Exchange of Contracts Explained
In England and Wales, nothing binds either party until this single moment, and then everything does. Here is what exchange means and what has to be ready first.
The Short Version
- Exchange is the binding moment in England and Wales, before it, either side can walk away
- The deposit (usually 10%) is paid and the completion date is fixed at exchange
- Risk passes to the buyer at exchange, so insure from that point, not completion
- Everything (searches, mortgage offer, deposit) must be ready first
- Failing to complete after exchange means forfeiting the deposit and possible further liability
- Scotland has no exchange: the binding moment is conclusion of missives
What exchange actually is
Exchange of contracts is the moment a property transaction in England and Wales becomes legally binding. Up to that point (however many weeks of searches, enquiries and mortgage arrangements have passed) either party can walk away without legal penalty. At exchange, that freedom ends for both sides simultaneously.
The name is literal. Each party's solicitor holds a signed copy of an identical contract. On a coordinated phone call, following a set formula, they confirm the two versions match and formally exchange them. From the instant that call concludes, buyer and seller are committed.
What happens at the point of exchange
- The deposit is paid. The buyer's deposit, typically 10% of the purchase price, is transferred to the seller's solicitor and held. If the buyer later fails to complete, this deposit is generally forfeit.
- The completion date is fixed. A firm date is written into the contract, usually one to four weeks ahead, though same-day exchange and completion is possible.
- Risk passes to the buyer. From exchange, the buyer is responsible if the property is damaged, which is why buildings insurance must be in place from exchange, not completion.
Why nothing binds before exchange
This is the single biggest structural difference between English and Scottish conveyancing, and the source of most frustration for English buyers. Because the agreement to buy is "subject to contract" until exchange, a seller can accept a higher offer at any point beforehand, gazumping, and a buyer can reduce their offer or withdraw: gazundering. Money already spent on searches, surveys and legal fees is not recoverable when a deal collapses pre-exchange.
In a chain, exchange is usually synchronised so that every transaction exchanges on the same day. One party who is not ready holds up everyone, which is why chains can feel maddeningly fragile right up to the moment they suddenly firm up.
What has to be in place before you can exchange
- Searches back and reviewed, with any issues resolved
- All enquiries answered satisfactorily
- A formal mortgage offer in hand (not just an agreement in principle)
- The deposit funds cleared and available
- Buildings insurance arranged to start from exchange
- The contract and transfer signed
- In a chain, every other party ready to exchange too
The gap between exchange and completion
The period between exchange and completion exists to let everyone make final arrangements: booking removals with confidence, arranging the final mortgage drawdown, and doing pre-completion searches to confirm nothing has changed on the title. During this window the transaction is secure, the commitment is binding, but you are not yet the owner and do not yet have the keys.
Some transactions exchange and complete on the same day. This removes the certainty gap but leaves no margin for error, so it is more stressful and less common for chains.
If someone fails to complete after exchange
Because exchange is binding, failing to complete is a serious breach. The wronged party can serve a notice to complete, typically giving ten working days. If completion still does not happen, the contract can be rescinded: a defaulting buyer usually forfeits the deposit and may be liable for further losses, and a defaulting seller can be compelled to complete or pay damages.
The Scottish comparison
Scotland has no exchange of contracts. The binding moment is conclusion of missives, reached through an exchange of formal letters between solicitors rather than a single swapped contract. Crucially, missives usually conclude earlier in the process than exchange does in England, which shortens the window in which gazumping can occur. The trade-off is that Scottish buyers commit sooner and so need their finances further advanced before offering.
A Note on Jurisdiction
Exchange of contracts applies in England and Wales (and, with local differences, Northern Ireland). Scotland has no equivalent single step: the binding contract is formed when missives are concluded, which typically happens earlier in the transaction.
Common Questions
Frequently Asked Questions
What is the difference between exchange and completion?
Exchange of contracts is when the transaction becomes legally binding: the deposit is paid and a completion date is fixed. Completion is the later date when the balance is transferred, ownership passes and you get the keys. There is usually a gap of one to four weeks between the two, though they can happen on the same day.
Can I pull out after exchange of contracts?
Not without serious consequences. After exchange the contract is binding, and a buyer who withdraws generally forfeits their deposit, typically 10% of the price, and may be liable for the seller's further losses. If you have doubts, they must be resolved before exchange, not after.
When do I need buildings insurance?
From exchange of contracts, not completion. In England and Wales, risk in the property passes to the buyer at exchange, so you are responsible if it is damaged in the gap before completion. Your lender will require insurance to be in place. In Scotland, risk usually passes at settlement, but check your missives as terms vary.
Does Scotland have exchange of contracts?
No. The Scottish equivalent is conclusion of missives, where solicitors exchange formal letters until agreement is reached. It creates the same binding effect but is structured differently and usually happens earlier in the transaction, which is one reason gazumping is less common in Scotland.
Keep Reading
Related Guides and Pages
Completion Day
What happens on the day itself, once contracts are exchanged.
Scotland vs England
Why the binding moment differs, and what that changes.
How Long It Takes
Where the weeks go before you reach exchange.