Property InsightsOctober 16, 2026 · 12 min read

Vendor Bids at Auction: How to Spot One in Queensland and How to Respond

IPS Buyer’s Agents guide to vendor bids at Queensland property auctions

A vendor bid is a bid made at auction on the seller’s behalf, either by the auctioneer or by the seller or their representative. In Queensland it is legal only while bidding is below the seller’s reserve price, and the auctioneer must announce it. So when you hear “vendor bid”, you know two things: the property has a reserve, and the bidding has not reached it yet.[1]

That makes a vendor bid one of the few pieces of hard information you get on auction day. This guide explains the Queensland rules, how to recognise a vendor bid as it happens, how to respond without paying more than you planned, and what to do if the property is passed in. It is written for buyers bidding in Brisbane, Moreton Bay and across South East Queensland, including buyers who have bid at auctions interstate, where the rules are different.

Key takeaways

  • In Queensland, a seller can bid on their own property through the auctioneer or a representative, but only up to the reserve price, and every vendor bid must be announced.
  • A vendor bid tells you a reserve exists and has not been met. It does not tell you what the reserve is: the auctioneer must not disclose that figure.
  • Any seller-side bid after the reserve is reached is a false bid, and dummy bids are illegal.
  • There is no cooling-off period at auction, or for a contract a registered bidder signs before 5pm on the second business day after an unsuccessful auction.
  • Set your limit before the day, and decide in advance what you will do if a vendor bid is the last bid when the hammer falls.

What is a vendor bid?

“Vendor” is the legal word for the seller. A vendor bid is the seller’s side of the room putting a number on the table. In Queensland it can come from the auctioneer bidding on the seller’s behalf, or from the seller or a representative bidding in person, as long as bidding is still below the reserve.[1]

Sellers use vendor bids for two reasons. The first is to start the bidding when the room is quiet: an auctioneer may open with a vendor bid to give buyers a figure to respond to. The second is to move the price towards the reserve when genuine bidding has stalled well below it. Either way, a vendor bid is not a buyer, and it can never buy the property.

Vendor bid or dummy bid?

The difference is disclosure and timing. A vendor bid is announced, and it is made before the reserve is reached, which the rules allow. A dummy bid is a bid planted to push the price up after the reserve has been reached, whether it comes from the seller, their family or friends, the auctioneer or anyone else acting for them. Dummy bids are illegal in Queensland, and so is any vendor bid made once the reserve has been reached: the Government calls those false bids.[1]

The Queensland auction rules buyers should know

Queensland’s auction rules are administered by the Office of Fair Trading. These are the ones that matter most when you are the one bidding:

  1. Vendor bids stop at the reserve. Before the reserve is reached, the auctioneer may bid on the seller’s behalf or accept bids from the seller or their representative. Each vendor bid must be announced.[1]
  2. The reserve stays confidential. The seller sets the reserve in writing before the auction. The auctioneer may say that a reserve exists but must not reveal the amount, or disclose an estimated value.[2]
  3. Once the reserve is reached, the property must sell. When bidding meets or passes the reserve, the property is “on the market”, vendor bids must stop, and the seller must accept the highest bid. If there is no reserve, the property is on the market from the first bid.[2]
  4. Only registered bidders can bid. The auctioneer keeps a register of bidders, sights identification such as a driver’s licence before registering you, gives you an identifier such as a numbered card or paddle, and announces at the start that only registered bidders may bid.[2]
  5. There are no price guides. Price guides are illegal for auction properties in Queensland. A price you see while searching a listings website is a search setting, not a price guide.[1]
  6. The conditions of sale are read out. The auctioneer must announce conditions such as the deposit and inspection details, and may use the unsigned contract to do it. The auctioneer must also hold a current licence, which you can check online for free.[1]