When you buy a second property, your bank might suggest securing the new loan against both your home and the new property. That's cross-collateralisation. It sounds harmless, and it can make the application easier. But it often causes problems later.
What it is
Cross-collateralisation (or "crossing") means using more than one property as security for one or more loans with the same lender.
Example: - Home worth $900,000, loan $400,000 - Investment worth $650,000, loan $650,000 - Both properties secure both loans. Total security $1.55 million, total debt $1.05 million.
The lender looks at the whole package rather than each property separately.
Why lenders like it
- More security for the bank
- It's simpler to set up
- It keeps you with that lender
The problems for you
1. Selling becomes harder
If you sell one property, the lender can revalue the other and decide how much of the sale proceeds must go to reducing debt. You may not get the cash you expected.
2. Refinancing is complicated
To move one loan to a new lender, you may need to untangle the whole structure, with new valuations and approvals for every property.
3. One valuation affects everything
If one property falls in value, the bank can reassess the whole group.
4. The bank has more control
Your equity is tied up, limiting your options for future purchases.
The better alternative: stand-alone securities
Instead:
- Take an equity loan against your home for the deposit and costs of the investment
- Take a separate investment loan secured only by the investment property
Each property secures its own loans. You can sell, refinance or restructure one without affecting the other.
You can even use different lenders for each property.
Can you uncross existing loans?
Usually yes. It typically involves:
- Valuing each property
- Restructuring loans so each is secured by one property
- Sometimes refinancing one property to another lender
It depends on your equity and serviceability. We can review your structure and suggest the cleanest path.
When crossing might be acceptable
There are limited cases, such as short-term bridging finance or when you have so much equity it doesn't matter. Even then, it's worth discussing alternatives.
Frequently asked questions
Will my bank cross my loans automatically?
Some do if you don't ask otherwise. Always check the security structure in your loan documents.
Does crossing affect my interest rate?
Not directly, but it affects flexibility.
Is crossing the same as a family guarantee?
Similar idea, different purpose. A family guarantee uses a family member's property as limited security for your loan.
Worried your loans are crossed? Call Finfident on 0424 545 654. We'll review your structure and show you how to untangle it.
This article is general information only and doesn't take into account your objectives, financial situation or needs. Figures, rates and scheme rules are current as at October 2026 and can change. Finfident Finance Brokers (ABN 94 679 280 801) is Credit Representative 569374 of Outsource Financial Pty Ltd (ACN 131 090 705), Australian Credit Licence 384324.