On auction day if you are wanting to bid, you must register in bidder’s record and you will receive a bidder’s number that you will use when bidding.
The auctioneer will outline all rules before the bidding begins, including their obligation to refuse bids after the hammer falls, to arbitrate bid disputes and also to refuse bids that come from those who have not registered for the auction. There may be more specifics depending on where the auction takes place, so check the rulings and listen carefully to the auctioneer. If you are the successful bidder and the property sells to you, you are required to sign the contract immediately and pay a 10% deposit. There is no cooling off period if you buy at auction.