Why This Is Completely Legal
It is worth being blunt about why this works: it is completely legal. In England and Wales, no property transaction is legally binding until contracts are exchanged. Right up until that moment, either side can walk away, or renegotiate, with no penalty at all. A buyer who senses a seller is desperate, exhausted, or out of time has every legal right to use that leverage — and this year, more of them are.
Why Gazundering Is Rising Right Now
Estimates of how common gazundering actually is vary wildly — some put it at 5-10% of transactions, while conveyancing solicitors who deal with it daily suggest it touches a far higher share of chains in a falling or flat market. What isn't in dispute is the direction of travel. 2026 has handed buyers record levels of choice, more time to negotiate, and a market where sellers are increasingly the ones under pressure to get a deal done.
Buyers know it too. When a buyer sees a property has already had a price reduction, sat on the market for months, or belongs to a seller who has publicly stated a moving deadline, they treat that as an invitation to renegotiate downward at the last possible moment — when the seller has the most to lose and the least time to do anything about it.
Why Sellers Are So Exposed to It
By the time gazundering happens, a seller has usually already taken the property off the market and lost momentum with other buyers, paid for a survey, searches and legal work that doesn't get refunded if the deal collapses, and often committed to a related purchase or a moving date of their own. The buyer is risking very little. The seller is risking almost everything they've already spent, plus the weeks or months it would take to find another buyer from scratch in a market where nearly a quarter of agreed sales are already collapsing before completion for entirely unrelated reasons.
This is precisely the imbalance that traditional estate agents are not equipped to fix. An agent's fee is typically contingent on the sale completing, which means once a gazundering threat appears close to exchange, the agent's financial incentive can quietly start pointing toward getting you to accept the cut rather than holding the line on your behalf.
What Actually Reduces Your Risk
There is no way to make gazundering illegal, and no clause that fully prevents it in a standard open-market sale. But there are ways to reduce your exposure:
Keep other interest warm. Don't fully close the door on backup viewers or offers until contracts are actually exchanged — a seller with a credible alternative buyer has far more room to say no.
Push for a fast exchange. The longer the gap between an accepted offer and exchange of contracts, the more time a buyer has to watch the market move and decide to renegotiate. Every week of delay is a week of exposure.
Use a solicitor who moves quickly and pushes back. A conveyancer who lets a file sit for weeks is, often unintentionally, giving a wavering buyer the exact window they need.
Know your walk-away number before you're under pressure. Sellers who haven't decided in advance what they will and won't accept are far more likely to cave in the moment, simply to make the stress stop.
The One Sale Gazundering Can't Touch
The honest alternative, if you need genuine certainty rather than just a lower risk of renegotiation, is to remove the open-market chain entirely. A direct sale to a cash buyer is agreed at a fixed price, with no mortgage chain above or below you, no survey renegotiation, and a completion date that is typically seven to twenty-eight days away rather than three to six months. There is far less time, and far less room, for a gazundering attempt to even take shape.
That trade-off is real and worth being honest about: a cash sale is priced below full open-market value, in exchange for speed and certainty. For a seller who has already been gazundered once, or who cannot afford to gamble another two or three months on an open-market chain that might collapse anyway, that trade-off is often the more rational choice — not the desperate one it's sometimes made out to be.