Average House Size in Australia
Updated 24 September 2026 · Australian Bureau of Statistics, Average Floor Area of New Residential Dwellings (2021-22) + CommSec Home Size Trends
Quick answer
The average new free-standing house in Australia is 232.3 m² (2,500 ft²), per the Australian Bureau of Statistics (2021-22), among the largest new homes in the world alongside the United States. New units and apartments average 137 m² (1,475 ft²), and across all new dwellings the average is about 214 m² (2,303 ft²) (CommSec/ABS, 2023). House size peaked at 245.9 m² in 2008-09 and has eased slightly since. Australia publishes only new-construction floor area, not an all-stock average, so the new-build house figure is the one usually quoted. Australian homes are roughly three times the size of a typical UK new-build.
232.3 m² = 2,500 sq ft
Average new free-standing house in Australia (ABS, 2021-22). Down about 6 percent from the 2008-09 peak of 245.9 m², but still the joint-largest new homes in the world.
New house (2021-22)
232.3 m²
All new dwellings
~214 m²
New unit / apartment
137 m²
Peak (2008-09)
245.9 m²
Average Australian Home Size by Type
| Dwelling type | m² | sq ft |
|---|---|---|
| New free-standing house (2021-22) | 232.3 | 2,500 |
| All new dwellings, houses + units (2023) | 214 | 2,303 |
| New other dwelling: unit / apartment (2021-22) | 137 | 1,475 |
| New free-standing house, peak (2008-09) | 245.9 | 2,647 |
New free-standing house and unit figures: ABS, Average Floor Area of New Residential Dwellings (2021-22; 2008-09 is the series peak). The all-new-dwellings blend of about 214 m2 is CommSec's Home Size Trends Report, built on ABS building-activity data. Australia does not publish an all-stock average dwelling size; every figure here is new construction.
How Australian New-House Size Has Changed
New free-standing houses peaked just before the global financial crisis and have drifted down modestly since, while remaining far larger than anywhere outside the United States. Figures are the average floor area of new free-standing houses from the ABS.
2008-09 (peak)
245.9 m²
2,647 sq ft
The all-time high for the average new free-standing house, the culmination of the pre-GFC building boom.
2019-20
235.8 m²
2,538 sq ft
New houses had eased back only slightly from the peak, still comfortably the largest new homes in the world.
2021-22
232.3 m²
2,500 sq ft
The most recent ABS reading for new free-standing houses. Down about 6 percent from the 2008-09 peak, but still far above every other country except the US.
Source: ABS, Average Floor Area of New Residential Dwellings.
Larger Houses, Smaller Blocks
The bigger change over the last two decades has been in land, not floor area. Across the five mainland state capitals, the average residential block shrank from 602 m² in 2005-06 to 467 m² in 2019-20, a 22 percent fall (ABS). Because house sizes barely moved over the same period, Australian homes now occupy far more of their plots than they used to. Sydney and Perth saw the steepest block-size cuts.
| Capital city | Block 2005-06 | Block 2019-20 | Change |
|---|---|---|---|
| Sydney | 654 m² | 447 m² | -32% |
| Melbourne | 597 m² | 463 m² | -22% |
| Brisbane | 618 m² | 497 m² | -20% |
| Adelaide | 634 m² | 531 m² | -16% |
| Perth | 575 m² | 427 m² | -26% |
Source: ABS, Australians are building larger houses on smaller blocks (average residential site area, five capital cities).
Australia vs the UK and US
| Country | New house | All stock |
|---|---|---|
| Australia | 232 m² | not published |
| United States | 199 m² | 169 m² |
| United Kingdom | 76 m² | 96 m² |
Australia and the US build the largest new homes in the world and are effectively tied at the top. The UK sits far below both: a new Australian free-standing house is roughly three times the size of a typical UK new-build. See the full house size by country ranking, the UK vs Australia comparison, and US home sizes.
Measurement note: how Australia counts floor area
Australia measures to the outer face of external walls, the gross external area approach under the Property Council of Australia Method of Measurement. This adds roughly 3 to 5 percent compared with UK Gross Internal Area, which is measured to the inner face of walls. It also means an integral garage is partly captured in the headline figure, whereas UK EPC floor areas exclude unheated garages. So the raw Australia-versus-UK gap slightly overstates the real difference in usable internal space, though the gap remains very large either way.
Why Australian Homes Are So Large
Cheap suburban land, low-density zoning
For decades, land on the metropolitan fringe was cheap and plentiful, and low-density zoning encouraged detached houses on generous blocks. Even as land has become more expensive and blocks have shrunk, the detached house on its own plot remains the cultural default.
The alfresco and the double garage
Standard Australian house specifications include a covered alfresco dining area (typically 20 to 30 m2) used year-round, and a double or triple garage (around 40 to 55 m2). Both add floor area, and under the PCA measurement method the garage is partly captured in the headline figure. UK new builds rarely include either.
The master suite and open-plan scale
A standard Australian master suite, with walk-in wardrobe and ensuite, runs 25 to 35 m2 for the master zone alone, and open-plan living-dining-kitchen areas of 60 to 80 m2 are common, close to the total size of a UK two-bedroom new-build flat.
First-home-buyer grants tied to new builds
Government grants historically favoured new detached construction, reinforcing demand from volume builders for large, feature-rich homes rather than compact ones.
Frequently Asked Questions
What is the average house size in Australia?
Does Australia build the biggest houses in the world?
How big is the average apartment or unit in Australia?
Are Australian houses getting smaller?
Why does Australia build such large homes?
How does the average Australian house compare with the UK?
Convert an Australian Home Size
232 m² is approximately a singles tennis court (195 m2) with a little extra.
UK vs Australia Property Size
232 m2 vs 76 m2, the full comparison with lifestyle and measurement detail.
Average House Size by Country
Top 30 countries ranked in m2 and sq ft. Australia builds the largest.
Average House Size in the US
The other giant: US new single-family median 2,142 sq ft (199 m2).
UK Home Sizes
The UK equivalent: 96 m2 all-stock, by bedroom, era, and region.
Apartment Sizes by City
Average 1-bed and 2-bed sizes across 12 world cities, including Sydney.
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About the author
Oliver Wakefield-Smith
Founder of Digital Signet, an independent research firm publishing data-led property, planning, and conversion tools. Content is sourced from ONS, Nationwide, RICS, MHCLG planning data, and UK building regulations. Confirm planning and regulatory figures with your local authority or a qualified professional.