How Much Does It Cost to Build a House in Perth, WA (2026)?

Industry data puts Perth building costs at $2,300–$4,750 per m² before siteworks and selections (industry estimate). At Residential Attitudes, build-only pricing starts from $356,000 for single-storey designs and from $582,000 for double-storey designs (build-only), with complete house-and-land packages from $685,000. We believe in honest pricing, so you know what you are working with. Current as of June 2026.

The biggest mover in Perth's 2026 building market is land. New block prices have climbed to around $329,000, a 34% jump in a single year (UDIA WA, 2024 data). That means your total project cost sits well above the building price on its own, so it pays to look at the build and the land together from the start.

On this page we break down what a Perth build actually costs in 2026: the per-square-metre ranges, costs by home size, single versus double storey, and the extras that sit on top of a build-only price. Where we quote our own figures, they are honest from-prices, current as at May 2026 and subject to change. Talk to us for a quote on your block.

Here are costs to the costs to expect when building a house in Perth for 2026.

Industry estimate, per m² before siteworks and selections. Source: WA building-industry data, 2024.

Residential Attitudes indicative from-prices, current as at May 2026 and subject to change.

JWH Group, one of Western Australia's largest home-building groups, reports these figures reflect current market conditions across Perth's many suburbs.

New land median prices hit $329,000 in 2024, a 34% jump on the year before (UDIA WA, 2024 data). As a result house-and-land packages now start above $685,000.

Time is the second factor. Western Australia detached homes took 15.9 months from approval to completion in 2023–24, against a national average of 12.7 months (industry estimate). The longer a build runs, the more carrying costs and project financing add up.

There is a bright spot. WA building permits take just 10 business days for certified applications and 25 business days for uncertified ones (industry estimate), faster than most other states, so the front end of a Perth build moves quickly.

New land median prices reached around $377,000 in 2025, up 15% on the year before (UDIA, State of the Land 2026). Annual growth has eased from the 34% spike of 2024, but prices are still climbing, and land remains the main reason house-and-land packages start higher than the build alone. It is the cost most buyers underestimate.

Time is the second factor. Western Australia detached homes took about 15.5 months from approval to completion in 2024–25, the longest of any state, against a national average near 11.5 months (Master Builders Australia, 2024–25). Build times did start to ease in 2024–25 for the first time since the pandemic, but the longer a build runs, the more carrying costs and financing add up.

There is a bright spot. WA building permits take just 10 business days for certified applications and 25 business days for uncertified ones (WA Building Act 2011), faster than most other states, so the front end of a Perth build moves quickly.

Cost moves with size, storeys and how you finish the home, so the per-square-metre range is wide. The sections below work through the most common Perth configurations: 3-bedroom, 4-bedroom, 4x3, 5-bedroom and double-storey. Each one shows the indicative per-m² band for that size alongside our build-only from-price, so you can sense-check any quote you receive.

Quick answer: A 3-bedroom home in Perth typically falls in the 140–180 m² range, which works out to roughly $322,000–$855,000 on the industry per-m² band ($2,300–$4,750 before siteworks and selections). Residential Attitudes single-storey build-only pricing starts from $356,000.

The 3x2 layout (3 bedrooms, 2 bathrooms) is a practical fit for first-home buyers and young families who want a well-designed home from an established builder. As a concrete example, our Crouching Tiger design (3 bed, 2 bath, 211 m²) starts from $424,510 build-only, current as at May 2026.

Once you add siteworks and your selections, plan for a higher total than the build figure alone. We will walk you through where those numbers land for your block.

Quick answer: A 4-bedroom home in Perth usually sits in the 180–240 m² range, which lands at about $414,000–$1,140,000 on the industry per-m² band ($2,300–$4,750 before siteworks and selections). Residential Attitudes build-only pricing starts from $356,000 for single-storey and from $582,000 for double-storey.

The 4x2 (4 bedrooms, 2 bathrooms) is Perth's most popular family layout, with the resale appeal and flexible living that growing families look for. Where your build lands inside that band depends on size, single or double storey, and the level of finish you choose.

Add siteworks and selections on top of the build-only figure to get your true total. We are happy to map that out against a specific design and block.

Quick answer: A 4x3 home (4 bedrooms, 3 bathrooms) typically runs a little larger than a 4x2, often in the 200–260 m² range, or about $460,000–$1,235,000 on the industry per-m² band ($2,300–$4,750 before siteworks and selections). The extra bathroom usually nudges a 4x3 toward double-storey, where Residential Attitudes build-only pricing starts from $766,990.

A third bathroom adds plumbing, fixtures and floor area, which is why a 4x3 sits above a comparable 4x2. It suits families who want an ensuite, a main bathroom and a guest or kids' bathroom without stretching the footprint. Siteworks and selections sit on top of the build-only figure.

Quick answer: A 5-bedroom home in Perth usually falls in the 250–350 m² range, which works out to roughly $575,000–$1,662,500 on the industry per-m² band ($2,300–$4,750 before siteworks and selections). At that size most homes are double-storey, where Residential Attitudes build-only pricing starts from $443,270.

Five-bedroom homes give large families, multi-generational households and anyone working from home the room to spread out. The wider the footprint and the more storeys involved, the higher the build figure, so size and layout are the main levers. Plan for siteworks and selections on top.

Double-storey homes in Perth typically run 220–300 m², or about $506,000–$1,425,000 on the industry per-m² band ($2,300–$4,750 before siteworks and selections). Residential Attitudes double-storey build-only pricing starts from $582,000, with complete house-and-land packages from $998,000.

A double-storey usually costs more per build than a single-storey of the same total area for a few plain reasons: stronger footings and structure to carry the upper floor, a staircase, and the extra framing and access that a second level needs. The trade-off is a smaller footprint on the block, which can be the difference on a tighter Perth lot. We will help you weigh single against double for your land and budget.

Industry estimate. ABS FY23–24 average new house: $382,044 WA, $443,828 national. Land: UDIA State of the Land 2026. Build times: Master Builders Australia, 2024–25.

Perth building costs sit comfortably within national ranges. The difference shows up in the total project cost, where long build times and rising land prices push Perth's total above several other capitals. On ABS figures for FY23–24, the average new house was $382,044 in WA against $443,828 nationally.

Want a rough number for your own home? Work through these five steps.

Indicative worked example, industry per-m² band before final design and quote.

This is a guide, not a quote. The fixed-price comparison in step 5 is the quickest way to see how an off-the-range design stacks up against a fully variable build.

Five things move your build price the most.

Any one of these can add 20–40% to the base building cost, which is why the per-square-metre range is so wide. Knowing which ones matter to you is the fastest way to control the final number.

Common questions about the cost to build a house in Perth in 2026, with clear answers.

A 4-bedroom Perth home usually sits in the 180–240 m² range, around $414,000–$1,140,000 on the industry band of $2,300–$4,750 per m² before siteworks and selections. Residential Attitudes build-only pricing starts from $356,000 for single-storey and from $582,000 for double-storey, current as at May 2026.

Industry data shows Perth building costs of $2,300–$4,750 per m² before siteworks and selections. Residential Attitudes build-only pricing starts from $356,000 for single-storey and from $582,000 for double-storey, with complete house-and-land packages from $685,000. Figures are current as at May 2026 and subject to change.

Western Australia's average detached home took about 15.5 months from approval to completion in 2024–25, the longest of any state, against a national average near 11.5 months (Master Builders, 2024–25). Building permits move faster: about 10 business days for certified applications and 25 for uncertified ones, quicker than most other states.

Land is the main driver. New block medians reached around $377,000 in 2025, up 15% on the year on UDIA data, which lifts total project costs. Long build times near 15.5 months in WA add pressure, though build times eased in 2024–25 and materials have largely stabilised since the 2022–24 spike.

Build-only covers the house from slab to completion. It excludes land, siteworks, driveways, landscaping and selections beyond the standard specification. Residential Attitudes build-only pricing starts from $356,000 for single-storey and from $582,000 for double-storey, so budget siteworks and selections on top to reach your true total.

Perth's $2,300–$4,750 per m² range sits within national averages. The gap shows in total project cost, driven by long build times (about 15.5 months versus 11.5 nationally) and rising land. On ABS FY23–24 figures, the average new house was $382,044 in WA against $443,828 nationally.

Yes. While a $400,000 budget is tight for a new build in Perth in 2026, is is possible, and Residential Attitudes build-only pricing starts from $356,000 for single-storey. It is important to remember that buyers need to budget for land, siteworks and selections on top of the build itself, so house-and-land packages start from $685,000. Talk to us for a quote on your block.

Yes. $600,000 covers many single-storey homes in Perth on a build-only basis, where Residential Attitudes pricing starts from $356,000, and approaches double-storey territory from $582,000. For a complete home including land, house-and-land packages start from $685,000. Your final figure depends on size, storeys and selections.

We are a design-led Perth builder for the mid-to-upper market, with approximately 100 floor plans built for the way real WA families live. Honest pricing is how we work: clear from-prices, a plain breakdown of what build-only does and does not cover, and no surprises buried in the fine print.

As part of JWH Group, one of Western Australia's largest home-building groups, we bring proven supply chains, Perth-tested designs and fixed-price certainty to a market where costs keep moving. Material prices have largely settled since the 2022–24 spike, but skilled-trade shortages across WA continue to push costs up, with Perth construction costs forecast to rise around 5% in 2026. A fixed-price contract provides greater cost certainty, helping you budget with confidence from contract signing through construction.

_{Disclaimer: Fixed-price contracts are subject to the terms and conditions of the building contract. Changes requested by the client, provisional sum adjustments, unforeseen site conditions, statutory requirements or other circumstances permitted under the contract may result in additional costs.}