Snagging and the final payment: avoiding a stand-off

The last fortnight of a renovation decides how the whole project is remembered. The big structural work went fine, the rooms look transformed, and yet the relationship sours over a sticking door, a paint run and an invoice for the final balance. Snagging and the final payment are where good projects go wrong, and it is avoidable with a process both sides agree to before they get there.

What is snagging?

Snagging is the process of identifying and fixing the minor defects and unfinished details that remain when building work is substantially complete: paint runs, doors that catch, cracked tiles, missing sealant, a socket left hanging. In contract terms, it is the gap between practical completion, the point at which the space is usable and the job is essentially done, and full completion, when every item is closed out.

Three things are not snags, and confusing them causes arguments. Work that was never in the agreed scope is a variation, not a snag. Damage caused after handover is wear, not a snag. And a major defect, such as a leaking roof or failed screed, is not a snag either: it is incomplete work, and it belongs in a different, more serious conversation.

Why the final payment causes disputes

Final payments cause disputes because both sides' incentives fall out of alignment at exactly the same moment. Until now, the homeowner needed the builder to keep going, and the builder needed the next stage payment. At the end, the homeowner holds the last money and fears that once it is paid, the builder will never return to fix anything. The builder has every cost already sunk into the job and fears a snag list that grows each week the balance is unpaid.

So both sides reach for the only tool they have. The homeowner holds the entire final payment over a list of minor items; the builder threatens to walk, or does. Positions harden fast, and hardened positions are slow to unwind: if a dispute reaches court, a small claim took a median of 41 weeks to reach trial in the county court in April to June 2026 (Ministry of Justice, Civil Justice Statistics). Yet the snags at the centre of a final-payment stand-off are often minor items, small next to the balance being held.

What a fair snagging process looks like

A fair snagging process is one consolidated list, a joint walkthrough, agreed timescales, and written sign-off. In practice:

1. Walk the job together at practical completion, and write one dated list. A single list matters: a list that grows by text message every few days feels endless to the builder and undermines your credibility on the items that count.
2. Sort the list honestly. Snags in one column; variations and wishlist items in another, priced separately if you want them done.
3. Agree a window. A couple of weeks is reasonable for a typical domestic list; longer if materials need ordering.
4. Re-inspect and sign off in writing once items are cleared. Done means done.

This works best when the earlier stages were structured properly too, with each payment tied to defined, checkable work. Our guide to stage payments for building work covers how to set that up from day one.

Your rights under the Consumer Rights Act 2015

The Consumer Rights Act 2015 entitles you to building work carried out with reasonable care and skill, and if it is not, to have the work put right or the price reduced. The Act implies these terms into every contract between a consumer and a trader, written or verbal. Materials must be of satisfactory quality and match their description, the service must be performed with reasonable care and skill, and where no price was agreed in advance, you owe a reasonable price.

When the work falls short, the Act gives you an order of remedies. First, repeat performance: the builder must put the defective work right, at their own cost, within a reasonable time and without significant inconvenience to you. If that is impossible, or the builder fails to do it, you are entitled to a price reduction that reflects the shortfall. The sequence matters in practice: the law expects the builder to get a chance to fix the problem before money is the remedy.

The risks of just not paying

Refusing to pay the whole bill puts you in breach of contract if the amount you hold back is more than the defects justify. Withholding is a right of proportion, not a veto. Hold back £12,000 over £900 of defective tiling and you are the one breaking the agreement: the builder can sue for the balance, claim any interest their contract provides, and stand a good chance of winning most of it.

The practical fallout is usually worse than the legal position. Work stops, so you are living in the defect. The builder who was going to fix things for goodwill is now fixing nothing, on advice. And if it does reach court, a judge will ask one question about your withholding: was it proportionate to the actual cost of putting things right? "I was unhappy so I paid nothing" is not an answer that has ever done well.

How to document defects properly

Document defects in writing, with dated photographs, before you mention money at all. Evidence gathered before a dispute exists is worth double evidence assembled afterwards.

• Write one list, item by item, referencing the quote, drawings or specification each item fails against.
• Photograph and date everything, wide shots for context and close-ups for detail.
• Invite the builder to inspect and fix. This is the repeat performance route the Act expects you to offer. Do it in writing with a reasonable window.
• Keep every message. The texts and emails around a defect often decide later who behaved reasonably.
• For serious or contested defects, commission an independent report. A RICS-qualified surveyor or relevant specialist can confirm the defect and put a professional figure on the cost of remedy. That figure becomes the anchor for everything that follows.

The right way to withhold

If you withhold, withhold a specific amount, tied to a costed defect list, communicated in writing, alongside payment of everything that is not in dispute. Paying the undisputed balance is the move most people miss, and it transforms your position: you are no longer a non-payer, you are a customer withholding a quantified sum for quantified reasons. State the amount held, the items it relates to, the basis for the figure, and that it will be released when the items are put right. Offer access for the fix, propose a deadline, and suggest mediation or an independent expert if you cannot agree.

Hold back only what is unfinished: the middle path on the final 10%

The middle path is to pay for what is genuinely finished and hold back only the fair value of what is not. If the final milestone is £8,000 and the outstanding snags would cost £600 to put right, releasing £7,400 and holding £600 is proportionate. Withholding the full £8,000 is not, and a court would take the same view.

This is the single best de-escalation tool at the end of a project, because it removes the all-or-nothing stakes. The builder's cash flow is largely restored, which is what gets vans back on your drive, and the held amount now matches the size of the actual problem. On platforms like Renopay, the final milestone is funded before the closing stage begins, so the builder can see the money exists, and it is released as soon as the work is signed off. It can take up to a day to reach the builder's bank. Client funds are held by OPP, an FCA-authorised electronic money institution. Neither side can touch the funds in the meantime, which takes the trust question out of the final stretch. Builders can see how the same structure protects their side at renopay.co.uk/builders.

Independent assessment as the backstop

If the two of you cannot agree whether an item is done, defective or ever in scope, an independent expert opinion settles it faster and cheaper than solicitors. A RICS surveyor can inspect the disputed items and give a professional view on whether the work meets the specification and what any remedy should cost. For a dispute measured in hundreds or a few thousand pounds, a fixed-fee expert assessment is a far better outcome than the year of correspondence a legal route usually means. Agreeing upfront, ideally in the contract, that an independent assessment will be the tiebreaker removes the incentive for either side to dig in.

Close the project the way it should end: one list, a fair window, money released for finished work. Ask your builder to set it up on Renopay to run your milestones, including the final one, through milestone-based payment protection, with an independent RICS-qualified surveyor as the backstop (each side secures half the fee).

Frequently asked questions

Can I withhold the final payment from my builder for snagging?

You can withhold a proportionate amount reflecting the realistic cost of fixing the outstanding snags, but withholding the entire balance over minor items puts you in the wrong. Put the list, your costing and the amount held in writing, and pay the undisputed portion.

What is a reasonable time for a builder to fix snags?

Around two weeks is reasonable for a typical domestic snag list, extended where parts or materials need ordering. Agree the window in writing at the walkthrough rather than leaving it open-ended.

What is practical completion?

Practical completion is the point at which the works are finished and usable apart from minor defects and outstanding snags. It usually triggers the final stage of payment, with any snagging amount held until the agreed list is closed out.

Can I refuse to pay my builder for poor work?

You can withhold a proportionate amount reflecting the cost of putting the defective work right, after giving the builder a reasonable chance to fix it, which the Consumer Rights Act 2015 expects. Refusing to pay the entire bill over limited defects puts you in breach of contract.

How much money can I hold back from a builder?

An amount that matches the realistic cost of remedying the specific defects, ideally supported by an independent estimate or surveyor’s report. Pay the undisputed balance and set out the held amount and its basis in writing.

Can a builder take me to court for not paying?

Yes. A builder can bring a county court claim for the unpaid amount plus any contractual interest, and claims under £10,000 in England and Wales go through the small claims track. Proportionate withholding, documented defects and a written offer to release on completion of repairs are your defence.