What Happens Between Exchange and Completion? A UK Conveyancing Guide

Exchange can feel like the finish line, but it’s when the sale or purchase becomes legally binding, not when the keys change hands. If you’re wondering what happens between exchange and completion, both sides prepare for the agreed moving date while their conveyancers coordinate the money, paperwork and final checks. Knowing what you need to do, and what your conveyancer handles, makes this important stage easier to manage.

You’ll need to arrange practical details such as removals, packing and notifying utility providers, and respond promptly if your conveyancer requests information or funds. Your conveyancer coordinates the legal steps, including arranging mortgage funds where relevant and preparing a completion statement showing the money due. This guide explains what to expect after exchange, how to reduce the risk of avoidable delays and how completion day works, from the final payment to the release of the keys.

What happens between exchange and completion, and how binding is the deal?

Exchange of contracts commits the buyer and seller to the transaction under the contract’s terms. Completion is the later step that carries out that agreement: the purchase money is transferred and ownership passes. Exchange and completion are separate milestones, even when they are close together.

After exchange, the buyer’s conveyancer coordinates the funds needed for completion, while both sides finish relevant legal steps and prepare for the move. The exact work depends on the transaction. For an overview of the wider process and its key terms, see Conveyancing.

This exchange-and-completion sequence applies principally in England and Wales. Property purchase procedures differ elsewhere in the UK. Scotland, for example, uses a different process and terminology, so follow the guidance that applies to your jurisdiction.

What does exchange of contracts mean for a buyer or seller?

Once contracts are exchanged, neither party can simply treat the agreed sale as provisional. Each is contractually committed, subject to the contract’s terms. If a party fails to complete, there may be serious consequences, but the position depends on the circumstances and the contract. Exchange does not mean that no problem can arise; it means the parties have entered a binding agreement.

Your conveyancers confirm that exchange has taken place and communicate the agreed completion date. Keep that date to hand: it is the deadline around which to organise your move, payments and any remaining tasks.

How long is the gap between exchange and completion?

There is no single timetable for every transaction. The parties agree the completion date, and the gap between exchange and completion can vary. A property chain, arrangements for mortgage funds and the time needed to organise a move can all affect the date.

Before committing to a date, be clear about which day is exchange and which is completion. Once the date is agreed, arrange your plans around it. Check when your funds need to reach your conveyancer, confirm practical arrangements such as removals, and respond promptly to outstanding requests. This helps everyone work towards the same handover date.

What conveyancers arrange between exchange and completion

Once the completion date is agreed, the buyer’s conveyancer coordinates the money and legal steps needed to complete. The seller’s conveyancer prepares to receive the completion funds and progress the legal transfer. The work is tailored to the transaction, so the precise checks and documents can differ.

For a buyer with a mortgage, their conveyancer requests the loan funds from the lender in line with its requirements and the completion date. The conveyancer also calculates how much the buyer needs to contribute, checks the figures and explains when the money must arrive. The official government guidance provides a wider overview of buying and selling a home.

How are mortgage funds and completion money organised?

Your completion statement sets out the money needed to complete. It usually shows the remaining purchase balance and other amounts due, such as conveyancing fees and disbursements, which are payments for transaction-related items. If you are buying with a mortgage, the statement should show how the loan and your own contribution fit into the total. Check the figures against what you expect to pay and raise any questions promptly.

Arrange to send any required balance in cleared funds by the deadline your conveyancer gives you. Follow their payment instructions exactly and allow time for your bank to process the transfer. Do not leave it until completion day: if funds arrive late, this may affect the planned transfer of money through the chain.

What checks and documents may still be needed?

Before completion, conveyancers carry out final checks relevant to the transaction. These may relate to the property title, the buyer or the lender’s requirements; the same searches and checks do not apply to every purchase. Your conveyancer coordinates any outstanding contract or transfer documents and confirms that the legal arrangements are ready for completion.

The seller’s conveyancer prepares to receive the money and progress the transfer to the buyer. Both conveyancers keep track of outstanding requirements and let their clients know about actions or deadlines. Your part is to provide any requested information or funds by the specified time. These steps, alongside the buyer’s moving arrangements, make up much of what happens between exchange and completion.

Residential conveyancing brings the legal steps, payment arrangements and completion date together for buyers and sellers. If you are planning a sale or purchase, learn more about our residential conveyancing quote.

Can anything go wrong after exchange? Delays, chains and practical risks

Exchange is a binding commitment, but it does not guarantee that every step towards completion will go to plan. Funds may be delayed, a legal requirement may remain unresolved or another transaction in the chain may not be ready. A problem can affect progress without automatically meaning the sale has failed.

If you think something may disrupt the agreed date, tell your conveyancer as soon as possible. Explain what has happened, what remains outstanding and when you expect it to be resolved. Your conveyancer can explain the options and the relevant contractual position. Do not assume the date can be changed automatically or that the consequences are the same for every delay. The response depends on the contract and the circumstances.

What if completion is delayed after exchange?

Contact your conveyancer promptly if mortgage or purchase funds, documents or practical arrangements may not be ready. Early notice gives them time to understand the issue and communicate with the other side. Follow their advice before agreeing to changes or making commitments. The contract sets out the parties’ obligations, and the consequences of failing to complete depend on the circumstances.

Keep a record of important updates and respond quickly to requests for information. A delay does not have one automatic outcome. Do not treat an extension as agreed unless the necessary parties have agreed it in line with the contract.

How can a property chain affect completion day?

In a chain, money from one sale may help fund the next purchase, so transactions often need to complete in sequence. If an earlier link is delayed, that can affect the timing of payments and handovers further along the chain. Conveyancers coordinate with the other parties, but cannot control every external action or guarantee when funds will arrive.

Until your conveyancer confirms completion and the keys are authorised for release, keep some flexibility in your moving arrangements. For practical information about buying a home and possible issues along the way, read the Citizens Advice guide to buying a home.

If a complication arises, communicate clearly rather than making assumptions. What happens between exchange and completion depends on the source of the problem, the contract and how quickly everyone responds. Tell your conveyancer what you know, provide any requested information and follow their guidance on the next steps.

What should buyers and sellers do before completion day?

Knowing what happens between exchange and completion is only part of being prepared. Use this checklist to organise your own arrangements alongside the legal work. Your conveyancer will explain the deadlines for your transaction. If you are unsure what is needed, ask promptly rather than waiting until completion day.

Buyer checklist before completion

• When you receive your completion statement: Check the figures, including the purchase balance and any other amounts due. Ask about anything you do not understand, then arrange to send the required balance in cleared funds by your conveyancer’s deadline.
• Before completion: Confirm the mortgage-fund arrangements with your conveyancer and follow their payment instructions. Arrange buildings insurance in line with the contract and your conveyancer’s advice, as the appropriate start date can depend on the transaction.
• As moving day approaches: Confirm removal arrangements, update your address with relevant organisations and plan how you will collect the keys. You can usually take possession once completion is confirmed and the keys are authorised for release.

Seller checklist before completion

• Before moving day: Organise removals and plan to vacate the property by the agreed time. Follow the contract and your conveyancer’s instructions about the property’s condition and what should be left behind.
• As you prepare to leave: Take final meter readings where appropriate, update utility accounts and redirect or update your post and other address details.
• Before handing over: Gather all keys and access items, such as entry fobs, and follow the agreed arrangement for passing them to the agent or buyer. Do not assume the keys can be released before completion is confirmed.

Conveyancer-managed work

Your conveyancer coordinates the legal steps and keeps you informed about outstanding requirements and deadlines. The buyer’s conveyancer deals with mortgage funds and the completion money; the seller’s conveyancer prepares to receive those funds and progress the transfer. You may still need to provide information or take action, so respond quickly and tell your conveyancer if your plans or circumstances change.

A checklist helps you separate moving tasks from legal work, while regular communication keeps the completion arrangements on track. For support with the legal steps towards a residential sale or purchase, request a residential conveyancing quote.

What happens on completion day, and what follows afterwards?

Completion day is when the agreed sale or purchase is carried out. The main steps are the transfer of the purchase money, confirmation that completion has taken place and release of the keys. Timing can vary, particularly when funds need to pass through several transactions in a chain. Wait for your conveyancer’s confirmation before travelling to collect the keys or taking possession.

What happens on completion day, step by step?

1. The buyer’s conveyancer sends the completion money. They transfer the funds to the seller’s conveyancer in line with the completion arrangements.
2. The seller’s conveyancer confirms receipt. Once the money has arrived and completion is confirmed, they notify the estate agent or agreed keyholder that the keys can be released.
3. The buyer collects the keys and takes possession. This is generally when the buyer can move in, subject to the transaction’s arrangements.

Keep your phone accessible and stay in touch with your conveyancer on the day. A transfer can take time to reach its destination, and timing differs between transactions. Exchange is not permission to move in: completion, followed by confirmation and key release, is the practical handover point.

What legal work happens after completion?

Legal work continues after the keys are handed over. The buyer’s conveyancer deals with relevant post-completion steps. These can include submitting an applicable property tax return and arranging payment, then applying to HM Land Registry to register the change of ownership and any mortgage. Requirements depend on the property and jurisdiction, so your conveyancer can explain which steps apply and keep you informed.

Property transaction taxes differ across the UK. Stamp Duty Land Tax (SDLT) applies in England and Northern Ireland; Wales has Land Transaction Tax (LTT), while Scotland has Land and Buildings Transaction Tax (LBTT). Your conveyancer handles the relevant tax steps for your transaction and explains any information or funds needed from you.

Clear updates make these final stages easier to follow. Triangle Legal Services Limited provides digital-first residential conveyancing for sales and purchases, with a fixed-fee approach and proactive communication to help you understand outstanding actions. Qualified solicitor directors oversee the legal work in partnership with SRA-regulated firms.

If you are preparing for a sale or purchase, request a conveyancing quote for support with the legal steps towards completion.

Move towards completion with a clear plan

Exchange makes the agreement binding, but important steps remain before you can collect the keys. Your conveyancer coordinates the funds and legal work. You prepare for moving day, meet payment deadlines and respond promptly to requests. If a delay or chain issue arises, contact your conveyancer quickly and follow guidance based on your contract and circumstances.

Knowing what happens between exchange and completion helps you plan with confidence. On completion day, the buyer’s conveyancer sends the funds, the seller’s conveyancer confirms receipt and the keys are released under the agreed arrangements. Relevant legal and tax steps may continue afterwards.

Triangle Legal Services Limited supports residential sales and purchases with a digital-first service, proactive communication and a fixed-fee approach. Qualified solicitor directors oversee the legal work in partnership with SRA-regulated firms, helping keep the final steps clear and coordinated.

Request a residential conveyancing quote and take the next step towards a well-organised move.

Frequently Asked Questions

What happens between exchange and completion?

Between exchange and completion, the buyer and seller prepare to carry out their legally binding agreement. The buyer’s conveyancer arranges mortgage funds where relevant, checks the money due and coordinates final legal steps. The buyer organises their balance and moving arrangements; the seller prepares to vacate and hand over the keys. The completion date, chain and transaction requirements determine the exact tasks and timing.

How long is it usually between exchange and completion?

The parties agree the time between exchange and completion, so it can vary. It is often around one to two weeks, but that is not a fixed rule or a promise for every transaction. A chain, mortgage-fund arrangements and moving plans can all affect the date. Your conveyancer will confirm the agreed completion date. Use it to organise your move and meet payment deadlines.

Can a house sale fall through after exchange?

A sale is contractually binding after exchange, so neither party can simply withdraw without potential consequences. Unexpected problems can still affect progress, and failing to complete may have serious consequences depending on the contract and circumstances. Do not assume every issue means the sale has failed or that the outcome is the same in every case. Contact your conveyancer promptly for advice based on your agreement and situation.

What does a buyer need to do between exchange and completion?

Review your completion statement and check the deadline for sending any outstanding balance in cleared funds. Follow your conveyancer’s payment instructions and respond promptly to requests for information. Confirm mortgage-fund arrangements with your conveyancer, arrange buildings insurance in line with the contract and their advice, and organise removals and key collection. Plan to take possession only after completion is confirmed and the keys are authorised for release.

When do you get the keys after exchange?

You do not normally collect the keys at exchange. On completion day, the buyer’s conveyancer sends the completion money to the seller’s conveyancer. Once receipt is confirmed and completion has taken place, the seller’s conveyancer tells the estate agent or agreed keyholder to release the keys. Timing can vary, particularly in a chain, so wait for confirmation before travelling to the property or arranging access.

What happens if completion is delayed after exchange?

Tell your conveyancer immediately if funds, documents or practical arrangements may not be ready for the agreed date. They can assess the issue, communicate with the other side and explain possible next steps. Do not assume an extension is automatic or that a delay has a standard penalty. Any contractual consequences depend on the agreement and the facts, so follow your conveyancer’s case-specific advice before making commitments.

Does the buyer’s solicitor register the property after completion?

In England and Wales, the buyer’s conveyancer will generally apply to HM Land Registry after completion to register the change of ownership and any relevant mortgage. They may also handle any applicable property tax filing and payment. Processes and taxes differ across the UK: SDLT applies in England and Northern Ireland, while Wales and Scotland have their own property transaction taxes. Your conveyancer can explain the steps for your transaction.