Notice to Complete: What Does It Mean and What Happens Next?

Delays in completing a property sale can quickly become a big problem. If one party is not ready, the other can issue a notice to complete, which sets a final deadline to finish the deal.

If you miss that deadline, the consequences can be serious. It can include extra costs, interest, loss of deposit, or ending the contract.

This article explains when a notice can be served, how long you have, what penalties may apply, and what you can do next.

What is a notice to complete?

A notice to complete is a formal warning sent if the agreed completion date is missed. It gives the late party one final deadline to complete the sale.

Completion usually takes place when the seller’s solicitor gets the money for the property and ownership passes to the buyer.

If completion is late, the contract does not end right away. Time is not yet of the essence.

A valid notice to complete changes that. It sets a new deadline, usually 10 working days, and makes time of the essence. If the late party still does not complete in time, the other side can usually end the contract.

When can a notice to complete be served?

A notice to complete can usually be sent only after the completion deadline has passed.

For many property purchases, this deadline is 2pm on the completion day, but your solicitor should check your contract for the exact time.

Either the buyer or seller can serve notice, but only if they are ready, able and willing to complete. If they were not ready earlier, they can serve it later once they are.

Sometimes, a notice to complete may not be valid. This could happen if:

• It was sent too early
• It was sent in a way the contract does not allow
• The person sending it was not actually ready to complete

If the notice is invalid, the sender may not be able to end the contract or keep the deposit yet. This does not automatically mean your deposit is returned. Ask your solicitor to check how, when and by whom the notice was served.

How long do you have after a notice to complete?

Under the Standard Conditions, you usually have 10 working days to complete after receiving a notice to complete. The day you receive the notice does not count.

Working days normally mean Monday to Friday, excluding bank holidays, Christmas Day, and Good Friday. So, if there are no bank holidays, 10 working days is roughly two calendar weeks.

For example, if you receive the notice on Monday 2 November 2026, the 10 working days start on Tuesday 3 November, and the deadline would be Monday 16 November 2026.

The date the notice is treated as received can also depend on how it was sent. For example:

• If it arrives after 4 pm, or on a weekend, it is usually treated as received on the next working day
• If it is sent by first-class post, it is usually treated as received on the second working day after posting
• Email only counts if the contract allows notices by email

Your contract may also change the usual 10-working-day period. Some transactions, such as repossession sales, may give you less time, so it is important to ask your solicitor to check the exact deadline.

What does a late completion cost you straight away?

Some costs start to add up before the second, final deadline.

First, you might need to pay a bigger deposit. If you paid less than 10% when you agreed to buy, you now have to top it up to 10% immediately.

Second, you pay daily interest from the original completion date. This is not a fine, just interest set by the contract. If both sides are late, the days are balanced against each other.

The daily interest is usually 4% above a bank’s base rate. Many contracts use the Bank of England rate. In September 2026, that makes the rate 7.75% per year.

Here is a simple example:

• Price of property: £250,000
• Deposit already paid: £25,000
• Amount you still owe: £225,000
• Contract rate: 7.75% per year

To work out the late fee for 2 weeks:

1. £225,000 × 7.75% = £17,437.50 (yearly compensation)
2. £17,437.50 ÷ 365 = about £48 (daily compensation, rounded)
3. £47.79 × 14 = £669 (total for 2 weeks)

So, if you are 2 weeks late, you would pay about £669 in late fees.

What happens if you still cannot complete?

If you still do not complete by the final deadline, the seller may be able to end the contract.

They may also be able to:

• Keep your deposit, including any interest earned on it
• Put the property back on the market
• Claim extra losses from you if they later sell for less

For example, if you agreed to buy the property for £250,000, but the seller later sells it to someone else for £220,000, the seller has lost £30,000.

If they still keep your £25,000 deposit, they may try to claim the remaining £5,000 from you, along with extra costs such as legal or selling fees.

A court can sometimes order a deposit to be returned, but that is uncommon, and you should not plan on it. A seller may also choose to wait and complete late if you pay the extra costs, but they do not have to.

What should you do if you receive a notice to complete?

If you receive a notice to complete, act straight away. 10 working days can pass quickly, especially if you need to arrange funds or sort out a mortgage issue.

Here is what you need to do:

1. Contact your solicitor right away, and confirm the exact deadline in writing.
2. Ask your solicitor to check that the notice is valid.
3. If you paid less than 10% of the purchase price at exchange, arrange to top up your deposit.
4. Ask for a short extension, but plan as if the seller will say no.
5. Start by looking at the quickest and lowest-cost ways to raise the money, such as chasing your mortgage offer, asking family for help, arranging a further advance, or selling another asset.
6. If none of these options will arrive in time, consider short-term finance.

If the seller is the one causing the delay, the position may be different. In that situation, a notice to complete could work in your favour by pressuring them to finish the sale.

Is a notice to complete different at an auction or on a new build?

The basic rules stay the same, but who sets the completion date differs each time.

Here is how it usually works:

Auctions

At a property auction, the sale is usually binding as soon as the hammer falls.

You then have a short time to complete. This is often around 20 business days, although some auction contracts allow 28 days.

Because this is a tight deadline, buyers usually arrange their finance before they bid. A standard mortgage may not be ready quickly enough.

New builds

With a new build, the developer usually decides the completion date once the property is ready.

This is often called completion on notice.

You would normally only receive a notice to complete if you miss that date.

Developer contracts can vary, so ask your solicitor to check your paperwork and confirm exactly what applies to you.

Compare a failed completion with bridging finance.

A bridging loan can help if you need to complete quickly and your longer-term funds are not ready.

It costs more than a standard mortgage. It can still be cheaper than losing the deposit and facing a damages claim.

Use the same £250,000 example, with £225,000 still to pay. The figures below assume a 3-month bridging loan at 1% per month plus a 2% arrangement fee:

Bridging is about speed and certainty, not cheapness. On these numbers, 3 months of bridging costs far less than losing the deal.

Timing still matters. A bridging loan needs checks, a valuation and solicitor work. If your mortgage is only a few weeks away, ask the seller for a written extension first.

If the notice deadline is real and the mortgage will not land in time, compare bridging against the cost of default before the 10 working days run out.

GoGoProp lends under Money Lending Licence No. 1341/2025.

Key takeaways

• In England and Wales, a notice to complete usually gives you 10 working days, not counting the day you receive it.
• It can be served only after the completion time has passed, and only by someone ready, able, and willing to complete.
• Compensation usually runs at the contract rate, often 4% above the base rate, from the original completion date.
• If your deposit was under 10%, you may need to top it up as soon as the notice arrives.
• If you miss the final deadline, the seller may end the contract, keep the deposit and claim further losses.
• A notice may be invalid if it was served too early, served incorrectly, or served by someone who could not complete it.
• Auctions, new builds and repossession sales often use different timetables.
• If you receive a notice, contact your solicitor immediately and confirm the deadline in writing.
• If funding is the problem, ask for an extension first if a few weeks will do. If it will not, price short-term finance against the cost of losing the deposit.

Frequently asked questions

1. Can a buyer serve a notice to complete?

Yes. Either party can serve one, as long as they are ready, willing and able to complete themselves. If the seller is the one causing the delay, a buyer's notice can put pressure on them to finish the sale.

2. What if the notice arrives while you are abroad?

It is sent to your solicitor, and that counts as sending it to you. Stay in close contact with your solicitor so you don't lose working days.

3. Can you still complete after the notice to complete deadline has passed?

Only if the seller agrees. After the deadline, the seller can end the contract, but they may still accept late completion if you pay extra costs.

4. Can the seller sell to someone else after serving a notice to complete?

They can only complete a new sale after the deadline, and the contract has ended. During the notice period, they can market the property but not finish a new deal.

5. How fast can a bridging loan be arranged to meet a notice to complete deadline?

It depends on the valuation, legal work and documents. It may be possible within a few weeks, or faster in straightforward cases, so act early.