Last updated October 2026
Granny flats vs tiny homes is a common comparison for Victorian homeowners who want a second, smaller home in the backyard. Both are compact and self-contained, but they are treated very differently. A granny flat is a permanent building with its own approvals and connected services. A tiny home is often built on a trailer and may be treated more like a caravan. This guide compares the two on approvals, comfort, services, size and long-term use so you can choose what suits your block.
Key takeaways
- A granny flat in Victoria is a permanent small second dwelling of up to 80m², built on the same lot as an existing home. From 15 October 2026, the maximum size of a small second dwelling increased from 60m² to 80m² under Amendment VC306. Read our guide to the 80m2 granny flat rules in Victoria (link to https://innovistagroup.com.au/80m2-granny-flat-victoria/).
- Tiny homes on wheels are often treated like caravans, and the rules for living in one vary by council.
- Granny flats connect to standard water, sewer and electricity. Many tiny homes use tanks, compost toilets or solar.
- A granny flat offers more space and a full-sized kitchen, bathroom and laundry.
- A turnkey G-Flat™ costs $195,000 to $265,000, depending on the finish level.
What is a granny flat?
In Victoria, a granny flat is known as a small second dwelling. It is a self-contained home of 80m² or less, with its own kitchen, bathroom and toilet, on the same lot as an existing house. It is built on permanent foundations, connected to services and approved with a building permit. In most residential zones it does not need a planning permit, although lots under 300m² and some overlays may need one.
A small second dwelling can be lived in by family or rented out, but it cannot be subdivided or sold separately. The Victorian Government small second dwellings page explains the rules.
What is a tiny home?
A tiny home is a very small dwelling, often built on a trailer so it can be moved. Tiny homes appeal to people who want a minimal lifestyle or an off-grid setup.
Because many tiny homes are on wheels, they are often treated like caravans rather than permanent buildings. Whether you can live in one long term on a suburban block depends on your council’s local laws and planning rules, so it is important to check with your council before you buy.
Granny flats vs tiny homes at a glance
| Factor | Granny flat | Tiny home on wheels |
|---|---|---|
| Structure | Permanent building | Often on a trailer |
| Size | Up to 60m² as a small second dwelling | Usually much smaller, limited by transport rules |
| Approvals | Building permit, usually no planning permit | Depends on council rules |
| Services | Connected to water, sewer and electricity | Often tanks, compost toilets or solar |
| Bedrooms | Typically one or two separate bedrooms | Often a loft bed |
| Long-term living | Designed as a permanent home | Rules for permanent living vary by council |
Approvals and compliance
When you compare granny flats vs tiny homes, approvals are often the deciding factor. A granny flat follows a clear pathway in Victoria: it is built to the National Construction Code, approved with a building permit and inspected during construction.
For a tiny home on wheels, the rules depend on how your council treats it and how long it will be lived in. Some councils allow a caravan or movable dwelling to be occupied for limited periods, while longer stays may need a permit or may not be allowed. Always confirm with your council before committing. Our granny flat compliance guide for Victoria explains the granny flat side in detail.
Comfort and liveability
A granny flat is built like a full-sized home. A 60m² layout fits two separate bedrooms, a full kitchen with standard appliances, a bathroom, a laundry and open-plan living, with heating and cooling included.
Tiny homes make clever use of a small space, but that usually means trade-offs such as loft beds reached by a ladder, compact bathrooms and limited storage. That can suit a single person, but it can be harder for elderly parents or families.
Services and utilities
In any granny flats vs tiny homes comparison, services are a key difference. A granny flat connects to the main house’s water, sewer and electricity, just like a standard home. Every G-Flat™ includes connection of services up to 10m from the main house. See services connection costs beyond 10 metres for longer runs.
Many tiny homes work off-grid, with water tanks, composting toilets or solar. These suit rural land but may be less practical on a suburban block.
Size and layout
Size is also one of the clearest gaps in the granny flats vs tiny homes debate. Tiny homes on wheels are limited by road transport rules, so they are usually much smaller than a granny flat. A small second dwelling can be up to 80m², which leaves room for:
- two separate bedrooms
- an open-plan kitchen, dining and living area
- a full bathroom and laundry
- built-in storage throughout
The standard G-Flat™ is a 60m², two bedroom home, available in five floor plans: Stella, Aurora, Lana, Lana 2 and Sirius. See 60m² granny flat designs for how each layout works.
Who each option suits
When weighing up granny flats vs tiny homes, think about who will live there and for how long.
A granny flat usually suits:
- ageing parents who need a comfortable, accessible home
- adult children who want independence while they save
- tenants looking for a long-term home
- owners who want a permanent addition to their property
A tiny home may suit:
- a single person or couple who wants a minimal lifestyle
- short-term or flexible accommodation
- rural or off-grid land where council rules allow it
Long-term use
A granny flat is a permanent part of your property and is designed to be lived in for decades. It can be used by family now and rented later, and residential tenancy laws apply if you rent it out. Read how to legally rent out a granny flat in Victoria for the requirements.
A tiny home on wheels can be moved or sold on its own, which offers flexibility. But because it is not a permanent building, it is treated differently from a granny flat by councils, lenders and insurers, so it is worth checking how each of them views it before you buy.
What a G-Flat™ costs
The standard G-Flat™ is a 60m², two bedroom turnkey build with a fixed price for each finish level.
| Finish level | Turnkey price |
|---|---|
| Affordable Lite | $195,000 |
| Affordable | $208,000 |
| Homestead | $218,000 |
| Signature | $238,000 |
| Luxe | $265,000 |
Each price includes the building permit, all plans, connection of services up to 10m and a 10-year structural warranty.
Prices are a guide for a standard 60m², two bedroom G-Flat™ and depend on your site. Sites 70km or more from the Melbourne CBD attract a 12.5% regional surcharge, sites with no driveway or tight backyard access attract a $7,000 surcharge, and sloping or elevated sites can affect the final price. A free site assessment confirms the price for your block.
See granny flat pricing in Victoria for the full breakdown.
Frequently asked questions
Granny flats vs tiny homes: what is the main difference?
A granny flat is a permanent, approved building connected to services. A tiny home is often on wheels and may be treated like a caravan.
Do I need a permit for a granny flat in Victoria?
Every granny flat needs a building permit. Most of 80m² or less do not need a planning permit, but lots under 300m² and some overlays may.
Can I live in a tiny home in my backyard?
It depends on your council’s rules. Check with your council before you buy.
Find the right option for your block
If a permanent second home is what you need, the next step is to see what your block allows. Book your free site assessment or visit our display G-Flat™.