How much does a builder cost in Townsville?
Adding a room to a Townsville house runs $2,500–$5,000 per square metre of single-storey extension, commonly around $3,500, while a new home at standard finish costs $1,600–$4,500 a square metre. Smaller builder-managed jobs are priced as a whole: a bathroom is $15,000–$45,000, a kitchen costs $20,000–$70,000, and a roofed outdoor living area $12,000–$35,000. Four in five Townsville dwellings are separate houses (80.1%, ABS 2021 Census), and the whole city sits in Queensland's cyclonic Wind Region C, so the engineering behind every roof, post and footing is part of the quote.
Comparing cities, or after the Australia-wide picture? See the national guide: Builder cost in Australia.
Detailed Pricing — Building Cost in Townsville 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Minor structural repair (lintel, crack stitching, wall ties) | $500per job | $1,800 | $5,000 |
| Load-bearing wall removal + steel beam | $3,000per job | $8,000 | $15,000 |
| Pre-purchase building inspection / defect report | $400per job | $600 | $1,200 |
| Deck or pergola (builder-managed) | $5,000per project | $12,000 | $40,000 |
| Roofed patio / alfresco (builder-managed) | $12,000per project | $20,000 | $35,000 |
| Garage or carport (single to double) | $10,000per project | $25,000 | $55,000 |
| Bathroom renovation (builder-managed) | $15,000per project | $25,000 | $45,000 |
| Kitchen renovation (builder-managed) | $20,000per project | $35,000 | $70,000 |
| Single-storey extension (per sqm) | $2,500per sqm | $3,500 | $5,000 |
| New home build (per sqm, standard finish) | $1,600per sqm | $2,300 | $4,500 |
| Granny flat (1-2 bed, turnkey) | $120,000per build | $165,000 | $250,000 |
| Full home renovation (whole house) | $150,000per project | $300,000 | $600,000 |
| Second-storey addition | $250,000per project | $380,000 | $600,000 |
| Knock-down rebuild (3-4 bed, single storey) | $450,000per build | $650,000 | $1,000,000 |
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Get Townsville quotes →Renovate, Extend or Rebuild in Townsville?
Townsville prices from the table: renovate $150,000–$600,000, extend $2,500–$5,000 a square metre, rebuild $450,000–$1,000,000. Home warranty cover is run by the state through the QBCC.
Common Building Projects and What They Cost
Home extensions
An extension of 30–50 m²: $75,000–$250,000.
Second-storey additions
Second storey: $250,000–$600,000.
Granny flats
Turnkey granny flat: $120,000–$250,000.
Knock-down rebuilds
Rebuild of a 3–4 bedroom home: $450,000–$1,000,000.
Home Extensions and Second-Storey Additions in Townsville
Extensions are $2,500–$5,000 a square metre in Townsville. An owner-builder can’t get a new permit within six years of the last one, and can’t remove more than 10 m² of asbestos without a licence.
Knock-Down Rebuild vs Renovation in Townsville
Townsville needs a building permit from a private certifier to demolish or remove a house. In the Character residential zone, an unsound house can come down but its replacement must meet the zone code. Demolition under an approval must substantially start within two months.
What's Included in a Builder's Quote
A contract of $20,000 or more is Level 2: you receive the QBCC consumer guide before signing. Second-storey work in our table is $250,000–$600,000.
What Affects Builder Costs in Townsville
Designed for cyclone winds
Queensland's cyclone preparedness guide puts Townsville in Wind Region C, where buildings should be designed to resist a Category 4 cyclone with gusts of about 250 km/h. In practice that means a roof tied down through the walls to the footings by a chain of connections, and verandah and patio posts on footings sized to resist uplift from the roof they hold. Expect that hardware and engineering on any extension or carport quote.
Patios, decks and sheds need approval
Queensland lets some small class 10 structures go up without building approval, but the exemption does not apply anywhere in Wind Region C, and it never covers a deck that is roofed or more than 1 m above the ground. So in Townsville, allow for a certifier on a deck or pergola ($5,000–$40,000) or a garage ($10,000–$55,000), and a garden shed must be designed for the same wind classification as the house.
Building around the wet
Townsville Aero averages 312.4 mm of rain in February and 274.4 mm in January, but only 9.9 mm in September (BOM averages), and cyclones can arrive any time from November to April. Footings, slabs and the weeks when a roof is open are easiest in the dry middle of the year. Ask each builder how wet-weather days are handled in the contract and who carries the delay.
Licence, contract and deposit
Any building work in Queensland valued over $3,300 needs a QBCC-licensed contractor and a contract in writing that both of you date and sign before anything starts. A builder may ask for no more than 10% up front on work up to $19,999, and no more than 5% above $20,000: for a kitchen priced at the typical $35,000, the ceiling is $1,750. The signed contract also carries a five-business-day cooling-off right.
Home warranty cover
Residential work worth more than $3,300 must carry a premium under the Queensland Home Warranty Scheme, and it belongs in the quote. The QBCC administers it; the policy's term is six and a half years, it passes to a buyer when the property sells, and it caps claims at $200,000. Owner-builders are shut out of the scheme, and they need their own permit for any project above $11,000.
Asbestos in older houses
Queensland draws its line for bonded asbestos at 10 m²: above that, only a business with an asbestos removal licence of class A or B may take it out, and spreading the removal over several days in small batches does not avoid that. Friable material is A class work. Before a load-bearing wall comes out ($3,000–$15,000), get suspect sheeting tested and check how each quote treats testing and disposal.
Grants for cyclone upgrades
Townsville falls inside the coastal area covered by Queensland's Household Resilience Program. Owner-occupiers of a house built before 1984 can apply for a grant of 80% of the cost of eligible upgrades, up to $15,000, and eligible work includes a full roof replacement and roof tie-down upgrades. If a renovation already includes re-roofing, check whether that part of the job qualifies before the builder starts.
How to Save Money on Building Cost in Townsville
Frequently Asked Questions — Building Cost in Townsville
Our Methodology
Prices on this page are compiled from publicly available cost guides, leading tradie marketplaces, peak industry body data, and individual tradesperson websites across Australia. We cross-reference ranges from multiple sources and adjust for city-specific cost differences. Our price guides are produced independently and no tradesperson can influence a published figure. All prices are estimates and will vary based on your specific job. Always get multiple quotes. Last reviewed June 2026. Read our full methodology →