The Short Answer
Exchange of Contracts is the stage in a property transaction when the buyer and seller become legally bound to complete the sale on an agreed date.
Until contracts have been exchanged, either party can usually withdraw from the transaction without the legal consequences that apply after exchange. Once exchange has taken place, both parties are committed to the transaction.
What Happens Before Exchange?
Before contracts can be exchanged, a considerable amount of legal work needs to be completed. This may include:
- Reviewing the contract documentation.
- Investigating the legal title.
- Receiving and reviewing search results.
- Raising and resolving enquiries.
- Receiving your mortgage offer (if applicable).
- Satisfying any lender requirements.
- Preparing your Report on Title.
- Agreeing a completion date with all parties in the chain.
- Receiving your signed contract and any deposit required for exchange.
Only when everyone is ready can contracts be exchanged.
How Does Exchange Take Place?
Exchange of Contracts is usually carried out by the buyer's and seller's conveyancers over the telephone using an agreed Law Society Formula.
Once both conveyancers confirm that they hold signed contracts and all requirements have been met, the contracts are formally exchanged and the agreed completion date becomes legally binding.
You do not need to be present when exchange takes place.
What Changes After Exchange?
Once contracts have been exchanged:
✔ The completion date is legally agreed.
✔ The buyer and seller are committed to the transaction.
✔ Neither party can simply change their mind without potentially facing legal and financial consequences.
✔ Arrangements such as removals can usually be confirmed with confidence.
Exchange is often seen as one of the most significant milestones in the conveyancing process.
Can Exchange and Completion Happen on the Same Day?
Yes.
Although many transactions exchange contracts a few days or weeks before completion, it is also possible for exchange and completion to take place on the same day.
Whether this is appropriate will depend on the circumstances of the transaction and the agreement of everyone involved.
Why Can't We Exchange Earlier?
Your conveyancer must be satisfied that all necessary legal investigations have been completed before exchange takes place.
Exchanging too early could expose you to unnecessary risks, particularly if important information is still outstanding.
Our role is to ensure that you fully understand the legal position before you become contractually committed.
What Happens If Someone Pulls Out Before Exchange?
Until contracts have been exchanged, the transaction is not legally binding.
This means that either the buyer or seller may decide not to proceed, although this can be disappointing for everyone involved.
For this reason, we always recommend waiting until after exchange before making irreversible financial commitments such as booking non-refundable removals or giving notice on rented accommodation.
Top Tip
Exchange of Contracts is the point at which your transaction becomes legally binding—not when your offer is accepted.
If you're unsure whether contracts have been exchanged, always check with your conveyancer before making arrangements based on your proposed moving date.
In Practice...
One of the most common questions we are asked is, "Can we exchange today?"
While everyone is naturally keen to move forward, exchange can only take place once all legal work has been completed, any outstanding issues have been resolved, and every party in the chain is ready. Rushing to exchange before these steps are complete can create unnecessary risks that are far more difficult to resolve afterwards.
Did You Know?
In a chain of property transactions, exchange usually takes place for every linked sale and purchase on the same day. This ensures that each transaction is legally connected, allowing everyone in the chain to complete on the agreed date.