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Loan options · Property-secured

First mortgage business loans, in three simple steps

First mortgage business loans explained: borrowing against a property with no loan on it, or refinancing the one that is, in three clear steps.

Updated 2 October 2026 · 123 Business Finance editorial team

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Two-storey commercial building with shopfronts on a tree-lined Adelaide street

Quick answer

A first mortgage business loan is secured by the main, first-ranking mortgage over a residential or commercial property. It suits owners whose property has no loan against it, or who want to replace the existing mortgage and draw extra equity for the business. Because the lender is first in line, a first mortgage can support larger amounts, from $20,000 up to $5,000,000, and longer terms than second mortgages or caveats.

Key points

  • The first-ranking mortgage over the property
  • Suits unencumbered property or refinancing the existing loan
  • $20,000 to $5,000,000 against residential or commercial property
  • Often the strongest security position, so it can support bigger amounts
Amounts
$20k – $5m
Position
First ranking
Security
Residential or commercial
Credit issues
Case by case

What is a first mortgage business loan?

When a lender takes a mortgage over a property, it registers its interest on the title. If there’s only one mortgage, it’s the first mortgage. If another lender later takes security behind it, that’s a second mortgage.

The order matters because it decides who gets repaid first if the property is ever sold. The first mortgagee stands at the front of the queue. That safer position is why a first mortgage can usually support a larger loan and a longer term than the positions behind it.

A first mortgage business loan is simply that first-ranking loan, used for a business purpose: working capital, buying equipment, clearing tax debts, buying out a partner or purchasing premises.

When does a first mortgage make sense?

There are two classic situations.

1. The property is unencumbered. You own a home, an investment property or business premises with no loan against it. A first mortgage lets you use that equity for the business without anyone else’s security in the way.

2. You want to refinance and release equity. There’s an existing mortgage, but you’d like to replace it with a new first mortgage that pays out the old loan and releases extra funds for the business. This can be tidier than adding a second mortgage on top.

Situation First mortgage? Alternative
Property owned outright Yes, natural fit Caveat for very short terms
Existing bank loan you’re happy with Maybe not Second mortgage keeps it in place
Existing loan you’d like to replace Yes, via refinance Second mortgage if refinancing costs more
Buying a commercial property Often See commercial property loans

How much can a first mortgage support?

Amounts run from $20,000 to $5,000,000 against residential or commercial property. Three factors set the ceiling:

  • The property’s value, confirmed by a valuation
  • The property type and location, since lenders view a suburban house differently from a specialised industrial site
  • Your exit or repayment plan, whether that’s business income over a long term or a sale or refinance in a shorter one

Lenders won’t lend the full value. They keep a margin to protect themselves if property values move. The size of that margin varies by lender, property and situation, which is why a quick conversation is more useful than any online formula. You can start one in about 60 seconds, with no credit check.

What’s involved in setting one up?

Here’s the typical sequence:

  1. Enquiry and first call. Purpose, amount, property details, existing debts.
  2. Indicative option. A specialist explains what looks possible and what’s needed.
  3. Documents. ID, business details, title and rates information, any existing mortgage statements, and financials if the lender requires them.
  4. Valuation. Arranged through the lender.
  5. Loan and mortgage documents. Signed, usually after independent legal advice.
  6. Settlement. The mortgage is registered and funds are paid, or the old loan is paid out first in a refinance.

Business purpose: what does that mean here?

The loan must be used for the business. Common purposes include buying stock or equipment, working capital, clearing ATO debts, consolidating business debts, fitouts and buying premises. Even if the security is your home, the money has to go to the business. Lenders will ask you to confirm the purpose, and it’s worth keeping records of how the funds are used.

An illustrative example

Illustrative only. Two sisters run a physiotherapy practice and own their consulting rooms outright. They want to open a second clinic. A first mortgage over the existing rooms funds the fitout and equipment for the new site, with a term long enough that repayments fit comfortably within the practice’s income. Because the rooms carried no loan, there was no need to work around an existing lender.

What should I compare between offers?

  • Total cost of finance, including establishment, valuation and legal fees
  • Term and repayment type, such as interest-only for a period or principal and interest
  • Early repayment terms if you might sell or refinance later
  • Conditions, like insurance requirements or restrictions on further borrowing

Our guide to reading a business loan offer walks through each of these in plain English.

Interest-only or principal and interest?

First mortgage business loans can often be structured in different ways, and the repayment type matters as much as the amount.

Principal and interest repayments reduce the loan balance over time. Each repayment is larger, but the debt shrinks steadily and is fully repaid by the end of the term. This suits long-term purposes like buying premises or major equipment.

Interest-only repayments cover the cost of borrowing but don’t reduce the balance for an agreed period. Repayments are lower, which can help cash flow during a growth phase or while waiting for an exit, but the full balance is still owed at the end of the interest-only period.

Some loans start interest-only and switch to principal and interest later. Whichever you consider, ask three questions:

  1. What will repayments be in each phase?
  2. What happens at the end of the interest-only period?
  3. Can I make extra repayments or repay early without penalty?

Matching the structure to your purpose and exit is part of the 1-2-3. If you’re using the loan as a short bridge, see bridging loans; if you’re replacing an existing loan, see business loan refinance.

Thinking of using your property’s equity?

A first mortgage is one of the most straightforward ways to turn property equity into business funding, provided it’s sized sensibly and matched to a clear purpose.

Our approach is simple. The enquiry is short and doesn’t touch your credit file. A real person looks at your situation and calls you; we don’t shop your details around a list of lenders. Help us get it right first time by filling in the form accurately, especially the property’s details, any existing loan and what the funds are for. See what your property could support.

The 1-2-3, in short

  1. 1

    Check the title

    Is the property free of any mortgage, or will the existing loan be paid out as part of the new one?

  2. 2

    Size the loan to the equity

    Start with a realistic value, subtract any loan being refinanced, and leave a sensible margin.

  3. 3

    Match the term to the purpose

    Long-lived uses like buying premises suit longer terms. Bridging and tax debts may suit a shorter first mortgage.

Frequently asked questions

What does 'first mortgage' mean?

It means the lender holds the first-ranking security over the property. If the property is sold, the first mortgage is repaid before any second mortgage or caveat. That priority is why first mortgages can support larger loans.

Can I get a first mortgage on a property that already has a loan?

Yes, if the new loan pays out the existing one. That's a refinance: the new lender becomes the first mortgagee, and any extra equity released can be used for the business.

Can a company borrow against a director's home?

Yes, with the property owner's agreement. The owner gives the security, often alongside a guarantee, and the funds are used for the business.

Do first mortgage business loans need full financials?

Not always. Some private and non-bank lenders focus on the property and the exit plan, with fewer financial documents. The right approach depends on the amount and your situation.

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