Property auctions account for roughly 3% of all UK residential sales, but they punch above their weight in terms of bargains. Repossessions, probate sales, properties needing significant work, and unusual lots all end up under the hammer. The catch? You need your finances lined up before you bid.\n\nBefore Auction Day — Get a legal pack from the auctioneer (usually available two to three weeks before). Have your solicitor review it thoroughly. Commission your own survey if the property interests you. Arrange your finance: either a mortgage offer in principle (but be aware most standard mortgages cannot complete in 28 days) or a bridging loan with a confirmed facility letter.\n\nWhy Bridging Finance Is Common — Standard mortgage completions take six to eight weeks. Auction terms require completion within 28 days (sometimes 20). Bridging lenders like MT Finance, West One, and Together Money can complete in as little as 3 to 7 days, giving you comfortable headroom.\n\nOn Auction Day — Set your absolute maximum bid before entering the room and stick to it. The excitement of a live auction makes it dangerously easy to overpay. Factor in renovation costs, stamp duty, bridging interest, and a contingency of at least 10% on top of refurbishment estimates.\n\nAfter the Hammer Falls — You pay a 10% deposit immediately (by bank transfer or banker's draft). You exchange contracts on the spot. Completion must happen by the deadline stated in the legal pack, usually 28 days. Missing the deadline means losing your deposit and potentially being sued for the balance.\n\nThe Refurbish and Refinance Strategy — Many investors buy below market value at auction, refurbish over three to six months using bridging finance, then refinance onto a standard buy-to-let mortgage at the improved value. Done well, this lets you recycle most or all of your initial cash investment and move on to the next project.