Perth metro
Home extensions in Perth
We build home extensions across Perth metro from our base in Kardinya. We arrange the structural engineer and the building permit, build the extension and any structural changes to the existing house, then complete the fit-out under one building contract.
$3,500–$4,500 per m² incl. GST, from about $120,000 incl. GST. 12–20 weeks to build.
Indicative pricing only. Final pricing is confirmed once the full scope is set and, where needed, after engineering detail. Larger or structural projects may need a more detailed paid consultation after the free initial walk-through.
Book a free site consult
Questions
Do I need a building permit for an extension in WA?
Yes. A building permit is generally required. We arrange the structural engineer and the building permit.
How much does an extension cost?
Extensions are $3,500–$4,500 per m² incl. GST, from about $120,000 incl. GST. Indicative pricing only. Final pricing is confirmed once the full scope is set and, where needed, after engineering detail. Larger or structural projects may need a more detailed paid consultation after the free initial walk-through.
How long does an extension take to build?
12–20 weeks to build.
Book a free site consult
Tell us the suburb, the property type and the work you're planning. We'll get back to you within 24 hours to arrange a free walk-through of the site. The free walk-through is to look at the site and talk through the scope. Pricing follows once the scope is set.
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