How much does a builder cost in Hobart?
When a Hobart owner calls a builder to add space, the extension is priced by floor area: $2,500–$5,000 per square metre for a ground-level addition finished to standard, or $250,000–$600,000 to build a new level upstairs. A builder-managed kitchen runs $20,000–$70,000 and a bathroom $15,000–$45,000, while knocking down and rebuilding a three- or four-bedroom single-storey home is $450,000–$1,000,000. Greater Hobart is mostly modest freestanding houses, and its cool climate, heritage precincts and Tasmania's own building contract law all feed into what a local builder quotes. All prices include GST.
Comparing cities, or after the Australia-wide picture? See the national guide: Builder cost in Australia.
Detailed Pricing — Building Cost in Hobart 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 Hobart quotes →Renovate, Extend or Rebuild in Hobart?
The Hobart table: renovate $150,000–$600,000, extend $2,500–$5,000 a square metre, rebuild $450,000–$1,000,000. Tasmanian builders give statutory warranties that form part of every residential building contract.
Common Building Projects and What They Cost
Home extensions
30–50 m² extension: $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: $450,000–$1,000,000; demolishing a house is notifiable work.
Home Extensions and Second-Storey Additions in Hobart
Only the lowest-risk work can be owner-done; Category 2 needs a licensed builder, and owner-builders get at most two projects in 10 years. Second storey: $250,000–$600,000.
Knock-Down Rebuild vs Renovation in Hobart
Demolishing a house is notifiable work by a licensed builder, asbestos removed by WorkSafe-licensed people. In a Heritage Precinct or on a listed property, Hobart usually requires planning approval. Rebuild $450,000–$1,000,000, renovate $150,000–$600,000.
What's Included in a Builder's Quote
Deposits are capped at 10% for $20,000–$50,000 and 5% from $50,000, and a builder can’t ask for more than half the price before half the work is done. Five business days to withdraw.
What Affects Builder Costs in Hobart
Three-bedroom houses, room to grow
Three bedrooms is the usual Hobart home: 47.9% of dwellings, against 39% nationally, while only 24% have four or more, against 34.8% (ABS 2021 Census). Smaller homes leave room to grow, and home extensions are a common local search. Square metre for square metre, an extension at $3,500 typical costs more than a standard new build at $2,300, because new work must tie into an old roof, floor and wiring.
Heritage precincts and approvals
Owners of heritage-listed places, and of homes within a Heritage Precinct of the planning scheme that covers Hobart, will usually need the council's planning approval for any development, according to the City of Hobart. Its building pages point owners to a private building surveyor for advice on which approvals a job requires. Heritage conditions can dictate materials, windows and rooflines, which lengthens design time before a builder can price firmly.
A cool, evenly wet climate
The ABCB calls Hobart's NCC zone, number 7, cool temperate, and the Ellerslie Road station logs an average July minimum of 4.6 °C. Rain is spread across the whole year, from 38.8 mm in February, the driest month, to 62.0 mm in October, the wettest (BOM averages). With no long dry season to build into, builders cover open frames year-round and allow weather days, and insulation and window choices carry real weight in the heating bill.
Contract rules from $20,000
Tasmania's Residential Building Work Contracts and Dispute Resolution Act protects owners on residential work of $20,000 or more. The contract must be written, dated and signed by both sides, and you have five business days to withdraw after receiving it with the consumer guide. Deposits are capped at 10 per cent between $20,000 and $50,000, and 5 per cent from $50,000, and the builder cannot ask for more than half the price before half the work is done.
Asbestos and demolition in older homes
Demolishing a house in Tasmania is Notifiable Work: it is done by a licensed builder, and a building surveyor's Certificate of Likely Compliance must reach the council before work starts. Any asbestos has to be removed by people licensed by WorkSafe Tasmania; a licence is required for more than 10 square metres of non-friable material and for any friable material. Opening up an old wall for a steel beam runs $3,000–$15,000.
Licence, insurance and warranties
Before signing a residential building contract, check that the builder is licensed as a builder in Tasmania. A licensed general builder must carry contract works and public liability insurance, and statutory warranties form part of every residential building contract automatically. Some trades need no builder's licence at all, including paving, concreting, painting and landscaping, so a small outdoor job may not need a builder.
Slope, access and finishes
On a steep or rocky block, excavation, retaining and footings can take a large share of the budget before any walls go up, and narrow street access slows deliveries. Finish level is the other big lever: project-home fittings and architect-grade joinery, stone and glazing can produce very different totals for the same floor area, so compare quotes on their prime-cost allowances.
How to Save Money on Building Cost in Hobart
Frequently Asked Questions — Building Cost in Hobart
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 →