Builder won't finish the job? Your options and how to protect the money

First, work out what has actually happened

A slow job and an abandoned one are not the same thing. Renovations often run over, and a reasonable delay is not a breach of anything. When we asked 300 UK homeowners what went wrong, the recurring phrases were telling: “he didn’t turn up” and “not finished on time” (see the survey). The moment to act is when the work stops and communication goes quiet, not when a job is simply taking longer than you hoped. Start by being clear with yourself about which one you are dealing with.

Step 1: put it in writing, with a deadline

Contact your builder in writing, by email or text, so there is a record. Describe the work that is outstanding, ask them to confirm when they will return, and set a reasonable deadline. Keep it factual and calm rather than angry, because this same record may matter later. Take dated photos of the state of the work as it stands, and keep every message, invoice and receipt together in one place.

Step 2: know your rights under the Consumer Rights Act

For domestic building work, the Consumer Rights Act 2015 says a service must be carried out with reasonable care and skill. If the work is left unfinished or falls short of that standard, you are entitled to a remedy, usually having the work put right, or a reduction in what you pay. Knowing this changes the conversation: you are not asking a favour, you are asking for something you are owed.

Step 3: do not pay for work that is not done

The leverage you have is any money you have not yet handed over. Hold back payment for work that has not been completed, and do not be pressured into releasing the final amount to tempt someone back. This is also the hard lesson at the centre of this problem: if you have already paid well ahead of the work, that leverage is gone, which is exactly why the payment structure matters so much.

Step 4: recover what you are owed

If the builder will not return, get written quotes from others to finish the work. The difference between what you agreed and what it now costs to complete may be recoverable from the original builder. Citizens Advice can guide you through raising it formally, and for sums up to £10,000 you can make a claim in the small claims court without a solicitor. Keep it proportionate: the goal is your money and a finished home, not a drawn-out fight.

The best protection is the payment structure

Choosing a well-vetted builder is the first layer of protection, and worth doing carefully (here is how to find one you can trust). But even a good builder can run into trouble mid-job, so the second layer is how the money is held. If payments are released only as each stage is finished, an unfinished job simply means the remaining money is still yours to redirect.

That is the idea behind Renno. Your money for each stage is held in a protected account and released only when that stage is done and you are happy with it, the same principle as renovation escrow. A builder who walks away has not walked away with your money, and finishing the job with someone else becomes a practical problem rather than a financial disaster.

Related reading: The safest way to pay a builder · What to do when a customer won’t pay: a UK builder’s guide.