Average Australian Mortgage Size in 2025
According to the latest lending indicators from the Australian Bureau of Statistics (ABS), the average mortgage size for owner-occupier dwellings is $694,000 as of September 2025. Values have decreased by $16,000 from June 2025. However, compared to September of last year, the average mortgage size has increased by $52,000 or 8.1%.
Looking into individual states and territories, it's evident that New South Wales has the highest average mortgage size in the country at $828,000. It represents an increase of 1.59% from June 2025. When compared to the same time last year (September 2024), the growth is more significant at 6.29%.
The lowest average mortgage can be found in the Northern Territory. It has a recorded average mortgage size of just $481,000, which is $3,000 lower than what was recorded in June 2025. Although the Northern Territory did see a substantial $46,000 increase when compared to September 2024.
On average, new loan commitments for housing rose 6.4%, with values rising 9.6% in the September 2025 quarter. Meanwhile, new owner-occupier loan commitments rose by 2.0% while values increased by 4.7%. Borrower activity is typically affected by interest rate hikes, mortgage sizes, property prices, and other factors.
Average Australian mortgage size in 2025
The table below details the average loan sizes for owner-occupier dwellings across Australia.
| Region | September 2024 | June 2025 | September 2025 | Quarterly Change | Annual Change |
|---|---|---|---|---|---|
| Australia | $642,000 | $678,000 | $694,000 | +$16,000 | +$52,000 |
| New South Wales | $779,000 | $815,000 | $828,000 | +$13,000 | +$49,000 |
| Victoria | $618,000 | $639,000 | $647,000 | +$8,000 | +$29,000 |
| Queensland | $609,000 | $662,000 | $687,000 | +$25,000 | +$78,000 |
| South Australia | $556,000 | $597,000 | $616,000 | +$19,000 | +$60,000 |
| Western Australia | $558,000 | $619,000 | $633,000 | +$14,000 | +$75,000 |
| Tasmania | $455,000 | $483,000 | $484,000 | +$1,000 | +$29,000 |
| Northern Territory | $435,000 | $484,000 | $481,000 | -$3,000 | +$46,000 |
| Australian Capital Territory | $617,000 | $636,000 | $628,000 | -$8,000 | +$11,000 |
Source: Lending indicators from the Australian Bureau of Statistics, September Quarter 2025
As you can see, there have been significant increases in average mortgage sizes in all states and territories over the course of a year. The most notable increase in average mortgage size is in Western Australia and Queensland, where both states saw an increase of over $70,000.
New South Wales continues to have the highest average loan size in the country, seeing significant growth both quarterly and annually. The states with the least growth quarterly are the Northern Territory and the Australian Capital Territory, falling $3,000 and $8,000, respectively. The states with the least annual growth are Victoria and Tasmania.
Rate changes and property prices heavily affect buyer activity, especially in popular real estate markets like Sydney and Melbourne. Buyer activity may pick up or further decline depending on cash rate changes.
Repayments for the average Australian mortgage size
Knowing the average mortgage size helps potential borrowers see how much their home loans can cost. Using the average loan size per state in 2025, we've calculated estimated repayments below so you can have an idea of the total cost of your mortgage.
The computation below is based on a principal and interest loan at 5.29% (p.a. variable home loan) interest over a 30-year term. The table shows the estimated total interest over the full 30-year loan term and approximate repayments.
| Region | Average Mortgage Size | Monthly Repayment | Total Interest |
|---|---|---|---|
| Australia | $694,000 | $3,850 | $691,820 |
| New South Wales | $828,000 | $4,593 | $825,403 |
| Victoria | $647,000 | $3,589 | $644,972 |
| Queensland | $687,000 | $3,811 | $684,843 |
| South Australia | $616,000 | $3,417 | $614,068 |
| Western Australia | $633,000 | $3,511 | $631,013 |
| Tasmania | $484,000 | $2,685 | $482,481 |
| Northern Territory | $481,000 | $2,668 | $479,490 |
| Australian Capital Territory | $628,000 | $3,483 | $626,032 |
The calculations above are only estimates of what your loan repayments could look like based on the average Australian mortgage sizes. When you take out a new loan, it may be higher or lower than the figures stated above.
If you'd like to calculate your potential repayments using a different interest rate, repayment frequency, loan type, or loan term, you can use loans.com.au's online home loan calculator.
Quick recap: Home loans in Australia (September 2025)
- The average mortgage size in Australia is $694,000.
- The state with the highest mortgage size is New South Wales, with $828,000, while the Northern Territory has the lowest at $481,000.
- Western Australia and Queensland had the largest increase in average mortgage size compared to the same time last year.
- Queensland and South Australia had the biggest quarterly increase in average mortgage size.
- Mortgage sizes have all increased compared to the same time last year.
- Average monthly mortgage repayments are $3,850 (5.29% interest over a 30-year term).
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About the article
As Australia's leading online lender, loans.com.au has been helping people into their dream homes and cars for more than 10 years. Our content is written and reviewed by experienced financial experts. The information we provide is general in nature and does not take into account your personal objectives or needs. If you'd like to chat to one of our lending specialists about a home or car loan, contact us on Live Chat or by calling 13 10 90.
