Quick answer
A mortgage is a security interest over land or property that a borrower gives a lender to secure a loan. In Australia it's registered on the property's title with the state or territory land registry, and it lets the lender sell the property if the loan isn't repaid. The loan and the mortgage are separate documents. For businesses, a mortgage over a home or commercial building is one of the most common ways to secure larger, longer and cheaper funding.
Key points
- Strictly, the mortgage is the security; the loan is a separate contract
- Registered on the title with the state land registry, usually lodged electronically
- Priority between lenders generally follows the order of registration
- Residential property secures a large share of Australian small business lending
- Not the same as a chattel mortgage, which covers vehicles and equipment
Most Australians use “mortgage” to mean their home loan, but in lending the word has a narrower meaning. A mortgage is the security, not the money: a registered interest over land that the owner grants to a lender so the lender can recover what it’s owed by selling the property if repayments stop.
The loan and the mortgage are two different things
When a business borrows against property, two sets of documents are usually signed. The loan agreement covers the amount, term, repayments, fees and what counts as default. The mortgage links that debt to a specific property and sets out the lender’s rights over it.
That separation explains a few things owners find surprising. A guarantor can sign a mortgage over their own property without borrowing anything. A mortgage can stay on a title after the loan is paid off, until the lender lodges a discharge of mortgage. And a single mortgage can secure several debts if it’s written as an “all-monies” mortgage, which is common with banks.
How a mortgage gets onto the title
Australia uses the Torrens title system, run separately by each state and territory. A mortgage only becomes a registered security once it’s recorded on the title by the relevant land registry, such as NSW Land Registry Services, Land Use Victoria, Titles Queensland or Landgate in Western Australia. In NSW, mortgages must generally be lodged electronically.
Registration matters because it sets priority. NSW’s registry guidelines state that the date and time a mortgage is registered determines its initial priority, which can later be changed by a formal postponement. The first registered lender is the first mortgage holder and is repaid first from any sale; a lender registering afterwards takes a second mortgage and is paid from what’s left.
Why mortgages are so central to business lending
Property is the security lenders like best, and the numbers show it. The RBA’s October 2025 Bulletin reported that a little under half of small-sized SME loans are secured by residential property, and that a typical new loan backed by a home is several times the size of one backed by vehicles, equipment or other assets (the RBA puts the multiple at roughly 4.5). Fully unsecured lending has stayed below 5% of SME credit in recent years.
For the borrower, the trade is simple: offering a mortgage usually unlocks a bigger amount, a longer term and a lower total cost than unsecured finance, in exchange for putting the property on the line.
Mortgage or chattel mortgage?
| Mortgage (real property) | Chattel mortgage | |
|---|---|---|
| Secured over | Land and buildings | Vehicles, machinery, equipment |
| Where it’s recorded | State or territory land registry | The national PPSR |
| Typical business use | Property-backed loans, refinancing, acquisitions | Buying a ute, truck or plant |
| Learn more | First mortgage business loans | Chattel mortgage |
An example
A Newcastle physiotherapy clinic needs $350k to fit out a second location. The owners’ home is worth $1.2m with $480k left on the home loan. Their bank, which already holds the first mortgage, is the natural first stop and often the cheapest; it reviews the clinic’s financials and agrees to increase the facility under the existing mortgage. Had the bank declined because the clinic’s first-year figures were thin, a non-bank lender could have taken a second mortgage behind the bank instead, provided the combined borrowing stayed within its LVR limit.
Sitting on equity you haven’t used? See what it might unlock for the business.
Related terms
Mortgagor (the owner granting the mortgage), mortgagee (the lender holding it), registered mortgage and Torrens title. If the bank has turned down a property-backed request, business loans against your home sets out the next options.
Turning property into business funding
A mortgage is often the key that opens up the larger, longer loans a growing business needs. If you’re weighing that up, our form covers the property’s value, the debt already on it and your purpose for the funds, and it’s done within a minute or so. At the enquiry stage your credit file isn’t looked at. Your application isn’t broadcast to lenders far and wide; a specialist here works through it personally and gives you a call. Accurate figures on value and current debt let us suggest the right mortgage position on the very first call.
Frequently asked questions
Is a mortgage the same as a home loan?
Not strictly. The home loan is the money you borrow. The mortgage is the security document that gives the lender rights over the property until the loan is repaid. In everyday speech people use the words interchangeably.
Can I use my home mortgage to secure a business loan?
Yes. Many business loans are secured by a mortgage over the owner's home, either by increasing the existing loan or by adding a second-ranking mortgage behind the current lender. The property is at risk if the business loan isn't repaid, so the decision deserves careful thought.
Who are the mortgagor and the mortgagee?
The mortgagor is the property owner who gives the mortgage, usually the borrower or a guarantor. The mortgagee is the lender who receives it and holds the security.
What happens to the mortgage when the loan is repaid?
The lender signs a discharge, which is registered with the land registry so the mortgage comes off the title. Until it's discharged, the mortgage stays on the title even if the balance is zero.
What is an all-monies mortgage?
A mortgage that secures every amount the borrower owes that lender, not just one loan. It means a home mortgage could also secure a business overdraft or guarantee with the same lender, which is worth checking before you sign.