What is gazumping and what to do if it happens to you

Most home sales in England and Wales go through without drama. The minority that do not often hit two specific problems near the end. Gazundering is when the buyer drops their offer just before exchange. Gazumping is the reverse: the seller accepts a higher offer from someone new after they have already accepted yours. Both are legal under English law. Both can cost the person caught in them thousands of pounds.

What is gazumping and how does it work?

How common is gazumping in 2026?

Gazumping tracks the market. In hot markets where homes attract multiple buyers, it climbs. In flat markets where homes take months to find one offer, it falls close to zero. Nationwide measured 3.0% annual price growth in April 2026, released on 1 May 2026. That is a warmer market than 2023, cooler than the post-pandemic peak. Gazumping rates this year sit between those two extremes.

What does gazumping actually cost a buyer?

The financial damage is the work already done on the sale that has to be paid for either way. Most of it is non-refundable because the suppliers have already done the work.

A typical gazumped buyer therefore loses somewhere between £1,000 and £3,000 with nothing to show for it. The legal expression for this is wasted costs, and the wasted-costs problem is the single biggest reason consumer groups continue to lobby for English law to move toward the Scottish model.

How can buyers reduce the risk?

• Speed of exchange. Push your solicitor and your lender to compress the time between accepted offer and exchange. That is the only window in which gazumping can happen.
• Lock-out agreement. Ask the seller to sign a short legal agreement preventing them from accepting another offer for an agreed period, typically 4 to 6 weeks. Costs around £200 to £400 in legal fees, and rare for sellers to agree without strong leverage.
• Mortgage in principle ready. A buyer with a fully checked agreement in principle and a deposit in their account is a stronger, faster proposition than a buyer who 'should be fine'.
• Choose a seller who has already turned away rival offers. Ask the agent how many viewings the home had before yours and how many offers were turned down. A seller who has already rejected higher offers is much less likely to be tempted by a new one.

What does this mean for sellers?

Sellers in England and Wales have a legal right to consider any offer that comes in, at any point before exchange. That right exists for a reason. The seller's choice of buyer belongs to the seller, including the choice between keeping their word or accepting a higher figure.

The decision is rarely about money alone. A chain-free buyer ready to exchange in three weeks is often worth more than a buyer offering £10,000 more but stuck in a three-link chain. Sellers who jump for the higher number without checking the chain frequently end up in a worse position six weeks later, with a sale that has fallen through and the original buyer gone.

Exchange of contracts is the only moment in an English property sale where both sides are properly committed. Everything before it is conversation.

Could the law on gazumping change?

Successive UK governments since 1998 have looked at moving England and Wales toward the Scottish missives model, in which the sale becomes binding much earlier. None has done it. Reservation agreements, a softer version of the Scottish model, have been discussed in Parliament more than once. Until something changes, gazumping is part of the process. Exchange of contracts is the point at which the sale becomes legally binding in England and Wales.

Where ValuQ fits in

ValuQ is a UK proptech that gives homeowners free, side-by-side property valuations from competing local estate agents, without revealing the homeowner's identity until they choose to. The platform does not handle the legal conveyancing process where gazumping happens, but the agent the homeowner picks at the start usually shapes how the rest of the sale plays out, including how multiple offers get presented to the seller later on.