It is one of those scenarios most people never consider when they sign a building contract. You have done your research, agreed a price, work has started, and then one day the phones go quiet. Nobody turns up on site. And you find out your contractor has gone into administration.
It is more common than you might think. Construction consistently accounts for more insolvencies than any other sector in England and Wales. In the 12 months to March 2026, 3,827 construction firms entered insolvency according to the Insolvency Service, representing 16% of all business failures despite the sector making up just 14% of registered UK companies. That is not a small number.
This guide explains what actually happens when a builder becomes insolvent during a new build, what your options are, what protection you might have, and most importantly what you can do before you start to make sure you are not left exposed.
Why Construction Companies Fail
Understanding why builders go bust helps you spot warning signs early. The reasons are almost always the same.
Cash flow problems
Construction is a cash-hungry industry. Materials need to be paid for, wages need to go out every week, and subcontractors need to be paid on time. If a contractor is juggling multiple projects and one goes over budget or a client delays payment, the knock-on effect can collapse the whole business surprisingly quickly. A company can appear perfectly healthy on paper while quietly running out of money in practice.
Fixed-price contracts signed at the wrong time
Many contractors signed fixed-price contracts during periods of lower costs and are now building at a loss because material and labour prices have risen significantly. The margin that looked reasonable at tender is gone by the time the work starts. This has been a significant driver of construction insolvencies since 2022 and the pressure has not fully eased.
Overextension
Some contractors take on more work than they can manage. They use cash from your project to fund another one, and when that other project hits problems, yours suffers. This is sometimes called a Ponzi-style business model, though that makes it sound more deliberate than it usually is. Often it is just poor financial management compounding until something breaks.
Early Warning Signs to Watch For
A builder does not usually go from fine to insolvent overnight. There are almost always signals beforehand if you know what to look for.
- Slow or erratic payments to subcontractors. If subbies are grumbling about not being paid, that is a significant red flag. They will walk off site before you know there is a problem.
- Requests for large upfront payments outside the agreed schedule. If a contractor suddenly needs a big payment early, they may be using your money to cover other commitments.
- Deliveries of materials slowing down or stopping. A builder in financial trouble will often have their credit with suppliers cut off.
- Unexplained gaps in the work programme. If the site goes quiet without explanation, find out why.
- Evasive answers about the programme or finances. Trust your instincts. If your contractor stops giving you straight answers, push harder.
- County Court Judgements against the company. You can check these for free through the
- County Court Judgements against the company. Check the Registry Trust for any CCJs registered against your contractor. This costs a few pounds and can tell you a lot.
If you are concerned about your contractor’s financial health, act early. It is far easier to deal with a shaky contractor who is still trading than to deal with an administrator after the business has collapsed.
What Happens When a Builder Goes Into Administration
When a business enters administration or liquidation, an insolvency practitioner takes control. From that point, your relationship changes completely. You are no longer dealing with your contractor. You are dealing with someone whose job is to recover money for creditors, not to finish your house.
Your contract is suspended
The building contract effectively goes into suspension. The insolvency practitioner will assess whether completing your project is financially viable for the creditors. In most cases it will not be, and they will terminate the contract.
You become an unsecured creditor
Any money you have paid that has not been matched by completed work puts you in the queue of unsecured creditors. In practice, unsecured creditors recover very little in most construction insolvencies. HMRC, banks, and secured lenders come first. Homeowners without insurance protection often recover nothing.
Materials on site may not be yours
This catches people out. Materials sitting on your site may not legally belong to you if they have not been paid for or if ownership has not formally transferred. The insolvency practitioner may be entitled to recover them. Check your contract. A well-drafted contract will include provisions that transfer ownership of materials to you when they are delivered to site and paid for.
Subcontractors may have claims over the work
If subcontractors have not been paid by your main contractor, they may place liens or claims over work they have completed. This can complicate your ability to bring in a new contractor to finish the job.
Do not make any further payments once you know your contractor is in financial difficulty. Contact a solicitor immediately and do not agree to anything the insolvency practitioner proposes without legal advice. Their job is to recover money for creditors, not to protect your interests.
What Protection Do You Have?
How protected you are depends almost entirely on what you put in place before work started. Here is what can help.
A structural warranty or latent defects insurance
A structural warranty is one of the most important protections for a new build project. The best known provider is NHBC with their Buildmark warranty, but there are other providers including Premier Guarantee, LABC Warranty, and Checkmate. These policies provide cover in three stages.
| Stage | What Is Covered |
| Exchange to completion | If the builder becomes insolvent before completing the build, the warranty covers your deposit, typically up to 10% of the purchase price or £100,000. |
| First two years after completion | The builder must fix defects that do not meet the warranty provider’s technical standards at their own cost. If the builder is insolvent, the warranty provider steps in. |
| Years three to ten | Insurance cover for major structural defects including foundations, roof structure, and external walls. Non-structural issues are generally excluded at this stage. |
Not every new build automatically has a structural warranty. If you are commissioning a bespoke new build directly with a contractor, you need to arrange this yourself before work starts. Many mortgage lenders will require a structural warranty on a new build before they will lend, so this is not optional if you are financing the project.
Your building contract
A well-drafted contract protects you in several ways. The JCT Minor Works or Homeowner contracts are standard for residential new builds and include provisions around payment schedules, termination on insolvency, ownership of materials, and retention. Key things to check:
- Payments should be made in arrears against completed work, not upfront.
- Retention: typically 5% of each payment is held back until practical completion and released after a defects period. This gives you leverage and some financial protection.
- Ownership of materials on site should transfer to you on delivery and payment, not when the contractor decides.
- Termination provisions should clearly allow you to terminate and bring in another contractor if the original one becomes insolvent.
Section 75 of the Consumer Credit Act
If you paid for any part of the project by credit card and the amount was between £100 and £30,000, your card provider is jointly liable with the contractor for the goods or services not delivered. This is one of the most underused protections available to homeowners.
It does not cover bank transfers or debit cards. But for deposits, material purchases, or stage payments made by credit card, it can be a significant backstop if your contractor fails.
Site insurance
A contract works or site insurance policy covers the physical build against damage, theft, and unforeseen events during construction. If your contractor holds this policy and goes into administration, the policy may lapse. Make sure you understand who holds the site insurance and what happens to it if the contractor becomes insolvent. On larger projects, consider taking out your own employer’s liability policy that sits alongside the contractor’s.
What to Do Immediately If Your Builder Goes Bust
If you find out your contractor has entered administration or liquidation, there is a clear order of priority.
1. Stop all payments immediately.
Do not pay anything further until you have legal advice. Do not let anyone pressure you into making payments to the insolvency practitioner or to subcontractors without understanding exactly what you are agreeing to.
2. Secure the site.
If work has stopped, secure the site against theft and vandalism. Check your insurance covers the period when no contractor is on site. Notify your insurer immediately.
3. Get all documents off site.
Retrieve all drawings, specifications, building control documents, structural calculations, warranties, test certificates, and any other paperwork associated with the project. If these are held by the contractor, request them formally in writing now. You will need them to appoint a new contractor.
4. Document the state of the works.
Photograph and video the site thoroughly. Record exactly what has been completed, what has been partially completed, and what materials are on site. You will need this to negotiate with the insolvency practitioner and to brief a new contractor.
5. Contact your structural warranty provider.
If you have a structural warranty in place, notify the provider immediately. They will advise on what your policy covers and what steps they can take.
6. Get legal advice.
Construction insolvency is complex. The insolvency practitioner will be experienced at managing these situations in the interests of creditors. You need someone in your corner. A solicitor with experience in construction disputes can advise on your rights, help you recover documents and materials, and guide you through the process of formally terminating the contract and appointing a replacement. The Law Society’s solicitor search lets you filter by construction law specialism.
7. Get the works assessed before appointing anyone new.
Before you bring in another contractor, get an independent assessment of the works completed so far. You need to know what has been done properly, what needs rectifying, and what is genuinely incomplete. Do not rely on the new contractor’s assessment alone because they have an incentive to find more problems.
Finishing the Project: What to Expect
Taking over a half-built project is almost always more expensive and more complicated than starting from scratch. Here is why.
- Every new contractor will price in a risk premium for inheriting someone else’s work. They cannot be certain what is hidden in the structure and they will not want to take liability for work they did not do.
- Subcontractors who worked for the original contractor may be owed money and may be reluctant to return to site or may have moved on to other projects.
- Building control will need to inspect and sign off stages that were not formally inspected during the original build. This can require opening up work.
- The programme will almost certainly be longer than the original timeline suggested. Budget for this in terms of both cost and accommodation.
Get at least three quotes for completing the works. Make sure each contractor quotes against the same specification and the same scope of remaining works. The gap between quotes on a project like this can be very wide.
How to Protect Yourself Before You Start
The best time to deal with contractor insolvency risk is before you sign a contract. These steps cost very little and can save you enormously.
| Protection | What It Does |
| Structural warranty | Covers deposits, defects in the first two years, and structural issues for ten years. Essential for any new build. |
| JCT contract with proper payment provisions | Stage payments in arrears, retention, clear termination rights, and material ownership clauses all in one document. |
| Credit card for stage payments where possible | Section 75 protection up to £30,000 per transaction. |
| Company health check before appointing | Check Companies House for accounts, director history, and any County Court Judgements before you sign anything. |
| Site insurance in your own name | Ensures cover does not lapse if the contractor becomes insolvent. |
| Independent project manager or quantity surveyor | Verifies work before you release each stage payment so you are not paying for work that has not been done. |
The single most effective protection is a payment schedule that keeps your exposure low at any given point. If you never owe your contractor more than one or two stages of work at any time, the financial impact of an insolvency is manageable. If you have paid for three months of work in advance, it is not.
Choosing the Right Contractor Matters
Most of what is in this guide can be avoided by choosing a contractor with a genuine track record, proper financial backing, and a transparent way of working. We work across all 33 London boroughs and are happy to talk about how we structure our contracts, our payment schedules, and our approach to project management. Get in touch and we will give you a straight answer.
DEVELOPER NOTES
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External links: BCIS insolvency data (bcis.co.uk), NHBC Buildmark (nhbc.co.uk), JCT contracts (jctltd.co.uk), Registry Trust (registry-trust.org.uk), Law Society solicitor search (solicitors.lawsociety.org.uk)
Suggested meta description: Construction is the UK’s highest-insolvency sector. Here is what actually happens if your builder goes bust mid project, what your rights are, and how to protect yourself before work starts.
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Consider adding a ‘Last updated: July 2026’ note near the top given the insolvency statistics are current
Frequently Asked Questions
Can I get my money back if my builder goes bust?
It depends on what protection you have in place. If you have a structural warranty with insolvency cover, you may recover your deposit up to the policy limit. If you paid by credit card, Section 75 of the Consumer Credit Act may allow you to claim back from your card provider. If you have neither, you will be an unsecured creditor in the insolvency and the realistic expectation is that you recover very little, sometimes nothing. This is why protection needs to be arranged before work starts, not after something goes wrong.
What is a structural warranty and do I need one?
A structural warranty is an insurance-backed guarantee that covers a new build against structural defects for ten years and provides insolvency protection during construction. The best known provider is NHBC with their Buildmark policy, but there are others. Most mortgage lenders require a structural warranty on a new build property before they will lend. Even if you are not using a mortgage, it is strongly advisable. Our guide to structural warranties covers this in more detail.
What happens to materials on site if my builder goes bust?
Materials on site may not legally belong to you, even if you have paid for them, unless your contract specifically transfers ownership when they are delivered and paid for. The insolvency practitioner may have a right to recover materials that were supplied on credit to your contractor and not yet paid for. This is one of the most important clauses to check in your building contract before work starts.
Can I just hire another contractor to finish the job?
You can, but you should not rush into it. Before appointing anyone new, get an independent assessment of the works completed so far, retrieve all documentation from the original contractor, formally terminate the original contract, and get multiple quotes. A new contractor will always price in a risk premium for inheriting someone else’s work, so expect the cost to finish to be higher than the remaining balance in the original contract would suggest.
What does a JCT contract protect me against?
A JCT contract sets out the rights and obligations of both parties clearly. For insolvency protection, the key provisions are: stage payments in arrears rather than upfront, retention withheld until completion, ownership of materials transferred to you on delivery and payment, and a right to terminate and engage another contractor if the original one becomes insolvent. The JCT Homeowner contract is designed specifically for projects where a homeowner is commissioning work directly from a contractor.
Should I check my contractor’s financial health before signing?
Yes. Check Companies House for the company’s filed accounts, director history, and any outstanding charges or dissolution notices. Check the Registry Trust for County Court Judgements. Ask for references from recent clients and follow them up. A contractor with nothing to hide will welcome this scrutiny.
