and tax clearance
  • Certification route and professional appointments

Sources

Last reviewed 28 August 2026. General information only — not legal or planning advice.

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