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First mortgage business loans: borrowing with first claim on the property

First mortgage business loans explained: borrowing against unencumbered property or refinancing an existing loan, who they suit, and what lenders assess.

Updated 2 October 2026 · Fast Small Business Loans editorial team

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Seller handing keys to the new owner across the counter of an established business

Quick answer

A first mortgage business loan is secured by a property where the lender holds first claim — usually because the property is owned outright or the loan refinances the existing mortgage. Because the lender is first in line, first mortgages can support larger amounts and longer terms than second mortgages. They suit buying a business, major fit-outs, expansion and consolidating debts, within the $20,000 to $5,000,000 property-secured range.

Key points

  • The lender is first in line on the property's title
  • Common when property is owned outright or the existing loan is refinanced
  • Supports larger amounts and longer terms than a second mortgage
  • Residential or commercial property can be used
Ranking
First on title
Amounts
Within $20,000 to $5,000,000
Property
Residential or commercial

When a business milestone is large and property is part of the picture, the first mortgage is usually the strongest form of security available. It’s the structure lenders are most comfortable with, because if anything ever went wrong, they would be first in line to be repaid from the property. For a small-business owner, that comfort can translate into larger amounts and more workable terms.

What makes a mortgage “first”?

Mortgages are ranked on the property’s title. The lender registered first has first claim on the proceeds if the property is sold. You’ll typically see a first mortgage business loan in two situations:

  1. The property is unencumbered. You (or a director) own it outright, so the business lender becomes the first mortgagee.
  2. The loan refinances the existing mortgage. The new lender pays out the current loan and lends extra for the business, taking first position.

If you’d rather keep your existing home loan untouched, a second mortgage business loan sits behind it instead.

First mortgage vs second mortgage at a glance

First mortgageSecond mortgage
Ranking on titleFirstBehind an existing loan
Existing loanNone, or refinancedStays in place
Typical sizeLarger amounts possibleLimited by remaining equity
Typical termCan be longerOften shorter
PaperworkPayout of any existing loanConsent or notice to first lender may apply

What milestones suit a first mortgage?

  • Buying an established business, where goodwill needs strong security behind it
  • Major fit-outs or second locations that go beyond what trading history supports
  • Consolidating business debts into one facility
  • Buying out a partner or restructuring ownership
  • Long-term working capital for a business that’s growing quickly

How is the amount worked out?

The lender considers the property’s value and lends up to a proportion of it — the loan-to-value ratio, or LVR. The acceptable LVR depends on the property type, location, the lender and whether the loan is short or long term. If there’s an existing loan being refinanced, that’s paid out first, and the remaining amount is what’s available to the business.

Illustrative example: A plumber owns a small commercial unit outright, from which he runs his business. He wants to buy a competitor’s business in the next suburb. A first mortgage over the unit funds the purchase price beyond his savings, and his existing trading plus the acquired business’s history support the repayments.

Our how much can I borrow page walks through LVRs with simple illustrative numbers.

Own property and planning a big move? Tell us about it — a specialist will tell you whether a first or second mortgage fits better, and enquiring won’t touch your credit file.

What do you need to apply?

  • Property details: address, type, approximate value, and a rates notice
  • Statements for any existing loan to be refinanced
  • ID for all borrowers and guarantors
  • ABN and business bank statements
  • What the funds are for, with quotes or contracts where relevant
  • For longer loans: financial statements or tax returns showing repayment capacity

How fast can it happen?

Property-secured loans can move quickly once paperwork and checks are complete: $20k to $250k possible same day and up to $5m possible within 24–48 hours. Refinancing an existing loan adds a payout step with the current lender, so build that into your plans if you’re working to a settlement date.

Things to weigh up

  • Costs of switching. Refinancing may involve discharge fees on your current loan and setup costs on the new one. Business.gov.au suggests checking for exit fees and making sure any savings justify the switch.
  • Term and repayments. Longer terms reduce repayments but raise the total cost.
  • Your home. If the property is your home, think carefully about the risk, and seek independent advice where appropriate.
  • Guarantees. A director offering property usually also gives a personal guarantee. See security and personal guarantees.

First mortgage or something else?

A first mortgage isn’t always the best answer. If the amount is modest and the business trades well, an unsecured loan avoids involving property at all. If you need money very quickly for a short period, a caveat loan may suit. Our secured business loans overview compares the options side by side.

When first-position security makes sense

First-position security tends to earn its keep on bigger, longer milestones — the ones where a few extra years of term or a larger limit genuinely change the business’s prospects. For smaller or shorter needs, the extra paperwork of refinancing can outweigh the benefit, and a second mortgage or unsecured facility may be the better tool. A specialist can lay the options out side by side so you can see the trade-offs in plain numbers.

Commercial versus residential security

Both residential and commercial property can secure a first mortgage business loan, but they’re assessed differently. Commercial property values depend more on the tenancy, lease terms and use, and lenders may apply lower loan-to-value limits. If the commercial property is your own business premises, lenders will consider how the property and the business depend on each other. Residential property is often more straightforward to value. A specialist can explain how your particular property is likely to be viewed.

Talk to us about a first mortgage loan

Tell us about the property, any existing loan and the milestone you’re funding. A real person will map out whether a first mortgage is the right tool and what it would take. Asking doesn’t involve a credit check, your details aren’t spread around the market, and accurate figures for the property and purpose mean we can match you properly from the outset. Check your first mortgage options.

Frequently asked questions

What's the difference between a first and second mortgage?

A first mortgage gives the lender first claim on the property if it's sold. A second mortgage sits behind an existing first mortgage, so it's repaid only after the first lender. That ranking affects how much can be borrowed and how the loan is priced.

Do I need to own the property outright?

Not necessarily. If there's an existing loan, a new first mortgage can refinance it and include extra funds for the business, provided there's enough equity.

Can commercial property be used?

Yes. Both residential and commercial property can secure a first mortgage business loan. Commercial property may be assessed differently depending on its type, location and tenancy.

Will refinancing my home loan affect its terms?

It can. Replacing your existing mortgage with a business-purpose first mortgage changes the lender, terms and costs. A second mortgage may be simpler if you want to leave your current loan alone.

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