Auction is a different transaction from a private treaty sale, not a faster version of one. The date is fixed, the price is found in public, and the commitment happens at a defined moment rather than whenever both sides get round to it.
What auction changes
In a normal sale the price is negotiated privately and either side can walk away until contracts exchange. At auction the price is discovered by competing bids, the sale date is set in advance, and the winning bid creates an obligation immediately.
That removes gazumping and chain collapse. It also removes the leisurely due diligence a private sale allows, which is why the legal pack is published before bidding rather than after.
Two methods, and the difference matters
Both are auctions. They differ in what happens the moment the hammer falls, and that difference decides which one suits a given buyer.
Modern Method of Auction
The winning bidder pays a reservation fee and enters an exclusivity period: 28 days to exchange, a further 28 to complete. Nothing is legally binding at the fall of the hammer, but the reservation fee is non-refundable, so walking away has a real cost.
The longer window exists so that mortgage buyers can use auction at all. A standard mortgage offer does not arrive in 28 days from a standing start, and the traditional method assumes it will not need to.
Traditional auction
Contracts exchange on the fall of the hammer. The buyer is committed there and then, pays a deposit immediately and completes within 28 days. Finance and legal work must be finished before bidding, not after.
It suits cash buyers, developers and anyone whose funding does not depend on a valuation survey.
How a lot reaches auction
- Instruction. A partner agency introduces the property and agrees a reserve with the seller.
- Pack preparation. The seller’s solicitor assembles title, searches and any special conditions.
- Marketing. The lot is listed with a guide price, and viewings run while bidding is open.
- Bidding. Registered bidders compete until the lot’s end time, extended if a late bid lands.
- Sale. If the reserve is met the lot sells; if not, it may be negotiated afterwards.
- Completion. Exchange and completion follow on the timetable the method sets.
Who auction does not suit
A buyer who needs to sell first, or whose funding is not arranged, should not bid. There is no provision for a chain and no renegotiation on the strength of a survey. If either applies, a private treaty purchase is the better route and we would rather say so.