Valuing a home extension claim — the worksheet with home extension-specific lines

The short answer: a home extension claim total = proper remedial cost + consequential damage − recoveries + fee. The trap is under-claiming: foundations, weathering, building-control sign-off failures usually cost more to fix properly than to patch.

REVIEWED BY: Sean McNamara on 2026-09-03

Home extension lines

1. Remedial cost — quotes must cover foundations, weathering, building-control sign-off properly (strip-and-redo where needed, not patch): £____ 2. Consequential damage — water/structural knock-on effects, receipts: £____ 3. Professional fees — surveyor where cause is disputed: £____ 4. Certificates/sign-off — cost of retrospective building-control or certification route: £____ 5. Minus recoveries; plus court fee and interest.

Every line documented; total consistent everywhere. Full worksheet: claim value checker. Project evidence rules: home extension.

Independent information directory — not legal advice.

Reviewed by Sean McNamara · 2026-09-03 · Independent information directory — not legal advice.