How much does a granny flat cost in Townsville?
Granny flat prices in Townsville run $112,000–$163,000 for a turnkey 1-bedroom build (35–45m²) and $143,000–$214,000 for a 2-bedroom (~60m²), with prefab/kit units from about $82,000 supplied. That’s roughly $2,350–$3,550/sqm for a turnkey build, depending on design, site and finishes.
Detailed Pricing — Townsville 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Prefab / kit granny flat — 1-bed (supplied) | $82,000total | $97,000 | $122,000 |
| Studio / 1-bed granny flat (35-45m², turnkey) | $112,000total | $133,000 | $163,000 |
| 2-bed granny flat (~60m², turnkey) | $143,000total | $179,000 | $214,000 |
| Custom / premium 2-bed (high-end finishes) | $214,000total | $265,000 | $326,000 |
| Two-storey or with attached garage | $286,000total | $352,000 | $434,000 |
| Garage / outbuilding conversion | $41,000total | $77,000 | $122,000 |
| Turnkey build (per m² built) | $2,350/sqm | $2,850 | $3,550 |
| Site works + service connections | $15,000total | $26,000 | $41,000 |
| Council approval / building application | $3,000total | $6,000 | $12,000 |
| Demolition / site clearing (if needed) | $3,000total | $6,000 | $15,000 |
| Driveway, path & basic landscaping | $5,000total | $10,000 | $20,000 |
| Privacy fencing (per m) | $150/m | $220 | $310 |
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Get Townsville quotes →Prices include GST. Based on Townsville metro area, Mar 2026. Outer suburbs may vary.
Townsville’s Granny Flat Market in 2026
Townsville has one of Australia’s busiest granny flat markets. High property prices, multi-generational living, and strong rental demand make a secondary dwelling one of the higher-return additions a Townsville homeowner can make — a 2-bedroom granny flat rents well and can lift property value by 10–30%. Townsville builds must be engineered for the cyclonic region, which adds cost, but Queensland’s relaxed secondary-dwelling rules and steady rents keep them worthwhile.
The biggest swing in price is build method. Prefab and modular units (from about $82,000 supplied) are the budget end; standard site-built 1- and 2-bedroom homes ($112,000–$214,000 turnkey) are the mainstream; and custom or two-storey builds run $214,000–$434,000+. Site works and service connections ($15,000–$41,000) and approvals are the costs homeowners most often underestimate.
On the rules: In Queensland a secondary dwelling (granny flat) can be rented to anyone since 2022, with a 60m² baseline in most council schemes, though approval paths and size rules vary by council. Cyclonic engineering, build method and finishes drive the price, plus services and approval.
We’ve compiled pricing from Townsville granny flat builders, prefab suppliers, and trade databases to give the most accurate picture of granny flat costs in Townsville for 2026.
How Granny Flat Costs Vary Across Townsville
Inner & Castle Hill
Typical cost: $184k–$337k turnkey
North Ward, Castle Hill, Belgian Gardens, South Townsville. Hillside and coastal blocks with full cyclone exposure. Heavily engineered, quality builds.
Northern Beaches
Typical cost: $163k–$306k turnkey
Pallarenda, Bushland Beach, Saunders Beach. Coastal blocks with cyclone and salt exposure. Cyclonic engineering and corrosion-resistant detailing are standard.
Suburban Townsville
Typical cost: $153k–$286k turnkey
Kirwan, Thuringowa, Aitkenvale, Annandale. Established family suburbs on flat blocks. Standard detached builds, all cyclone-rated.
University & South
Typical cost: $153k–$286k turnkey
Douglas, Wulguru, Oonoonba, Idalia. Family homes near the university and hospital — strong rental demand. Cyclone-engineered builds.
Growth & Rural
Typical cost: $122k–$235k turnkey
Mount Louisa, Bohle Plains, Deeragun, Rasmussen. Newer estates on flat blocks with easy access. Best value; all builds cyclone-rated.
What You’ll Actually Pay — Common Townsville Granny Flat Builds
Here’s what typical granny flat projects cost all-in across Townsville in 2026, including build, standard site works, services, and approvals where noted.
1-bedroom granny flat — 40m², turnkey
$112,000–$153,000 total
The go-to Townsville build for one tenant or a family member. A detached one-bedroom home — bedroom, bathroom, kitchenette and living — with standard finishes, slab and connections. Allow roughly 12–14 weeks once approval is through.
2-bedroom granny flat — 60m², turnkey
$153,000–$214,000 total
The maximum size under most rules and the best rental return. Two bedrooms, full bathroom and a proper kitchen with room for real furniture. Standard-to-mid finishes, slab, services and approval included — allow 14–16 weeks once approved. The workhorse Townsville investment build.
Prefab / modular 2-bed — installed
$97,000–$163,000 total
Built off-site and lifted in, then hooked up to services on a prepared slab. Quicker and cheaper than a site build with far less mess — just remember slab, site works and connections are usually extra on top of the unit price.
Garage / outbuilding conversion to studio
$46,000–$97,000 total
Turning a garage or outbuilding into a studio is the lowest-cost path to a secondary dwelling — though adding plumbing, a bathroom and kitchenette, insulation and compliance upgrades is where the money goes. Best value when the slab and walls are already sound.
Custom architect 2-bed / two-storey
$265,000–$434,000 total
A top-end, architect-designed build — premium finishes, a bigger footprint or a two-storey layout on a tight block. Design and engineering are required; you’ll see these most across the northern beaches suburbs where land values justify the outlay.
What Affects Granny Flat Costs in Townsville
Build method
The cheapest path is a prefab/kit unit (from ~$82,000 supplied); a standard site build is the middle ground, and custom or two-storey designs sit at the top.
Size & bedrooms
A 1-bed (35–45m²) runs $112,000–$163,000 turnkey; a 2-bed (~60m²) $143,000–$214,000. 60m² is the cap in most states.
Site works & access
A flat, clear, easy-access block is cheapest; slope, rock, tight access and craneage can add $15,000–$41,000 in site works.
Service connections
Water, sewer, power and stormwater connections add cost — keeping wet areas near the main house’s services keeps plumbing runs short.
Approvals
In Queensland a secondary dwelling (granny flat) can be rented to anyone since 2022, with a 60m² baseline in most council schemes, though approval paths and size rules vary by council.
Finishes & inclusions
Standard finishes keep costs down; stone benchtops, premium flooring, decks and air-conditioning push a build toward the top of the range.
How to Save Money on a Granny Flat in Townsville
Frequently Asked Questions
Our Methodology
The prices on this page are compiled from publicly available cost guides, leading tradie marketplaces, peak industry body data, and individual builder websites across Australia. We cross-reference ranges from several sources and adjust for city-specific cost differences using advertised rates, wage data, and cost-of-living indicators. Our guides are produced independently — no tradesperson can influence a published figure. All prices are estimates and vary with your specific job, so always get multiple quotes. Last reviewed June 2026. Read our full methodology →