Family home, investment property or commercial premises: which should secure the loan?

Plenty of business owners have more than one property: the family home, perhaps an investment unit, perhaps the premises the business trades from. When a second mortgage is on the table, the question “which one?” matters as much as “how much?” It decides what’s at stake, who has to sign, and how much can sensibly be raised.

Which property would hurt least to lose?

It’s an uncomfortable way to frame it, but it’s the right starting point. A second mortgage is secured on the property. If the plan works, the property is untouched. If it doesn’t, that property is the one exposed.

For most families, the order of comfort runs something like this:

1. Business premises the business owns, where the loan and the security relate to the same enterprise.
2. An investment property, where a forced sale would hurt financially but wouldn’t uproot the household.
3. The family home, where the consequences reach everyone who lives there.

That’s not a rule. Some investment properties are the household’s retirement plan; some business premises are worth more to the business than any loan. But thinking in this order stops the family home being the default just because it has the most equity.

Does the property have enough equity for a real cushion?

Once you’ve identified the least-exposed property, check that it can carry the loan with room to spare. The test isn’t whether you can squeeze the amount out at the top of the range. It’s whether, after borrowing, there’s a comfortable share of value left unencumbered.

Here’s how the same need can look on three different properties (illustrative only):

Property	Value	Owed now	Need	Combined LVR after	Comment
Family home	$1,200,000	$500,000	$200,000	58%	Plenty of cushion, but it’s the home
Investment unit	$650,000	$380,000	$200,000	89%	Too stretched to be sensible
Business premises	$900,000	$250,000	$200,000	50%	Comfortable for commercial security

Illustrative only. Valuations, lender appetite and amounts depend on your circumstances.

In this example, the investment unit is out because the cushion is too thin, and the business premises do the job without involving the home. Try your own numbers in the equity decision helper, which applies lower planning bands for commercial property.

How is commercial property treated differently?

Commercial property, such as shops, offices, warehouses and factory units, usually takes longer to sell than a house, has a smaller pool of buyers, and its value depends on leases and location. Lenders reflect that by lending at lower combined LVRs. So a commercial property worth the same as a house typically supports a smaller second mortgage.

A few things to have ready if commercial premises are the security:

• Any leases, including whether a tenant is a related party (your own business, for example).
• Whether the premises are vacant or tenanted, and how long the tenancy runs.
• Any specialised use, such as a service station or a purpose-built facility, which can narrow the market for the property.

If the second mortgage is paying for a fit-out of the same premises, that can be a neat fit, because the improvement and the security are linked.

What changes when the family home is the only option?

If the home is the only property with enough equity, that doesn’t make a second mortgage wrong. It raises the bar. We’d want to see a smaller amount, a clearer exit and full agreement from everyone on the title. Our page on protecting the family home sets out practical safeguards.

There’s also a tax angle worth raising with your accountant. The ATO’s guidance on the main residence capital gains tax exemption explains that using part of your home to earn income can affect the exemption. Borrowing against the home for business doesn’t by itself change how the home is used, but if the plan involves running the business from home or renting part of it, ask the question before you commit.

If you’ve worked out which property makes most sense, you can ask a specialist to test it in a short enquiry with no credit check.

Who has to sign for each property?

The property you choose determines who has to agree:

• Jointly owned home: you and every co-owner. See talking it through with a co-owner.
• Investment property in your sole name: you alone, although a spouse may still want a say.
• Property owned by a family member: they would provide a guarantee and mortgage. See guarantor property.
• Property in a company or trust: the company’s directors or the trustee, under the entity’s own rules, which can be a cleaner fit when the borrower is the same business.

A note on using two properties

Sometimes no single property has enough equity for a comfortable loan, and two are offered together. That spreads the load but doubles what’s at stake. If you’re considering it, ask whether one property could be released once part of the loan is repaid, and whether borrowing less on one property would be the better answer.

Choose carefully, then talk to someone

Picking the property is a decision worth getting right before any forms are filled in. When you’re ready, send a short enquiry with the property you have in mind and the alternatives you’re weighing. One specialist reads it, nobody runs a credit check at that stage, and your details aren’t passed around. Be as accurate as you can about each property’s value, what’s owed and who’s on the title. It means we can tell you on the first call which option is realistic.

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