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Second mortgages

How a second mortgage works for tradies and builders

A second mortgage is a loan secured against property you already own that ranks behind your existing home loan, so you can borrow against your equity without refinancing the first loan. For tradies and builders it's one of the fastest ways to raise business money, with funding in as little as 24 hours in some cases.

Construction Finance Online · Updated 26 September 2026 · 7 min read

If you own a home or investment property with equity, you’re probably sitting on the quickest business funding you’ll ever find. A second mortgage lets you use that equity without touching your existing home loan. Here’s exactly how it works, step by step, and when it makes sense for a tradie or small builder.

Key takeaways

  • A second mortgage is secured against property you already own and ranks behind your current home loan.
  • Your existing home loan stays untouched. No refinance, no break costs on that loan.
  • No financials or cash flow records are needed, and bad credit is considered.
  • Funding can happen in as little as 24 hours in some cases, typically a few days once valuation and documents are in.
  • Terms are typically 1 to 12 months, so you need a clear plan to repay.

What is a second mortgage?

When you bought your home, your lender registered a mortgage on the title. That’s the first mortgage, and it gets paid first if the property is ever sold. A second mortgage is another loan registered on the same title, ranking second. The second lender is protected by whatever equity is left after the first mortgage.

Security can be your home, an investment property, commercial property or land with equity. It can also be a property owned by a guarantor, such as a family member or business partner who’s willing to support the loan.

One important point: the loan is secured against existing property. We don’t lend against the value of a build you haven’t finished yet.

How much equity do I have?

Equity is the difference between what the property is worth and what you owe on it.

Example (hypothetical):

Amount
Property value$1,200,000
Home loan balance$650,000
Equity$550,000

You can’t normally borrow every dollar of that equity, because lenders keep a buffer. How much of it can be used depends on the property type, its location and your plan to repay. A lending specialist will give you a realistic figure after a short chat.

How does a second mortgage work, step by step?

  1. Enquire online. Fill in the 60 second form with the amount, the property and what the money’s for. It won’t affect your credit score.
  2. Talk it through. A lending specialist calls you back to understand the purpose, the security and how you’ll repay.
  3. Indicative offer. If it stacks up, you’ll get an outline of the loan amount, term and costs, priced on your circumstances.
  4. Valuation. The lender arranges a valuation of the property. For some loans this can be fast tracked.
  5. Documents. You provide ID, the property details and your current home loan statement. No tax returns or financials needed.
  6. Loan documents signed. You sign the loan and mortgage documents, usually with independent advice where required.
  7. Settlement and funding. The mortgage is registered on title and the money is paid into your account. This can be as little as 24 hours from approval in some cases.
  8. Repay. You repay by the end of the term from your planned exit, such as progress claims, a property sale or a refinance.

Does my first lender need to know?

Often the second lender will notify the first mortgage holder, and some home loan contracts require the first lender’s consent for another mortgage on the title. Our lending team will check this as part of the process, and it rarely stops a deal going ahead. It’s one of the reasons it helps to have your current home loan statement handy.

What do tradies and builders use second mortgages for?

  • Paying an ATO debt or overdue BAS before it turns into a bigger problem
  • Buying materials in bulk for signed jobs
  • Covering wages while waiting on progress claims or retention
  • Settling on a block of land for a small build
  • Finishing a build that’s run over budget
  • Buying used plant or a ute at auction
  • Rolling several expensive debts into one

It’s for business purposes, not personal spending. See our fast second mortgage page for more on how we fund builders and tradies.

Example: A roofer in Adelaide gets a letter from the ATO about a tax debt that’s grown to $140,000. His company has had a rough year on paper, so the bank won’t touch it. He owns his home with plenty of equity. A 9 month second mortgage clears the ATO debt, and he repays it as his next two big commercial jobs are paid.

Second mortgage vs caveat loan vs first mortgage

Second mortgageCaveat loanFirst mortgage
WhereAll states and territoriesVictoria onlyAll states and territories
SecurityRegistered mortgage behind your home loanCaveat lodged on titleRegistered mortgage, ranks first
Existing home loanStays in placeStays in placePaid out or property owned outright
Best forMost secured borrowingVery fast Victorian dealsProperties with no loan, or refinancing the first loan

Second mortgages are by far the most common secured product. In Victoria, some builders use a caveat loan for speed. If the property has no loan on it, or you want to replace your current loan, a fast first mortgage may suit better. For a detailed comparison, read second mortgage vs caveat loan.

What does a second mortgage cost?

Every loan is priced on your circumstances: the property, the loan size, the term and your exit plan. We find the sharpest rate available for your situation and set out every cost clearly before you sign. The real comparison is against the cost of not acting, such as ATO penalties, a lost job or a stalled build.

What should my exit plan look like?

Because terms are typically 1 to 12 months, the lender wants to see how the loan will be repaid. Common exits for tradies and builders are:

  • progress claims or final payments on signed jobs
  • the sale of a property or completed unit
  • refinancing to a longer term loan once your books are up to date
  • a known payment such as a retention release or insurance payout

Be honest and realistic about timing. Building in a few weeks of buffer is always smart.

Key facts

  • Loan size: $20,000 to $5 million
  • Security: existing property you or a guarantor own
  • Speed: as little as 24 hours in some cases; typically a few days once valuation and documents are in
  • Term: typically 1 to 12 months
  • Paperwork: no financials or cash flow records needed
  • Credit: bad credit considered

Ready to see what your equity can do?

It takes about 60 seconds to see if you qualify. There’s no cost to enquire, it won’t affect your credit score, and a lending specialist will call you back to walk you through the numbers. We’ll tell you quickly if we can help.

Frequently asked questions

What is a second mortgage in simple terms?

It's a second loan secured against a property that already has a mortgage. Your existing home loan stays as it is, and the second lender takes security behind it, based on the equity you have.

Do I have to refinance my home loan to get a second mortgage?

No. That's the main advantage. Your current home loan, its repayments and its features stay the same, and the second mortgage sits alongside it.

How much can I borrow on a second mortgage?

It depends on the property's value, what you owe on the first mortgage and your plan to repay. Loans range from $20,000 to $5 million, and a lending specialist will work out a realistic figure with you.

How fast can a second mortgage be funded?

In as little as 24 hours in some cases, and typically within a few days once the valuation and documents are in.

Is a second mortgage the same as a caveat loan?

No. A caveat loan is secured by lodging a caveat on the title rather than registering a mortgage, and we only write caveat loans in Victoria. In every other state and territory a second mortgage is used.

Can I get a second mortgage with bad credit?

Bad credit is considered. Because the loan is secured against property, the lender focuses mainly on your equity and how you'll repay.

Need money on site fast?

One short form. A lending specialist calls you back. Enquiring won't affect your credit score.

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