What To Do If A Builder Misses A Deadline

Priya owns a small cafe in Manchester. She hired a builder to finish a refurbishment by 1 May, ready for a bank holiday launch. By mid-May, the kitchen still isn't signed off, the flooring is half done and the builder keeps saying, we'll be there next week.

If you're in a similar position, it's frustrating because the delay usually isn't just inconvenient. It can affect opening dates, rent, staff rosters, supplier deliveries, bookings and cash flow.

The right next step depends heavily on your contract. A missed deadline can give you strong rights, but only if you handle notices, evidence and any extension requests carefully.

What Should You Do First If Your Builder Misses The Deadline?

You should first check the contract, gather evidence and put your concerns in writing before you threaten termination or withhold money.

When a project is delayed, it's tempting to send a sharp email or bring in another contractor straight away. Sometimes that's the right commercial move, but it can cause problems if your contract has a notice process or if the builder is legally entitled to more time.

Your First Steps

1. Find the signed contract and any contract variations. Look for the completion date, programme, delay clause, extension of time process, payment terms and termination rights.
2. Check what the deadline actually means. Some contracts have a fixed completion date. Others say the builder will use reasonable endeavours, or refer to an indicative programme.
3. Collect the records. Save emails, texts, photos, site meeting notes, delivery records, invoices, variation instructions and any messages about access to the site.
4. Ask for a written update. Request the reason for the delay, the current programme, what has been completed and what needs to happen next.
5. Send any notice the contract requires. If the contract says notices must go to a certain address or email, follow that process carefully.

Your message doesn't need to be aggressive. A clear written record is usually more helpful than a heated exchange. For example, you might say that the agreed completion date has passed, the works remain incomplete, and you need a revised programme by a specific date.

If you later need to claim losses, negotiate a discount or start adjudication, those records will matter.

Does Your Contract Give You Delay Rights?

It depends on what the contract says about completion, delay and remedies.

In England and Wales, construction contracts can be very formal, such as JCT or NEC contracts, or very simple, such as a quote accepted by email. Even a short email chain or heads of terms can form a binding contract if it covers the key terms, but vague wording makes delay disputes harder.

Start by looking for these parts of your agreement:

• The scope of works: what the builder agreed to do.
• The completion date: whether there's a fixed date, a number of weeks, milestones or only an estimated date.
• Delay events: what circumstances allow the builder more time, such as variations, late client decisions, force majeure, unusually bad weather or supply issues.
• Notice requirements: whether the builder had to notify you of delay within a set time.
• Liquidated damages: whether the builder agreed to pay a set amount for each day or week of delay.
• Termination rights: when you can end the contract and what steps you need to take first.
• Dispute process: whether the contract requires negotiation, mediation, adjudication or another process.

If the contract doesn't have a clear completion date, you may still have rights. The builder may be required to complete within a reasonable time. What is reasonable depends on the size of the project, site conditions, availability of materials, variations and what both sides knew when the contract was agreed.

The weaker the paperwork, the more the dispute turns on evidence. That's why photos, messages and meeting notes are so useful.

Can The Builder Claim An Extension Of Time?

Yes, the builder may be able to claim an extension of time if the contract allows it and the delay was caused by a recognised delay event.

An extension of time isn't automatically a free pass. It usually requires the builder to show what caused the delay, how much time was lost and whether they followed the contract's notice process.

Common extension of time arguments include:

• you asked for extra works or design changes
• you were late giving access to the site
• you delayed approving drawings, samples or materials
• there were unexpected site conditions
• specialist materials were unavailable
• exceptionally bad weather affected the works
• another contractor or landlord-controlled service caused the delay

There's also a practical legal issue called the prevention principle. If your actions caused the builder to miss the completion date, and the contract doesn't properly deal with extensions of time, the original completion date may become difficult to enforce. People sometimes describe this as time becoming at large, meaning the builder may need to complete within a reasonable time rather than by the original fixed date.

That doesn't mean the builder can drift forever. It does mean you should be careful before claiming the full delay is the builder's fault.

A fair way to approach this is to separate delays into categories:

• Builder-caused delay: poor resourcing, late subcontractors, avoidable errors or slow progress.
• Client-caused delay: late decisions, changes to the brief or failure to provide access.
• Neutral delay: events neither side could reasonably control, depending on the contract wording.

Once you understand the cause, you can decide whether to reject the extension request, accept part of it or negotiate a new date.

Can You Claim Compensation For Building Work Delays?

Yes, you may be able to claim compensation, but the amount and method depend on your contract and the losses you can prove.

There are two main routes: liquidated damages and general damages.

Liquidated Damages

Liquidated damages are a pre-agreed amount the builder must pay if the works are late. For example, your contract might say the builder pays £1,000 for each week beyond the completion date, capped at 10% of the contract price.

For commercial contracts, liquidated damages can be very useful because you don't have to prove the exact loss week by week. But the clause still needs to be drafted carefully. If the amount is out of all proportion to your legitimate business interest in timely completion, the builder may argue it's an unenforceable penalty.

General Damages

If there's no liquidated damages clause, you may still claim actual losses caused by the delay. These could include:

• extra rent or storage costs
• additional professional fees
• costs of rearranging deliveries or fit-out work
• lost profit from a delayed opening, if you can prove it properly
• reasonable costs of bringing in another contractor, if the contract allows or the breach is serious enough

You also need to show you took reasonable steps to reduce your losses. For example, if moving stock to temporary storage would have reduced the loss, you may be expected to do that rather than let costs build up unnecessarily.

A Worked Example

Say Priya's cafe refurbishment contract is £80,000. It says completion is due by 1 May and liquidated damages are £1,000 per week, capped at £8,000.

The builder finishes 4 weeks late. Priya asked for an extra tiling variation that genuinely added 2 weeks. The builder had no good reason for the other 2 weeks.

In that situation, Priya might accept a 2 week extension of time, then claim £2,000 in liquidated damages for the remaining 2 weeks of builder-caused delay. If she simply demanded £4,000 without accounting for her own variation, the dispute would be harder to resolve.

Be careful about deducting compensation from amounts due to the builder. Many construction contracts are affected by the Housing Grants, Construction and Regeneration Act 1996, often called the Construction Act. If a payment application has been made, you may need to serve the correct payment notice or pay less notice before withholding money. Getting that wrong can mean you have to pay now and argue later.

Should You Terminate Or Negotiate A New Date?

You should only terminate if the contract gives you a clear right to do so, or the delay is serious enough to justify ending the contract at common law.

Termination can feel like the cleanest option when you're fed up, but it's one of the riskier moves. If you terminate when you don't have the right to, the builder may argue that you breached the contract and claim their own losses.

Before you terminate, ask these questions:

• Does the contract say time is of the essence?
• Is there a notice to remedy process?
• Has the builder missed a fixed completion date or only an indicative programme?
• Has the builder abandoned the site or are they still progressing the works?
• Have you contributed to the delay in any way?
• Can the delay be fixed with a realistic recovery programme?

Often, the better first step is a structured negotiation and contract amendment. You might agree:

• a revised completion date
• weekly progress reporting
• priority milestones, such as getting the kitchen operational first
• a discount, credit or agreed liquidated damages deduction
• a cap on further delay
• the right to bring in others for specific unfinished items

If the builder is unresponsive or the delay is causing serious loss, you may need to escalate. For many commercial construction disputes, the Construction Act gives either party a right to refer a dispute to adjudication at any time. Adjudication is designed to be fast, with a decision often due within 28 days of referral, subject to permitted extensions.

Adjudication isn't the right fit for every issue, but it can be a practical route where payment, delay or entitlement to an extension of time is holding the project up.

What Should A Construction Delay Clause Include?

A good construction delay clause should clearly explain the completion date, when extra time is allowed and what happens if the builder is late.

Careful clause drafting matters because delay clauses are one of those areas where a short template can miss the parts that actually matter. A clause that works for a small office repaint may not work for a staged restaurant fit-out with landlord approvals, specialist equipment and several contractors on site.

Here is a fill-in outline you can use to check what your contract should cover. This isn't a finished clause, and a lawyer should tailor it before you use it.

1. Project Dates: state the start date, completion date and any milestone dates.
2. Scope Link: connect the deadline to a clear scope of works and drawings or specifications.
3. Extension Events: list events that may justify extra time, such as variations, late access, approvals, extreme weather or force majeure.
4. Notice Process: say when and how the builder must notify you of a delay, and what evidence they must provide.
5. Assessment Process: explain how you'll assess the extension request and whether partial extensions can be granted.
6. Updated Programme: require a revised programme showing how the builder will recover or manage the delay.
7. Liquidated Damages: set a daily or weekly amount that reflects your likely loss and business need for timely completion.
8. Cap Or Limit: state any cap on delay damages, if commercially agreed.
9. Payment Deductions: align any deduction rights with the contract payment process and Construction Act notice requirements.
10. Termination Rights: set out when delay becomes serious enough to suspend, step in or terminate.

If your project involves a commercial lease, also check your lease, agreement for lease and key supplier agreements. You may have deadlines for rent commencement, fit-out approvals, trading obligations or landlord works. A delay by your builder can quickly become a problem with your landlord, so it's worth checking both contracts together.

Key Takeaways

• If your builder misses a deadline, start with the contract, evidence and written notices.
• A fixed completion date gives you a stronger position than an estimated programme, but the exact wording matters.
• The builder may be entitled to an extension of time if a recognised delay event caused the delay and they followed the notice process.
• Liquidated damages can make delay compensation much easier, but the amount needs to be commercially sensible.
• Don't terminate or withhold payment without checking your rights, especially where Construction Act payment rules may apply.
• A tailored delay clause can save a lot of stress when timing is critical to your opening date, lease or business plans.

If you'd like help with your construction contract, delay notices, extension of time issues or negotiating a practical remedy with your builder, you can reach us at 08081347754 or team@sprintlaw.co.uk for a free, no-obligations chat.