Buying
Gazumping, gazundering and the price of a non-binding agreement
In some systems an accepted offer commits nobody until a later formal step. Everything spent before it is at risk.
This looks at non-binding offers from the practical end — what holds up once conditions stop being ideal.
What holds up in practice
- The point at which an agreement becomes binding varies fundamentally between countries.
- Costs spent before that point are unrecoverable if either side walks.
- Speed is the most effective protection available to most buyers.
The binding moment is the whole issue
Some legal systems bind both parties as soon as an offer is formally accepted; others bind nobody until a much later exchange of contracts. In the second kind, weeks of surveys, searches and legal work happen while either side remains free to walk away. Gazumping is a seller accepting a higher offer during that window; gazundering is a buyer reducing theirs at the last moment.
Neither is possible in a system that binds at acceptance, which is why advice from one country can be actively misleading in another.
What is actually at stake
A buyer who is gazumped loses survey fees, search fees and whatever legal work has been done, none of which transfers to another property. A seller who is gazundered faces the same losses plus a collapsing chain and a decision made under time pressure.
Where it helps most, the party with less to lose has the leverage, which is why the tactic tends to appear at the point of maximum sunk cost. Understanding that structure makes the behaviour predictable rather than shocking.
Speed is the main defence
The exposure window is exactly as long as the conveyancing takes, so shortening it reduces the risk directly. Instructing a solicitor before the offer is accepted, having identification and finance documents ready, and returning forms the same day all compress it.
In practice, booking the survey immediately rather than waiting for the mortgage valuation removes another fortnight. None of this is glamorous, and it does more than any clause.
Agreements that help a little
Lock-out or exclusivity agreements commit a seller not to negotiate with anyone else for a set period, usually for a modest deposit. They do not force a sale; they only remove the seller freedom to entertain another buyer during the window. Insurance products exist in some markets that reimburse abortive costs if the other side withdraws, with conditions attached.
Read what actually triggers a payout before treating either as protection.
Asking the property off the market
Requesting that the listing be marked as under offer and viewings stopped is normal and often agreed. It has no legal force, but it removes the flow of new interest that produces a higher offer. Agents have a duty in many jurisdictions to pass on all offers to the seller, which is worth knowing before assuming a promise binds anyone.
Ask the agent directly whether viewings have actually stopped rather than assuming they have.
If that does not fit your week, it is not a failure of willpower.
When it happens to you
The immediate question is whether the property is still worth the new price to you, ignoring what you have already spent. Sunk costs argue for matching a higher bid and are precisely the wrong reason to do so. A gazundering buyer at the last moment is making a bet that you cannot afford to refuse, and sometimes they are wrong.
Where it helps most, knowing in advance what you would do makes that decision under pressure much cheaper.
The takeaway
Find out exactly when an agreement becomes binding where you are buying, then spend your effort on shortening the gap.
Pick the one that costs you least, and let the rest wait.
Questions readers ask
Can I sue someone who pulls out?
In systems where nothing is binding before exchange, generally not, beyond narrow exceptions. In systems that bind at acceptance, remedies usually exist. Ask a conveyancer in your own jurisdiction.
Does paying a holding deposit stop gazumping?
Only if it is attached to a written exclusivity agreement with a defined period. A holding deposit alone typically creates no obligation on the seller at all.
