Complaining about a half-finished extension in Hull City Council

The short answer: an abandoned extension is urgent — it's open to weather and it's uncertified. Make safe, photograph, price completion, and move fast on the paper: letter before action with a completion demand or refund of the completion cost.

REVIEWED BY: Sean McNamara on 2026-09-03

This week, in order

1. Make safe — temporary cover over openings; keep every receipt (recoverable mitigation). 2. Photograph everything — the open build, the agreed scope from the quote side by side. 3. Building control — check which inspections were booked/passed with your local authority; missing sign-off is a real loss (why certificates matter). 4. Two completion quotes — independent builders; the differential over the original price is part of your loss. 5. The letter — completion by a date, or refund of the completion cost, 14 days (structure).

The rest of the route

Extension dispute guide → schedule of loss → Claims up to £10,000: small claims track.

Report it: the Citizens Advice consumer service passes reports to Hull City Council Trading Standards — council page (verified 2026-09-04).

Independent information directory — not legal advice.

Source: https://hull.gov.uk/private-landlords/trading-standards-advice-letting-agents (verified 2026-09-04).

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