Buying at Auction with Less Than a 20% Deposit: The Valuation Trap
Getting your own home is a big step.
But when it comes to buying a home through an auction, there are important things to think about.
Disclaimer: The below guide is general in nature and do seek individual financial advice to see how this applies to your situation. Our experienced advisers are on hand to help at no cost to you (T’s and C’s apply)
Auctions can be an incredibly exciting way to buy your first home. The fast pace, the competitive bidding, the moment the hammer falls—it is a massive adrenaline rush.
But if you are buying a house with less than a 20% deposit, diving into an auction is a financial minefield.
While it is technically possible to buy a house at auction with a low deposit, the hidden risks and upfront costs usually make it a bad idea. Here is a plain-English look at why auctions and low deposits don’t mix, and the smart strategy you can use to buy the house anyway.
The "Unconditional" Reality of Auctions
To understand the risk, you first have to understand how New Zealand property auctions legally work.
When you buy a house normally (through negotiation), you can add a "finance condition" to your offer. This gives you a safe window—usually 5 to 10 working days—to get the bank to officially approve your loan on that specific house before you are legally locked in.
At an auction, there are no conditions.
If you raise your hand, win the bidding, and the hammer falls, you have just made an unconditional offer. You are legally obligated to buy that property right then and there. If the bank turns around the next day and says, "Actually, we don't want to lend on that specific house," you are still legally required to buy it, which can result in devastating financial penalties.
The $1,000 Valuation Gamble
So, how do you make sure the bank will absolutely lend on the house before you bid? You have to get everything fully approved prior to auction day.
If you have a 20% deposit, this is relatively easy. But if you have a 10% or 15% deposit, the bank will almost always demand a Registered Valuation before they give you that unconditional green light.
And this is where the trap snaps shut.
The Cost: A registered valuation usually costs between $800 and $1,500.
The Timing: You have to order and pay for this valuation before the auction starts so the bank can approve your finance.
The Gamble: Imagine you pay $1,000 for the valuation, the bank says "Yes," and you head to the auction feeling confident. Then, another buyer outbids you. You have just lost the house, and you are entirely out of pocket for that $1,000 valuation. You get nothing in return.
If you bid on three or four houses at auction and keep losing to cash buyers, you could easily burn through $4,000 in valuation fees with absolutely nothing to show for it.
One strategy to consider: Wait for it to "Pass In"
Because of the massive upfront financial risk, we strongly advise low-deposit buyers to avoid actively bidding at auctions. However, that doesn't mean you can't buy the house!
Instead of gambling your hard-earned cash, use the "Passed In" Strategy. This works best in buyers markets, when the market is slower.
Go to the Auction, but Do Not Bid: Attend the auction, stand at the back, and keep your hands firmly in your pockets.
Wait for the "Pass In": In slower property markets, many houses do not reach the seller's minimum reserve price during the auction. When this happens, the auctioneer will "pass the property in," meaning it did not sell under the hammer.
Make a Conditional Offer: Once the auction is officially over, the property usually reverts to a standard negotiation. Now is your moment to strike. Because the auction rules no longer apply, you can submit a standard, conditional offer.
By putting in an offer subject to finance and valuation, you are protected. If the seller accepts your offer, you then pay the $1,000 for the registered valuation. If the valuation comes back fine, you buy the house. If the valuation doesn’t come back as you wished, or the bank says no, your finance condition allows you to walk away safely.
The 10% Deposit Trap (The KiwiSaver Problem)
Let's say you take the gamble, you pay for the valuation upfront, and the bank gives you the green light to bid unconditionally. You still have one major hurdle left to clear.
If you are the successful bidder at an auction, the standard rules dictate that you must pay a 10% deposit to the real estate agency on the spot, usually immediately after the hammer falls. You might need those funds cleared and ready to transfer via internet banking that same day.
Here is the problem for low-deposit buyers: your deposit is probably tied up in your KiwiSaver account.
While KiwiSaver is a fantastic tool to help you buy your first home, it comes with a strict administrative process. KiwiSaver withdrawals take time—usually between 10 and 15 working days to process. You cannot simply log into your banking app at an auction and transfer $75,000 out of your KiwiSaver.
If you win the auction and cannot immediately pay the required deposit, you are in breach of the contract, and the seller can cancel the agreement.
How Can You Get Around This?
If you are determined to bid at an auction and your funds are locked in KiwiSaver, you must speak to the real estate agent and your solicitor well before the auction starts. You will need your solicitor to draft an amendment—called a "variation of terms"—to the auction agreement.
You essentially have to ask the seller for permission to either:
Pay a much smaller cash deposit on the day (whatever you have in your normal savings account).
Delay the payment of the deposit until your KiwiSaver funds officially clear.
The seller has to agree to these changes before you are legally allowed to bid. If they say no, you simply cannot participate in the auction.
Talk to the Experts Before You Bid
Navigating the property market with a low deposit requires strategy. A good mortgage adviser will save you from making expensive mistakes and tell you exactly when to hold your cards and when to play them.
At Home Loan Factory, we deal with low-deposit lending every single day. Before you fall in love with an auction property, reach out to our team. We will structure your pre-approval correctly and give you the exact game plan you need to secure the home safely.
