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New custom home build cost estimator

Get a rough idea of what a new custom-built home in Perth might cost based on size and finish level. Use it to set a budget before talking to builders.

Estimated build cost
A$ 503,000 - 658,000

The range reflects typical per-square-metre rates in the Perth market before a detailed quote.

Compare actual quotes for this project

Local price context: based on 275 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 a rough estimate only; a site visit and detailed quote from a builder will confirm actual cost.

Compare actual quotes for this project

Your calculator inputs and the estimate are included with your enquiry, so builders can quote your actual project. Just add your location, timing, and how to reach you.

How many quotes would you like?

When you send this enquiry, you agree that we share it with providers who are relevant to your request.

Enquiries submitted through our forms may be shared with partner providers, and we may receive a referral fee. Our rankings and scores are based only on our published method and are never affected by referral fees.

Get quotes from top-rated custom home builders

Ranked by our published rubric from recent Google reviews, weighted by relevance to this service (the same order as the category page).

  1. New Home Building Brokers
    4.9(155) 91
    Get a quote
  2. OZ HOME BUILDING & CONSTRUCTION
    5.0(66) 89
    Get a quote
  3. HomeLux Renovations
    5.0(50) 87
    Get a quote
  4. Smith & Sons Renovations & Extensions Gold Coast Central & South
    4.8(60) 86
    Get a quote
  5. ORSM Designs - Kitchen & Bathroom Renovation | Cabinet Maker
    5.0(34) 85
    Get a quote

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Last updated 2026-08-18