Investor Finance
Cross-collateralisation: why I almost always keep investor loans separate
Most investors don’t realise their loans are cross-collateralised until they try to do something with one of their properties. They want to sell. They want to refinance. They want to release equity to fund the next purchase. And then the bank tells them every property has to be revalued, every loan has to be reassessed, and the whole portfolio has to clear policy at today’s rates.
It’s the moment investors realise structure mattered. Before that, the rate looked fine.
I almost always tell investors I work with to keep their loans separate from the start. There are narrow scenarios where cross-collateralisation has a place... I’ll cover those... but for most investors, separation is the default that protects optionality. This is the first structural decision your finance broker makes for you, and it’s the one most likely to be wrong if nobody’s thought about it.
What cross-collateralisation actually is
Cross-collateralisation is when two or more properties are pledged as security against a loan, or against multiple loans tied to the same lender. The bank holds a mortgage over all the properties. If anything happens to one loan, every property in the security pool can be touched.
The simple version: imagine you own a home worth $900,000 and an investment property worth $600,000. Your home loan is $400,000, your investment loan is $480,000. If they’re cross-collateralised, the bank holds security over both properties for both loans. The total security is $1,500,000, the total debt is $880,000, and the bank looks at the combined LVR of about 59%.
If they’re not cross-collateralised, your home loan is secured against your home only (LVR 44%), and your investment loan is secured against the investment only (LVR 80%). Same numbers, different structure. The structure is what matters when you want to do anything with either property.
Why banks default to cross-collateralisation
Banks default to cross-collateralisation because it’s easier paperwork at their end. One security package, one set of documents, one valuation cycle. From the lender’s risk lens, more security is better, so they happily take both properties even when it isn’t necessary.
It also keeps you locked in. Cross-collateralised loans are harder to refinance because both properties have to leave together, and the discharge fees and valuations cost more. The bank knows this. They’re not doing it to be helpful.
If your previous broker didn’t flag this when the loan was set up, it’s usually because it was the path of least resistance for the application. Not because it served you.
When does cross-collateralisation actually make sense?
Rarely. The clearest case is when a single property’s security on its own doesn’t meet the lender’s LVR threshold, and combining a second property as security pushes the deal into approvable territory. A short-term cross-collateralised structure can buy time while you build equity or wait for a revaluation, with a plan to separate the security later.
There are other situational cases (some construction loans, certain commercial structures, specific guarantor arrangements) where it’s the right call. They’re the exception, not the rule. Even in those cases, the goal is usually to unwind the cross-collateralisation as soon as the structure no longer requires it.
For straightforward residential investment lending, separate is the default. The rest of this article is about why.
Three scenarios where cross-collateralisation bites
1. You want to sell one property
Selling a cross-collateralised property requires the bank to release that property from the security pool. They’ll usually require the remaining property to be revalued, the remaining loan to be reassessed, and the LVR to be checked at today’s policy. If the remaining property has dropped in value, or your serviceability has tightened, the bank may require you to pay down the loan before they’ll release the security. Settlement can’t happen until that’s sorted.
If the loans were separate, selling one property releases its mortgage cleanly at settlement. The other property and its loan continue untouched.
2. You want to release equity from one property
Equity release on a cross-collateralised property requires the bank to revalue every property in the security pool. If one of them has dropped in value, the equity available across the whole pool drops. Even if the property you want to release equity from has gone up substantially, the calculation includes everything.
Separate loans mean separate valuations. The property that’s grown gets credit for its growth. The property that’s flat doesn’t drag the calculation down.
3. You want to refinance one loan to a different lender
This is the killer. Cross-collateralised loans usually have to leave together. You can’t refinance just one of them to a different lender without untangling the whole structure first. Untangling means full revaluations, full credit reassessment at the new lender, and discharge fees on every loan moving across.
If the loans were separate from the start, you can refinance one and leave the other where it is. That’s the entire point of separation.
How to keep your loans separate
It’s a straightforward conversation when the loan is being set up. The bank’s default mortgage documents will often pull both properties into the security pool unless your broker actively requests separate security.
Three things to confirm before settlement:
- Each loan has its own security. Your home loan secured against your home only. Your investment loan secured against the investment only.
- Each property has its own valuation on file with the lender, not a combined valuation across the security pool.
- If you’re using equity from your home as the deposit on the investment, that equity sits in a separate split or sub-loan secured against the home, with its own loan number and its own purpose code.
The third one matters for tax. Borrowed funds used for an investment purpose are deductible. Borrowed funds used for personal purposes aren’t. Mixing the two in a single loan creates a contamination problem your accountant has to untangle later. Setting up clean splits at the start avoids the issue entirely.
What to do if your loans are already cross-collateralised
If you’re already cross-collateralised and the implications above just landed, you’re not stuck. The structure can be cleaned up, usually as part of a broader refinance or restructure.
The cost is real. There are valuation fees on the properties, possible discharge and registration fees, and a credit reassessment is required because the loans are being restructured. Whether it’s worth doing depends on what you’re planning to do next. If you’re holding both properties indefinitely and never planning to sell, refinance or release equity, the structure technically doesn’t bite. If you’re an active investor planning to scale, it almost certainly does.
I’ve restructured cross-collateralised loans for clients more times than I can count. It’s not pleasant work, but it’s straightforward when the next move depends on it.
How I structure my own portfolio
My partner and I hold a seven-property portfolio. Every property has its own loan, secured against itself only. Some are with the same lender, some are with different lenders. Where equity from one property has been used as a deposit for another, the equity sits in a separate split with its own purpose code.
We can sell any single property without touching the others. We can refinance any single loan without touching the others. We can release equity from one property without revaluing six. The structure is the optionality.
That’s what I bring to clients. Not the cheapest rate at the time of application, but the structure that lets them keep moving.
