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Perth is building a small city every year — and it's all happening on the fringe

While the country frets about a housing shortage, one corner of it is pouring concrete like never before. The map of Perth's edge is being redrawn — fast.

SDSamuel DaviesSamuel Davies is a data reporter at KnowYourBlock, covering property, crime and planning across Australia.

Australia can’t stop talking about how few homes it’s building. So it’s worth pointing at the one part of the country quietly doing the opposite — the sandy fringe of Perth, where the cranes and house-frames haven’t stopped for years and the approvals data has exploded.

Take Wanneroo, the sprawling council on Perth’s northern edge. Wanneroo recorded 3,971 dwelling approvals in the 12 months to May 2026, compared with 1,304 in 2020 — a jump of 205%. At an average of about 2.5 residents per dwelling, a single year of that is housing for roughly 9,900 people — close to a whole town the size of Esperance, conjured out of coastal scrub and appearing on the city’s northern edge, year after year.

Where the homes are being approved — Perth’s growth corridor
Map of Perth's fringe councils — Wanneroo, Swan, Rockingham, Armadale, Mandurah, Stirling, Cockburn and Kwinana — shaded by how fast their annual dwelling approvals are growing, each labelled with homes approved per year.
Growth since first year on record:200%+120–200%50–120%under 50%

Shading = growth in annual dwelling approvals vs each council’s first year on record. Council boundaries: ABS ASGS 2021. Basemap: © OpenStreetMap contributors © CARTO.

New dwellings approved in the last 12 months — WA’s busiest councils

And it isn’t one runaway council. The whole growth corridor is surging together — the eight busiest WA councils approved around 15,238 dwellings between them in a single year. The biggest percentage jumps are clustered in the outer south — places like Rockingham (+236%), Mandurah (+175%), Kwinana (+215%) — where paddocks are turning into full-blown suburbs at a pace the eastern capitals can only dream about.

How each council’s approvals have climbed — rolling 12-month dwelling approvals
01,0002,0003,0004,000202120222023202420252026
WannerooSwanRockinghamArmadaleMandurahStirlingCockburnKwinana

Each line is a council’s dwelling approvals over the preceding 12 months, plotted monthly. Source: ABS Building Approvals.

Raw approval counts flatter the big councils — a Stirling or a Cockburn has hundreds of thousands of residents, so it will always show large numbers. The more revealing measure is intensity: how many new homes a council is approving relative to the people already living there. On that score the outer-fringe councils pull sharply ahead.

New dwellings approved per 1,000 residents — last 12 months

Approvals per 1,000 residents (2021 Census population). A settled inner council typically runs low single digits; the fringe runs several times higher.

The gap is stark. Wanneroo is approving about 25 homes for every 1,000 residents a year — against roughly 8 in a settled middle-ring council like Stirling. That’s the difference between a suburb filling in and a frontier being built from scratch.

The engine underneath it is classic Western Australia: a resources economy pulling in workers, a steady drumbeat of interstate and overseas migration and — unlike hemmed-in Sydney — plenty of flat, cheap land to throw houses at. The result is a city expanding outward at both ends, north through Wanneroo and south towards Mandurah.

Thinking about buying into one of these new estates? New growth areas come with their own questions — bushfire mapping, zoning, which schools you’re actually zoned for. Check any of it on the development leaderboard or by searching a specific address.

The numbers: total dwelling units approved per local government area, most recent 12 months (to May 2026), with growth measured against the earliest 12 months on record (to Jun 2020). Per-capita figures use 2021 Census resident populations. Approvals lead construction and some never get built — figures are indicative only. Source: Australian Bureau of Statistics, Building Approvals. This is a point-in-time snapshot (data to May 2026) and is not updated as newer figures arrive.