Construction builder not finished job

Reviewed by Sean McNamara, 2026-10-07

Incomplete building work is the most common building dispute in the UK. The law is on your side - the contract (even a verbal one) and the Consumer Rights Act 2015 both require the work to be done with reasonable care and skill, and to a reasonable time - but your sequence of steps decides whether you recover money or just collect grievances.

Your rights, in plain terms

Consumer Rights Act 2015 (services): work must be performed with reasonable care and skill, at a reasonable price, within a reasonable time. Breach entitles you to repeat performance or a price reduction. The Supply of Goods and Services Act 1982 backs this for older contracts. JCT or other written contracts add notice-and-cure mechanics - read them before terminating anything.

The escalation ladder

1) Written completion demand with a deadline. 2) Letter before action following the Pre-Action Protocol for Construction and Engineering Disputes (which for homeowner claims is short-form but still required). 3) County court claim (under £10,000: small claims track; £10,000-£25,000: fast track; above or complex: consider adjudication for construction contracts or solicitor advice). Keep every step documented - the file wins the case.

Frequently asked questions

What should I do if my builder hasn't finished the job?

Freeze the timeline in writing: one dated message stating what remains incomplete against the agreed scope, requesting a completion date. Photograph everything. Then check the contract's notice-to-cure provisions before escalating. The written record from day one is what tribunals and courts actually read.

What happens if the builder doesn't finish the job?

You gain remedies progressively: damages for delay, the right to engage another contractor (reasonable cost recoverable), and for serious breach, termination of the contract. Termination wrongfully exercised is the classic mistake - get the sequence right or the claim flips against you.

What should I do if my builder is refusing to complete the work?

Formal notice: letter setting out the incomplete items, a reasonable deadline (14-28 days typical), and your intention to engage alternative contractors at their cost if the deadline passes. Send tracked. This converts a stalemate into an evidence trail supporting your claim.

What to do if a builder walks off a job?

Document site condition immediately (photos, video, notes), secure the site, quantify work done vs paid, and issue the letter before action after one final deadline. Walking off mid-job is repudiatory breach in most cases - but confirm with the contract terms before treating the contract as ended.

Is it worth taking a builder to court?

For claims within the small claims track (under £10,000 in England and Wales): yes, typically - fees are modest, legal representation is not required, and documented cases with photo evidence succeed regularly. Above that, adjudication (construction contracts) or legal advice becomes proportionate.

Can I sue my builder for stress?

General damages for stress are not recoverable in building contract claims - damages cover financial loss. Distress matters only where a consumer contract promised peace of mind (rare). Claim the repair costs, delay costs and alternative-accommodation costs where genuinely incurred.

Sources

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