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We're a family buying our next home. Our current place isn't sold yet. How does bridging finance compare with waiting until we've sold, and what could make it expensive?
For a family buying your next home in New Zealand before your current home has sold, the key decision is whether the flexibility of buying now is worth the cost and risk of carrying two properties at once.
Bridging finance can help you secure the next home without waiting for your existing one to sell. Waiting until you sell is usually financially safer, but it could mean missing out on a property you really want.
The right choice depends on how much equity you have, whether you can afford both homes temporarily, and how confident you are about selling your current home at a realistic price.
Bridging finance vs waiting to sell
Option 1: Buy now using bridging finance
More flexibility, more risk
You buy the next home before receiving the money from your existing home sale. Your lender temporarily finances the gap, subject to approval.
Advantages
- You can make an offer on a home you love without waiting for settlement of your current home.
- You may avoid temporary accommodation and moving twice.
- You have more control over the timing of your move.
Disadvantages
- You may temporarily have two mortgages, or one mortgage structured to cover both properties.
- Interest and other ownership costs can add up quickly.
- If your current home takes longer to sell, or sells for less than expected, you could face financial pressure.
Option 2: Sell first, then buy
Generally lower financial risk
You sell your current home, establish how much money you'll have available, and then buy your next property.
Advantages
- You know your actual sale proceeds and can set a firmer budget.
- You reduce the risk of paying two sets of housing costs for an extended period.
- You may have more certainty when arranging your next mortgage.
Disadvantages
- Your preferred property might sell to another buyer while you wait.
- You may need temporary accommodation or storage if settlement dates don't line up.
- You might feel pressure to find your next home quickly after selling.
One important distinction: a bridging loan isn't necessarily a separate, short-term loan with a cheap interest rate. In New Zealand, the arrangement can involve temporary lending or restructuring of your existing and new home loans. The rate, repayment requirements and exit conditions depend on your lender and circumstances.
What could make bridging finance expensive?
There are six main things to watch out for.
Interest on the extra borrowing. Bridging finance often uses a floating or variable rate, which may be higher than a standard fixed home-loan rate. You pay for every day you need the additional funds. How bridging finance worksBridging Finance
Paying for two homes at once. Even if the new loan is interest-only, you may still have principal-and-interest repayments on your existing mortgage, plus rates, insurance, utilities and maintenance on both homes.
A slower-than-expected sale. A bridge you expected to need for six weeks could last several months. More time means more interest and a greater strain on the family budget.
Selling for less than expected. If you have to accept a lower offer, you could have less equity available to repay the bridging loan and a larger long-term mortgage than planned. How bridging finance worksThinking about your finances when selling
Loan fees and moving costs. Ask about establishment and valuation fees, legal costs, any costs of restructuring or discharging your existing loan, agent commission, advertising and the possibility of moving twice.
Your existing fixed-rate mortgage. If your current loan is fixed, changing or repaying it early can potentially trigger break costs, depending on how the lending is restructured. Ask your lender whether you can retain or transfer your existing loan. Bridging finance - Buying & selling at the same timeThinking about your finances when selling
A worked example: how much could it cost?
Suppose your family needs an extra $600,000 to buy the next home before your current home sells.
For illustration, assume the bridging portion carries 7% annual interest and is interest-only. This is an example rate, not a quote or a current market-rate claim.
Illustrative interest on $600,000
Per month
$3,500
Per week (approx.)
$808
| Time until sale settles | Interest cost |
| 1 month | $3,500 |
| 3 months | $10,500 |
| 6 months | $21,000 |
| 12 months | $42,000 |
Assumes a constant 7% rate and an unchanged $600,000 balance, with simple interest. Excludes the existing mortgage, new-home loan principal repayments, fees and property running costs. Actual loan structure and charges will vary.
That is the cost of the additional borrowing alone. If you also have a mortgage on your existing home and borrowing for the new home, your total monthly outgoings could be much higher.
Is there a middle ground?
Yes. You don't necessarily have to choose between waiting until your home sells and taking on a completely open-ended bridging loan.
- Negotiate a longer settlement on the new home. This gives you more time to sell before you need to complete the purchase, if the vendor agrees.
- Make your purchase conditional on selling your current home. This can reduce your financial exposure, although a vendor may prefer an unconditional offer.
- Sell first and negotiate a later move-out date. A suitable settlement arrangement may let you secure your sale proceeds while giving you more time to find the next property.
- Ask about closed bridging finance. If your existing home is already sold unconditionally but the settlement dates don't line up, the lending gap is more predictable than when your home hasn't sold at all.
- Compare lenders and loan structures. Ask about the bridging rate, maximum term, fees, interest-only period and what happens if the sale takes longer than expected. Bridging finance - Buying & selling at the same timeBridging FinanceHow bridging finance works
How I'd approach this as a family
Before making an offer, I'd want three numbers from your mortgage adviser or bank:
- Your peak debt: the maximum total borrowing you'll have while you own both homes.
- Your monthly carrying cost: all loan repayments, rates, insurance and essential household expenses during the overlap.
- Your worst-case sale proceeds: what you'd have left after the mortgage, agent fees and legal costs if your current home sells for less than hoped.
The most important test is whether you can comfortably handle a delayed sale without being forced to accept a poor offer. If the numbers only work when your current home sells quickly at the top of its estimated range, bridging finance is much riskier.
For New Zealand-specific guidance, the government's Settled.govt.nz guide to selling and managing finances is a useful starting point.
Want to compare it against your own numbers?
I can help you estimate the likely cost of bridging versus waiting. The most useful starting point is:
Optional — approximate figures are fine. These details help estimate the gap rather than determine loan approval.
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Captured 11 October 2026