Home extension cost estimator
Work out an approximate budget for extending your home in Perth based on the added floor area and the type of extension.
Use this range for early budgeting; final cost depends on foundations, roofline matching and council requirements.
Compare actual quotes for this projectLocal price context: based on 68 price points from reviews and provider websites across this directory. Recorded prices span jobs of very different sizes, so compare quotes for your exact project.
This is an estimate only; a detailed quote requires a site visit and design.
Enquiries sent through our contact forms may be passed to partner providers, and we may receive a referral fee. Our rankings and scores are based solely on our published scoring method and are not influenced by referral fees.
Get quotes from top-rated renovation contractors
Ranked by our published rubric from recent Google reviews, weighted by relevance to this service (the same order as the category page).
Modus PropertyGet a quote4.9(195) 91
New Vision RenovationsGet a quote5.0(44) 88
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