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Links Property Finance · Free calculator from a Sydney mortgage broker: Property Ownership Cost Calculator

The repayment is not the only cost. Put a monthly figure on everything else before you commit.

Reviewed by Charles Touma Updated 18 October 2026

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Charles Touma, mortgage broker at Links Property Finance

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The property

Estimates only. Rates, levies and insurance vary by council, building and insurer, and the actual figures for a specific property are in the contract and the strata report. The maintenance allowance is a widely used rule of thumb rather than a prediction.

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What does owning it cost, beyond the loan?

Council rates, strata levies, building insurance, water and a maintenance allowance, which together often add several hundred dollars a month to the repayment.

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Enter the price and your figures to see the monthly and yearly total; the maintenance allowance uses a rule of thumb of about 1 per cent of value a year for a house and less for a unit.

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Where do the numbers come from?

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  • Council rates and water are usually disclosed in the contract or available from the council.
  • Strata levies are in the strata report, which also shows the levy history and whether a special levy is looming.
  • Insurance you quote yourself, and it is worth doing before you commit on anything near a bushland interface or a flood-prone area, where premiums can be materially higher than expected.

What is the maintenance allowance?

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  • The rule of thumb is around one per cent of the property's value a year for a freestanding house, covering everything from gutters to a hot water system that eventually fails.
  • For a strata property it is lower, because the building itself is maintained through your levies, so the allowance covers only what is inside your walls.
  • Neither figure is a prediction; both are a reasonable provision.

Why do lenders care too?

Some lenders include an allowance for property running costs in serviceability, particularly strata levies, which is one of several reasons an apartment with high levies can reduce what you can borrow.

Where levies are unusually high, they are worth raising before an application rather than discovering their effect on the borrowing figure afterwards.

What does this do not include?

The mortgage repayment itself, which the repayments calculator covers, and the one-off costs of buying, which the cost of buying calculator covers.

Together the three give you the complete picture: what it costs to buy, what it costs to borrow, and what it costs to own.

Common questions about ownership cost

How much should I budget for maintenance?

Around one per cent of the property's value a year is the widely used allowance for a freestanding house, less for a strata property where the building is maintained through levies.

In some years you will spend nothing and in others a hot water system and a fence will arrive together, which is precisely why it is provisioned rather than budgeted exactly.

Are strata levies negotiable?

No, they are set by the owners corporation based on the building's budget. What you can do is read the levy history and the sinking fund position before you buy, because a building with an inadequate sinking fund is a building where a special levy is more likely.

Do these costs affect how much I can borrow?

They can. Some lenders include an allowance for property running costs, particularly strata levies, in their serviceability assessment. High levies on an apartment can therefore reduce your borrowing capacity as well as your monthly budget.

What about land tax?

It generally does not apply to your own home in NSW, but it can apply to investment property above a threshold. It is a state tax with its own rules and thresholds, and it is a question for your accountant rather than your broker.

Should I include these in my loan application?

Yes, realistically: the lender compares what you declare against your bank statements and forms its own view, and a repayment that only works if nothing ever breaks is not one that works.

Check the estimate with a broker

Charles can put the running costs beside your borrowing figure so the budget is the real one.

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Charles Touma, mortgage broker at Links Property Finance
Reviewed by Charles Touma Director & Mortgage Broker · MFAA member · Credit Representative 579003 under ACL 389328 About Charles · All calculators

Estimates only, not credit or financial advice. This tool uses general assumptions and cannot see your credit file, verify your income or apply any particular lender's policy. Your position is confirmed in a full assessment.

Official sources for the figures on this page: Revenue NSW, transfer duty. Scheme rules change; the official pages are the final word. Checked against these sources on 12 October 2026.