Introduction

Exchanging contracts is when the buyer and seller legally agree to the sale of a property.

Once contracts have been exchanged, both sides are committed to the transaction and backing out becomes difficult and expensive.

Exchange of contracts is one of the most important milestones in the conveyancing process because it creates a legally binding agreement between the buyer and seller.

This guide explains what needs to happen before exchange, what happens on completion day, why delays can occur, and the consequences of failing to complete after exchange.

Steps to Prepare for Exchange

Before contracts can be exchanged, several important steps need to be completed.

Contracts Reviewed

Both the buyer's solicitor and seller's solicitor must review and agree on the contract terms.

Any outstanding legal enquiries should be resolved before exchange takes place.

Final Price Agreed

The buyer and seller must agree on the final sale price.

Once agreed, this figure becomes part of the legally binding contract.

Signed Documents

Both solicitors must hold signed contracts.

The seller's solicitor must also hold a signed Transfer of Title Deed (TR1 Form).

Buyer's To-Do List Before Exchange

Before exchange can proceed, the buyer should:

• Pay the deposit.

• Secure their mortgage offer.

• Arrange buildings insurance if required.

Completing these steps helps ensure the transaction can move forward without unnecessary delays.

Completion Date Agreed

Both parties must agree on a completion date.

This is the date on which ownership of the property will officially transfer and the buyer will receive the keys.

Legal Confirmation

Once everything is ready, the solicitors exchange contracts, usually over the telephone.

At this point, the agreement becomes legally binding and both parties are committed to completing the transaction.

What Happens on Completion Day?

On the agreed completion date:

Buyer

The buyer pays the remaining balance through their solicitor, typically using mortgage funds.

Once completion takes place:

• The buyer officially becomes the owner of the property.

• The buyer receives the keys.

• Ownership legally transfers.

Seller

The seller must:

• Vacate the property on time.

• Leave the property in the agreed condition.

• Hand over vacant possession to the buyer.

After Completion

Stamp Duty

The buyer's solicitor arranges payment of any Stamp Duty Land Tax due to HM Revenue & Customs.

Land Registration

The buyer's solicitor registers the new ownership details with HM Land Registry.

This formally records the buyer as the legal owner of the property.

How Long Does Exchange Take?

The exchange process itself usually takes only a few hours.

During this period:

• Solicitors review the final contracts.

• The buyer signs the necessary documents.

• The buyer pays the deposit.

• The buyer authorises their solicitor to proceed.

• Contracts are exchanged between solicitors.

Once contracts are exchanged, the transaction becomes legally binding.

Why Could Exchange Be Delayed?

Although many exchanges proceed smoothly, delays can happen for a variety of reasons.

Solicitors' Queries

Solicitors may still be waiting for responses to legal enquiries or title-related questions.

Outstanding issues often need to be resolved before exchange can proceed.

Slow Paperwork

Leasehold properties, non-standard construction properties and delayed local authority searches can all slow down the process.

Finance Problems

Delays can occur if the buyer:

• Has not secured a mortgage offer.

• Experiences mortgage lender delays.

• Cannot provide funds when required.

What About the Deposit?

The deposit forms an important part of the exchange process.

Who Holds the Deposit?

The seller's solicitor usually holds the deposit until completion takes place.

What Happens if the Buyer Pulls Out?

If the buyer withdraws after contracts have been exchanged, they will usually lose their 10% deposit.

This is one of the reasons why exchange of contracts is considered such an important milestone.

The Gap Between Exchange and Completion

There is usually a period between exchange and completion.

For most transactions, this gap is around one to two weeks.

This gives both parties time to:

• Organise removals.

• Arrange utilities.

• Prepare for moving day.

• Finalise any outstanding practical arrangements.

However, it is possible to:

• Exchange and complete on the same day.

• Agree a longer period between exchange and completion.

The timescale is determined by mutual agreement between the buyer and seller.

Potential Issues After Exchange

Although uncommon, problems can occasionally arise after contracts have been exchanged.

Examples include:

Mortgage Delays

The buyer's lender may experience delays in releasing mortgage funds.

Property Damage

Unexpected events such as:

• Flooding

• Storm damage

• Fire damage

may affect the property before completion takes place.

Personal Emergencies

Unexpected circumstances such as serious illness or bereavement can sometimes impact completion arrangements.

If issues arise, solicitors will often work together to resolve matters and may issue a Notice to Complete where appropriate.

Consequences of Failing to Complete

Once contracts have been exchanged, both parties are legally obligated to complete the transaction.

Failure to do so can have serious financial consequences.

If the Buyer Fails to Complete

The seller may:

• Keep the buyer's 10% deposit.

• Claim additional damages.

• Recover financial losses resulting from the failed transaction.

If the Seller Fails to Complete

The buyer may:

• Receive their deposit back.

• Claim interest for the delay.

• Pursue additional legal remedies where appropriate.

Actions to Complete

Homeowner and Buyer's Solicitor

• Exchange contracts.

Update Milestones

Once contracts have been exchanged:

• Mark the milestone as complete within your portal.

• Notify everyone involved in the transaction.

• Update your conveyancing checklist.

Keeping milestones up to date helps ensure everyone involved remains informed throughout the process.

Final Message From Gary

Exchanging contracts is a key stage in the property buying and selling process where the buyer and seller enter into a legally binding agreement to proceed with the transaction.

Before exchange, solicitors review contracts, the buyer secures a mortgage offer and pays the deposit, and both parties agree the final price and completion date.

On completion day, the buyer pays the remaining balance and receives the keys, while the seller vacates the property and hands over possession.

After completion, the buyer's solicitor deals with Stamp Duty and updates HM Land Registry.

Delays to exchange can occur due to unresolved legal enquiries, slow paperwork or mortgage-related issues. Most transactions have a one to two week gap between exchange and completion, although same-day exchange and completion can also take place.

Failing to complete after exchange can have significant financial consequences, including loss of the deposit or claims for damages.

Have ideas on how we can improve this guide?

Please share them with us at gary@bayzos.co.uk.

Gary (Founder) & The Bayzos Team

Disclaimer:

The information in this guide is provided for general information purposes only and does not constitute legal, financial, mortgage, tax, or professional advice.

While we aim to keep the information accurate and up to date, Bayzos Estate Agents Limited makes no guarantees or warranties regarding its accuracy or completeness.

You should always seek advice from a qualified solicitor, financial adviser, mortgage broker, accountant, or other relevant professional before making any decisions based on this information.

Bayzos Estate Agents Limited accepts no liability for any loss or damage arising from reliance on this guide.