A buyer has had an offer accepted, paid for a survey and instructed a solicitor. Then the seller receives a higher offer from someone else and changes course. It feels deeply unfair, particularly when a move is tied to a school place, a new job or the sale of a family home. But the short answer to whether gazumping is legal in England is yes, in most cases.
That answer can be frustrating. It also explains why clear communication, realistic timescales and active sales progression matter so much once an offer has been agreed. Understanding where the legal commitment begins helps both buyers and sellers make better decisions during a transaction.
What is gazumping?
Gazumping happens when a seller accepts an offer from one buyer but later accepts a higher offer from another buyer before contracts have been exchanged. The original buyer then loses the property, despite having started the conveyancing process and often spending money on searches, legal work and a survey.
It is different from gazundering, where a buyer reduces their offer shortly before exchange. Neither situation is pleasant, and both can destabilise an entire chain. Gazumping is especially difficult because the first buyer may have acted quickly and in good faith, only to find that their position was not yet legally protected.
Why gazumping is legal in England
In England and Wales, an accepted offer is usually described as being “subject to contract”. This means that, until contracts are formally exchanged, neither party is normally legally bound to complete the sale.
A seller can therefore consider another offer, negotiate with another buyer or decide not to sell at all. Equally, the first buyer can withdraw or seek to renegotiate if a survey reveals serious issues. This flexibility is built into the system, but it leaves room for uncertainty while solicitors investigate title, searches are ordered, mortgage finance is confirmed and chains are put together.
The position changes at exchange of contracts. At that point, the buyer and seller commit to the agreed terms, including the price and completion date. The buyer will generally have paid a deposit, often 10 per cent of the purchase price, and there can be significant financial consequences if either side fails to complete without a valid contractual reason.
There are limited circumstances where a party’s conduct might give rise to a separate legal issue, but these are unusual and highly fact-specific. For most residential transactions, an accepted offer alone does not prevent gazumping.
Why sellers may accept another offer
It is easy to assume every case is simply about a higher price. Sometimes it is. A seller may feel a duty to obtain the best available price, particularly where their onward purchase depends on it or where they are dealing with an estate, trustees or a separation.
However, sellers also weigh certainty. A lower offer from a chain-free buyer with a mortgage agreed in principle may be more attractive than a higher offer from someone whose property is still to sell. A buyer with cash evidence, a flexible completion date and a solicitor ready to start can offer real reassurance.
This is why the strongest offer is not always the highest figure. The quality of the buyer, the condition of their chain and their ability to proceed can be just as significant. A good estate agent should establish these points before an offer is put forward, then keep everyone informed as the sale progresses.
How buyers can reduce the risk of gazumping
No step can guarantee that a seller will not change their mind before exchange. Buyers can, however, make themselves easier to choose and reduce the time when the transaction is vulnerable.
Be ready before you offer
Arrange a mortgage agreement in principle before viewing seriously, or have evidence of funds if buying with cash. If you are selling a property, place it on the market early and aim to have a buyer in place before offering on your next home. Being able to demonstrate your position clearly gives a seller more confidence that the sale can proceed.
Once your offer is accepted, instruct your conveyancer promptly. Provide identification, complete the required forms and return paperwork without delay. Small delays at the start can add weeks to a transaction later on.
Ask for the property to be marked sold subject to contract
Once an offer is accepted, ask the agent whether the property will be marketed as sold subject to contract and whether further viewings will stop. This is common practice, although it is not a legal guarantee.
Sellers may still choose to accept backup interest in some situations, particularly if the chain is uncertain or the buyer’s finance has not been verified. A straightforward conversation is better than making assumptions. Ask what has been agreed, whether other offers have been received and what the seller needs to see to feel confident moving forward.
Move the legal process forward quickly
Instructing a survey early can identify obvious concerns before substantial time passes. Your solicitor should order searches and raise initial enquiries as soon as the contract pack is available. If you are obtaining a mortgage, respond quickly to requests from your lender or broker.
Speed should not mean rushing past problems. A survey may uncover defects that need specialist advice, and title issues can take time to resolve. The aim is to avoid preventable hold-ups, while allowing proper due diligence to take place.
Consider a lock-out agreement carefully
In some cases, buyers and sellers can enter into an exclusivity agreement, sometimes called a lock-out agreement. It may prevent the seller from negotiating with another buyer for a set period while the first buyer carries out checks and works towards exchange.
This can offer reassurance, but it is not a standard part of most house sales and both parties need independent legal advice. The agreement must be drafted carefully, should set realistic deadlines and may involve costs. It can be useful for a complex or high-value purchase, but it is not always proportionate for a straightforward move.
Reservation agreements are another option sometimes discussed in the property industry. They can require a financial commitment from both parties, with a defined consequence if one withdraws without an agreed reason. Their availability and suitability vary, so buyers should not assume they will be offered or that they remove every risk.
What sellers should consider before changing buyers
Sellers are entitled to consider the terms of any offer, but switching buyers late in the process can have consequences beyond the headline price. The new buyer may not prove as ready as expected. They may need a mortgage valuation, their chain may be less secure, or a survey may lead to a later renegotiation.
There is also the human impact. The original buyer may have incurred costs and made arrangements in reliance on the agreed sale. A seller who is concerned about their buyer’s progress should first ask for a clear update: has the mortgage been approved, are searches back, what enquiries remain, and is there an obstacle in the chain?
Where a higher offer genuinely presents a better route to completion, it should be assessed on its full merits rather than price alone. A transparent, well-managed process is usually more likely to protect the seller’s eventual outcome.
The value of communication during a property chain
Gazumping thrives where uncertainty is allowed to linger. A buyer who hears nothing for two weeks may worry that their seller is entertaining other offers. A seller who receives no update may conclude their buyer is not serious. Often, the underlying issue is simply that no one has explained what is happening next.
Regular contact between buyers, sellers, conveyancers, mortgage advisers and the estate agent can keep a transaction moving. In a local chain around Swindon or Royal Wootton Bassett, this can be particularly helpful where several linked sales need to exchange together. A named point of contact who chases updates and explains the position plainly can make a meaningful difference.
Charles Harding’s role, like that of any proactive local agent, is not to provide legal advice or replace a conveyancer. It is to verify offers, manage expectations, identify delays early and keep communication open from accepted offer through to completion.
If you have been gazumped
If a seller accepts another offer, ask the agent for a clear explanation of the position and whether the new buyer has genuinely been chosen. Avoid immediately increasing your offer unless the property remains right for you and the revised figure is within your affordable limit. Paying more under pressure can create problems later, especially if the mortgage valuation does not support the price.
Speak to your solicitor about work already completed and any steps that may still be useful for another purchase. Some searches or survey findings cannot be transferred, but understanding the costs helps you plan your next move. Most importantly, keep your buying position strong. Mortgage paperwork, proof of funds and a responsive legal team will help you act confidently when the next suitable home appears.
The period before exchange can feel uncertain, but it need not be unmanageable. Choose a property professional who will communicate honestly, keep the chain progressing and help you understand what is happening at every stage. That attention is often the best protection a buyer or seller can have when a move matters most.