What are typical builders prices in Australia?

Small structural works: $4,000 to $12,000. Removing a load-bearing wall with an engineered beam, plastering and making good. Major renovation: $30,000 to $80,000. Opening up and renovating a kitchen-living zone with structural changes, new wet area and full finishing. Extension or second storey: $120,000 to $350,000. A ground-floor extension or second-storey addition including design coordination, approvals and full fit-out.

Homeowners Tradies

How much does a builder cost?

Q: What affects the cost of builders in Australia?

Scope & structural complexity: Load-bearing changes, footings and roof work multiply trades, engineering and time. Materials & finish level: Standard versus architectural finishes can swing an identical floor plan by tens of thousands. Site access & condition: Tight access, sloping blocks and older homes with hidden defects all add labour. Approvals & engineering: Council or certifier approvals, engineering and surveys add cost and lead time before work starts. Provisional sums & exclusions: Quotes with vague allowances for tiles, fittings or excavation often blow out later.

Small structural jobs with a builder start around $4,000–$12,000, major renovations commonly run $30,000–$80,000, and extensions $120,000 or more.

Typical price band

$50,000typical

standard job $30k–$80k

$4,000 low$350,000 high

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Real-world examples

Small structural works$4,000 – $12,000

Major renovation$30,000 – $80,000

Extension or second storey$120,000 – $350,000

What affects the price

— Scope & structural complexity. Load-bearing changes, footings and roof work multiply trades, engineering and time.

— Materials & finish level. Standard versus architectural finishes can swing an identical floor plan by tens of thousands.

— Site access & condition. Tight access, sloping blocks and older homes with hidden defects all add labour.

— Approvals & engineering. Council or certifier approvals, engineering and surveys add cost and lead time before work starts.

— Provisional sums & exclusions. Quotes with vague allowances for tiles, fittings or excavation often blow out later.

Tips before you post

— Check the builder holds a current licence or registration for your state and ask about home warranty insurance — it's mandatory above a threshold in most states.

— A fixed-price contract with a detailed scope beats a cheap, vague quote nearly every time.

— Compare quotes line by line — the cheapest often just excludes more.

Beyond the price: Hiring a builder: what to sort out before anyone swings a hammer

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