What is gazumping and can you do anything about it?
Gazumping is when a seller accepts your offer and then accepts a higher one from someone else before contracts are exchanged. It is legal in England and Wales, and it is possible because of a structural feature of the system: nothing is binding until exchange of contracts.
That gap is typically eight to twelve weeks. During it, the buyer commissions a survey, pays for searches and legal work, and arranges a mortgage — often two to three thousand pounds of non-refundable spending — while the seller remains free to walk away for any reason or none.
The mirror image is gazundering, where a buyer reduces their offer at the last minute, exploiting the seller's weak position when they have already committed to a purchase of their own.
Scotland works differently. There, offers are made through solicitors and become binding at a much earlier point once missives are concluded, which makes gazumping largely a non-issue.
What actually reduces the risk:
Ask for the property to be taken off the market as a condition of your offer. It is not legally enforceable, but it establishes an expectation and most reputable agents will do it.
Move quickly. The single biggest protection is shortening the window. Instruct a solicitor immediately, have your mortgage agreement and identity documents ready, and chase your own side.
Being a strong buyer helps more than a slightly higher offer. Cash, no chain, or a completed sale makes a seller far less inclined to gamble on someone new.
A lock-out agreement — a paid contract giving you exclusivity for a set period — is available and rarely used.
Home buyers' protection insurance covers wasted legal and survey costs, typically for a modest premium, if the purchase collapses through no fault of yours.