Why the conveyancing timeline for an auction purchase is compressed compared to buying through an estate agent, and what to prepare in advance.
In a standard purchase, you exchange contracts only once searches, enquiries, and your mortgage offer are all sorted. At auction, the fall of the hammer is the exchange — you're legally committed to buy the moment you're the winning bidder, before any of that work has been done.
Auction houses publish a legal pack (title, searches where available, and special conditions of sale) before the auction, and it's genuinely important to have a conveyancer review it beforehand — once you've won the bid, you can't back out over something the legal pack would have flagged.
Most auction contracts require completion within 20–28 days of the auction, which is far faster than the typical 8–12 weeks for a standard purchase — meaning your mortgage (if you're using one) needs to be essentially ready to go before you bid, not arranged afterwards.
You'll typically need to pay a deposit (commonly 10% of the purchase price) on the day, on top of the auction house's own fees — worth having readily available rather than assuming you can arrange it afterwards.
Because everything moves faster once you've won a bid, it's worth having a conveyancer already lined up — and an itemised quote in hand — before auction day, rather than trying to instruct a firm and agree fees at the same time as racing through a compressed completion deadline.
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