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Buying·6 min read
How do you buy and sell a property at the same time?
Buying and selling at the same time is common across Sydney City, the Northern Beaches and Inner West, where owners upgrade or downsize within the same market. The legal challenge is coordinating two settlement dates without leaving you homeless or paying twice.
GL
Glenmore Legal
Published July 2026
There's no single legal mechanism for buying and selling simultaneously, it's a coordination problem, solved through settlement timing, finance structuring, and sometimes a contingency clause written into one of the contracts.
Aligning settlement dates
The cleanest approach is negotiating your sale and purchase to settle on the same day, so sale proceeds fund the purchase. This requires close coordination between both conveyancers and often some flexibility from both other parties on the settlement date.
What if the dates don't line up?
If your purchase settles before your sale, bridging finance can cover the gap, secured against both properties temporarily. If your sale settles first, you may need short-term accommodation or a rent-back arrangement with your buyer.
Making a purchase contingent on your sale
A subject-to-sale special condition can make your purchase contract conditional on your existing property selling by a set date. Not all vendors will accept this, particularly in a competitive Sydney property market, but it's worth negotiating if you need the certainty.
Ways to coordinate a simultaneous sale and purchase
- Try to align both settlement dates first
- Bridging finance if your purchase settles before your sale
- A rent-back or short-term lease if your sale settles first
- A subject-to-sale clause if you need the purchase conditional
Frequently asked
What happens if my sale falls through after I've exchanged on a purchase?
This is a real risk of unaligned contracts, which is why a subject-to-sale clause or bridging finance buffer is worth discussing before you exchange on the purchase.
Is bridging finance expensive?
It typically carries a higher interest rate than a standard home loan, so it's best used as a short-term bridge, not a long-term solution.
The bottom line
The earlier you tell your conveyancer you're doing both at once, the more options you have, settlement dates and special conditions are far easier to negotiate before exchange than to fix afterwards.