Common Delays Between Exchange and Completion

You've exchanged contracts and the sale is legally binding. Completion day is set. In most transactions, the period between exchange and completion passes without incident. But when something does go wrong, it can be stressful, expensive, and confusing.

This guide covers the most common delays that occur between exchange and completion, explains your legal position under the Standard Conditions of Sale used in virtually all residential transactions in England and Wales, and sets out practical steps you can take to protect yourself. For a full overview of what normally happens during this period, see our guide to what happens between exchange and completion.

Why delays happen after exchange

Exchange of contracts fixes the completion date and makes both parties legally bound. However, several things still need to go right on or before completion day for the transaction to complete smoothly. The buyer's mortgage lender must release funds. The CHAPS payment must be processed. Every link in the chain must complete in sequence. You must vacate the property and hand over the keys.

A failure at any one of these points can delay completion. Although serious delays are uncommon, understanding what can go wrong helps you prepare and respond quickly if a problem arises.

The most common causes of delay

1. Mortgage drawdown problems

One of the most frequent causes of delay is the buyer's mortgage lender failing to release funds on time. The buyer's solicitor typically requests the mortgage advance a few days before completion, but problems can arise if:

• The lender requires additional documentation that was not provided in time
• There is an administrative error in the mortgage offer or drawdown instructions
• The lender's internal processes are slower than expected, particularly at busy times of year
• The mortgage offer has expired and needs to be reissued, which can happen if the conveyancing process has taken longer than anticipated

Most mortgage drawdown delays are resolved within hours. The buyer's solicitor will chase the lender directly, and the funds are usually released the same day. However, if the problem relates to a fundamental issue with the mortgage offer, completion may need to be postponed by several days. For more on how mortgage problems affect house sales, see our guide on why house sales fall through.

2. Chain delays

If you are part of a property chain, completion depends on every transaction in the chain completing on the same day. A delay anywhere in the chain affects everyone above and below. Common chain-related delays include:

• A buyer at the bottom of the chain having last-minute mortgage problems
• A seller further up the chain not being ready to vacate
• One solicitor in the chain being slow to send funds onward after receiving them
• A lender in the chain releasing funds late in the day, pushing completion past the cut-off time for CHAPS payments

Chain delays on completion day are one of the most stressful aspects of the process. If your sale is chain-free, you avoid this risk entirely. For tips on reducing chain-related delays, see our guide on how to speed up conveyancing as a seller.

3. CHAPS payment errors

The purchase funds are transferred on completion day using the CHAPS (Clearing House Automated Payment System) same-day electronic transfer. While CHAPS is highly reliable, errors can occur. The most common problems are:

• Incorrect bank details: If the buyer's solicitor sends funds to the wrong account, the payment must be recalled and resent. This can take several hours or even days to resolve.
• Late submission: CHAPS payments must be submitted before the cut-off time (usually 3pm for solicitors). If a solicitor misses this deadline, the payment cannot be processed until the next working day.
• Fraud checks: Banks may flag large payments for additional fraud screening, particularly if the bank details have been changed recently. This can delay the payment by several hours while the bank verifies the transaction.

4. Solicitor delays

Occasionally, a solicitor in the chain is slow to act on completion day. This might be because they are handling multiple completions simultaneously, have a staffing issue, or have not prepared properly in advance. Common solicitor-related delays include:

• Failing to request the mortgage advance in time
• Not having the CHAPS details ready for the payment
• Delays in confirming receipt of funds and authorising key release
• Not having prepared the completion statement or transfer deed in advance

If you suspect your solicitor is causing delays, raise the issue directly and ask for a clear timeline. If you are not yet at the completion stage, our guide on how long conveyancing takes explains what to expect at each stage and how to keep things on track.

5. Removal firm cancellation or delays

If your removal firm cancels or arrives late on completion day, you may not be able to vacate the property in time. This puts you in breach of contract, even though the delay is not directly your fault. To protect yourself:

• Book your removal firm as soon as you exchange contracts and confirm the booking in writing
• Ask the firm for an early morning start so there is a buffer in case of problems
• Have a backup plan, such as a self-hire van or friends who can help at short notice
• Start moving non-essential items to your new property or a storage unit in the days before completion

6. Property damage before completion

Under the Standard Conditions of Sale (6th Edition), the risk in the property remains with the seller until completion. If your property suffers damage between exchange and completion \u2014 from a burst pipe, storm, fire, or any other cause \u2014 you may need to delay completion to arrange repairs or negotiate a price reduction with the buyer.

This is why it is essential to keep your buildings insurance in place until your solicitor confirms that completion has taken place and funds have been received. If damage occurs, notify your solicitor and your insurer immediately.

Your legal rights when completion is delayed

The Standard Conditions of Sale used in virtually all residential property transactions in England and Wales set out clear remedies when one party fails to complete on time.

Penalty interest

Under condition 7.2, the party in default must pay the other side interest on the purchase price at the contract rate, which is defined as the Law Society interest rate (typically 4% above the Bank of England base rate). Interest accrues for each day that completion is late.

For example, on a \u00a3350,000 property with a contract rate of 4% above the base rate, if the base rate is 4.5%, the daily penalty interest would be approximately \u00a370.96 per day (8.5% \u00f7 365 \u00d7 \u00a3350,000). This adds up quickly and provides a strong incentive for the defaulting party to complete as soon as possible.

Notice to complete

If the delay continues beyond the completion date, the innocent party can serve a notice to complete under condition 6.8. This gives the defaulting party 10 working days to complete the transaction. Serving a notice to complete makes time "of the essence", meaning the deadline is absolute.

If the defaulting party still fails to complete after the notice period expires:

• If the buyer defaults: The seller can rescind the contract, forfeit the buyer's deposit (usually 10% of the purchase price), and resell the property. The seller may also claim damages for any additional losses.
• If the seller defaults: The buyer can rescind the contract, recover their deposit with accrued interest, and claim damages including the cost of finding and purchasing an alternative property.

Specific performance

In addition to rescission, either party can apply to the court for an order of specific performance, which compels the defaulting party to complete the transaction. This is a court order rather than a contractual remedy, and it is typically used when the innocent party would prefer the sale to go ahead rather than rescind. Specific performance claims can be slow and expensive, so they are relatively rare in practice.

How to minimise the risk of delays

While you cannot eliminate all risk, there are practical steps sellers can take to reduce the likelihood of delays between exchange and completion.

What to do if completion is delayed on the day

If completion day arrives and there is a problem, here is what to do step by step:

1. Contact your solicitor immediately. They will find out the cause of the delay and advise you on your options. Do not rely on the estate agent for legal advice.
2. Find out if the delay is temporary or serious. A mortgage drawdown running a few hours late is very different from a buyer who cannot obtain funds at all. Your solicitor should be able to assess this quickly.
3. Do not hand over the keys. Never release keys or allow the buyer access to the property until your solicitor confirms that the full purchase funds have been received and cleared.
4. Consider your position if you are in a chain. If the delay on your sale means you cannot complete your onward purchase, notify your own solicitor so they can inform the seller above you in the chain.
5. Keep records of any additional costs. If the delay causes you to incur costs such as hotel bills, storage charges, or extra removal fees, keep receipts. You may be entitled to claim these from the defaulting party.
6. Discuss serving a notice to complete. If the delay looks like it will extend beyond the completion day, ask your solicitor about serving a notice to complete. This is a serious step that should not be taken lightly, but it protects your position.

For a detailed walkthrough of what normally happens on the day itself, see our guide to what happens on completion day for sellers.

Delayed completion and the chain effect

In a chain transaction, a delay at any point ripples through to every other party. If the buyer at the bottom of the chain cannot complete, nobody above them can complete either because each purchase depends on the funds flowing up from the transaction below.

This means you may find yourself unable to complete your sale even though you have done everything right. In this situation:

• The party who is actually in default is liable for the penalty interest and costs across the chain
• Your solicitor will communicate with the other solicitors in the chain to establish what has gone wrong and when it is likely to be resolved
• If the delay extends overnight, you may need to stay in your property or arrange temporary accommodation
• In the worst case, if the chain breaks down entirely, each party has remedies against the party they are in contract with

The risk of chain delays is one reason why some sellers prefer to accept offers from chain-free buyers or cash buyers, even if the offer is slightly lower. A chain-free sale removes the single biggest source of unpredictability in the process.

When a delay becomes a failure to complete

Most delays between exchange and completion are resolved within hours or days. A genuine failure to complete \u2014 where one party is unable or unwilling to complete at all \u2014 is rare but does happen. The most common reasons include:

• The buyer's mortgage offer is withdrawn (for example, because they have lost their job or the lender discovers an issue with the property)
• The buyer runs out of funds and cannot bridge the gap
• The seller discovers a title issue that prevents transfer
• Severe property damage makes the property unsuitable

If your buyer genuinely cannot complete, your solicitor will guide you through the process of serving a notice to complete, and if necessary, rescinding the contract and forfeiting the deposit. You would then need to put the property back on the market. This is disruptive, but the deposit provides meaningful financial protection.

Preparing properly reduces risk

The best way to avoid delays between exchange and completion is thorough preparation well before exchange takes place. Sellers who have their legal paperwork in order, their property information forms completed accurately, and their solicitor well-instructed from the outset are far less likely to encounter problems at this late stage.

Pine helps sellers get sale-ready before their property is even listed, by completing the legal forms, organising documents, and ordering property searches upfront. When the groundwork is done early, the period between exchange and completion becomes a straightforward formality rather than a source of anxiety.

Sources and further reading

• The Law Society \u2014 Standard Conditions of Sale (6th Edition), conveyancing protocol, and property information forms (lawsociety.org.uk)
• HM Land Registry \u2014 Title registration, TR1 transfer deed guidance, and property ownership records (gov.uk/government/organisations/land-registry)
• Solicitors Regulation Authority (SRA) \u2014 Regulation of solicitors, client account rules, and conduct standards (sra.org.uk)
• Council for Licensed Conveyancers (CLC) \u2014 Regulation of licensed conveyancers and conveyancing standards (clc.gov.uk)
• Bank of England \u2014 Current base rate and CHAPS payment system information (bankofengland.co.uk)
• Gov.uk \u2014 Guidance on buying and selling property, consumer rights, and dispute resolution (gov.uk)
• HomeOwners Alliance \u2014 Consumer guidance on exchange, completion, and what to do when things go wrong (hoa.org.uk)
• Propertymark \u2014 Estate agent professional body, market data and best practice guidance (propertymark.co.uk)

Related guides

• Average Time from Offer to Exchange in the UK
• What Happens If Completion Is Delayed?

Frequently asked questions