How much does a granny flat cost in Geelong?
Our Geelong table prices a granny flat at two main sizes. A studio or one-bedroom unit of 35 to 45 m² costs $110,000–$160,000 turnkey, and a two-bedroom of about 60 m² costs $140,000–$210,000, typically $175,000. That 60 m² mark matters here, because it is the ceiling for a Victorian small second dwelling, which skips the planning permit on most residential lots. Going modular brings the entry price down: a one-bedroom unit built off site and trucked in is $80,000–$120,000. If you are weighing one up as a rental, note that 27.5% of Geelong households rented their home at the ABS 2021 Census, and the flat can be let to anyone.
Comparing cities, or after the Australia-wide picture? See the national guide: How much does a granny flat cost in Australia?
Detailed Pricing — Granny Flat Cost in Geelong 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Prefab / modular granny flat — 1-bed (delivered) | $80,000total | $95,000 | $120,000 |
| Studio / 1-bed granny flat (35-45m², turnkey) | $110,000total | $130,000 | $160,000 |
| 2-bed granny flat (~60m², turnkey) | $140,000total | $175,000 | $210,000 |
| Custom / premium 2-bed (high-end finishes) | $210,000total | $260,000 | $320,000 |
| Two-storey granny flat (complete, incl. site costs + approvals) | $280,000total | $345,000 | $425,000 |
| Granny flat with attached single garage (complete, incl. site costs + approvals) | $170,000total | $210,000 | $260,000 |
| Garage / outbuilding conversion | $40,000total | $75,000 | $120,000 |
| Turnkey build (per m² built) | $2,300/sqm | $2,800 | $3,500 |
| Site works + service connections | $15,000total | $25,000 | $40,000 |
| Building permit (small second dwelling) | $3,000total | $6,000 | $11,000 |
| 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) | $80/m | $130 | $190 |
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Get Geelong quotes →Prices include GST. Based on Geelong metro area, October 2026. Outer suburbs may vary.
Geelong’s Granny Flat Market in 2026
In Geelong a small second dwelling can be built on most residential and rural properties without a planning permit, but a building permit is always needed. It can’t be connected to mains gas and needs no car parking space, and this route allows only two dwellings on the lot.
As an investment: anyone can live in or rent a small second home, including unrelated tenants, under normal tenancy standards, and it needs at least 8 m² of private open space, at least 1.6 m wide.
The table’s building-permit row is $3,000–$11,000 and site works and connections $15,000–$40,000; with no gas, the connections are water, sewer and power.
How Granny Flat Costs Vary Across Geelong
Central & Newtown
Typical cost: $160k–$300k turnkey
Newtown, Geelong West, East Geelong, Manifold Heights. Established blocks and renovated homes; heritage areas can limit siting. Quality detached builds.
Bellarine Peninsula
Typical cost: $160k–$300k turnkey
Ocean Grove, Barwon Heads, Drysdale, Leopold. Coastal and holiday-home blocks with strong rental demand. Detached builds with coastal detailing.
Highton & South
Typical cost: $150k–$280k turnkey
Highton, Belmont, Grovedale, Wandana Heights. Family suburbs on the hills and flats with good access. Standard detached 2-bed builds.
Northern Suburbs
Typical cost: $120k–$230k turnkey
Corio, Norlane, Lara, North Shore. The most affordable area — flatter blocks and easy access. Best value and strong yields.
Armstrong Creek & Growth
Typical cost: $120k–$230k turnkey
Armstrong Creek, Charlemont, Mount Duneed, Torquay. Fast-growing estates on flat land suit prefab and standard builds.
What You’ll Actually Pay — Common Geelong Granny Flat Builds
Geelong granny flats priced from the table.
1-bedroom granny flat — 40m², turnkey
$110,000–$160,000 total
At the typical turnkey price of $130,000, plus the building permit at $6,000, a studio comes to $136,000.
2-bedroom granny flat — 60m², turnkey
$140,000–$210,000 total
A 60 m² two-bedroom at the typical $175,000; with typical site works and connections, $200,000.
Prefab / modular 2-bed — installed
$80,000–$120,000 delivered (1-bed row)
Prefab: the table has a delivered one-bedroom row only, $80,000–$120,000.
Garage / outbuilding conversion to studio
$40,000–$120,000 total
Conversions run $40,000–$120,000; a converted garage still can’t have a mains gas connection on this pathway.
Custom architect 2-bed / two-storey
$210,000–$425,000 total
Custom finishes $210,000–$320,000, two storeys or with a garage $280,000–$425,000. Over 60 m², or a third dwelling, needs planning approval.
A Geelong granny flat as a rental
Renters in Geelong, and what a rental granny flat costs to build
In the 2021 Census, 27.5% of households in the Geelong area were renting, below the 30.6% across Australia. Our Geelong table prices a studio or one-bedroom granny flat (35 to 45 square metres, turnkey) at $110,000–$160,000 and a two-bedroom one of about 60 square metres at $140,000–$210,000.
These answers use the prices in the table on this page.
Local figures: Australian Bureau of Statistics, 2021 Census QuickStats, Geelong.
What Affects Granny Flat Costs in Geelong
The 60 m² ceiling
Victoria lets a small second dwelling of 60 m² or less go ahead without a planning permit in most residential and rural zones, provided no flooding, environmental or other special controls apply. The City of Greater Geelong repeats that rule and adds that a building permit is always required, which our table prices at $3,000–$11,000. Design past 60 m² and the project goes back through planning.
Lot size, gas and parking
On a General Residential lot of less than 300 m², a planning permit is needed even for a flat under the size cap. The lot can hold only the existing house and this one small second dwelling, and the flat must not be connected to reticulated natural gas. On the plus side, the City says it needs no car parking space, so you are not paying for a second carport.
Heating with no gas line
Geelong sits in NCC climate zone 6, and July nights at the Breakwater weather station average 6.4 °C (BOM averages). With piped gas ruled out, heating, cooking and hot water all run on electricity, so ask each builder exactly which reverse-cycle unit and which electric or heat-pump water heater the price includes, and what insulation goes into the walls, ceiling and floor.
Renting it out
Anyone can live in or rent the flat, from a parent to an unrelated tenant, and the tenancy standards for room sizes, facilities and smoke alarms apply just as they do to a house. It cannot be subdivided or sold apart from the main home, so its value stays tied to your title. The median weekly rent across Geelong was $350 at the ABS 2021 Census; check what small units rent for in your suburb now.
Prefab, standard plan or custom
A delivered modular one-bedroom is the cheapest way in, typically $95,000 against $130,000 for a site-built studio, though slab, cranage and connections are often extra on the modular price. A custom two-bedroom with high-end finishes runs $210,000–$320,000. Measured by floor area, a turnkey build lands at $2,300–$3,500 per m².
Site, services and surrounds
Site works and service connections add $15,000–$40,000, more if the block falls away or the sewer sits far from the flat. Clearing an old shed or trees is $3,000–$15,000, a path and basic landscaping $5,000–$20,000, and privacy fencing between the two homes $80–$190 a metre.
Converting what is already there
A sound garage or outbuilding can become the flat for $40,000–$120,000, typically well below a new studio. To count as a small second dwelling it has to be self-contained, with a kitchen sink, food preparation area, bath or shower, toilet and wash basin, so most of the conversion budget goes on plumbing and waterproofing those rooms.
How to Save Money on Granny Flat Cost in Geelong
Frequently Asked Questions — Granny Flat Cost in Geelong
Our Methodology
We build these estimates by pulling pricing from public cost guides, major trade marketplaces, industry body rate data, and builders’ own websites, then cross-checking the ranges and adjusting for local cost-of-living and advertised labour rates. The figures are editorially independent and no business pays to change them. Treat every number as a guide rather than a quote — the only way to know your real price is to get a few written quotes. Last reviewed October 2026. Read our full methodology →