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Tiny home rules in Tasmania

From Modular Living Australia — the independent knowledge base Last updated: 8 Oct 2026

In Tasmania a tiny house used as a permanent residence is assessed under the Tasmanian Planning Scheme like any other house, whatever its size; as a secondary residence it can be up to 60 m², and in the main residential zones it needs no planning permit where the rules are met.^[1] A proposed 90 m² cap was not yet in effect.^[2] A tiny house on wheels that is eligible for registration as a vehicle is not classified as a building.^[3]

Tasmania has done something few states have: published a plain-language fact sheet on tiny houses under its state-wide planning scheme, and a separate regulatory note on the building and plumbing side.^[1][4] The two documents together give a clearer picture than most jurisdictions manage — and they make one thing explicit that other states leave implicit.

That thing is this: size is not the question. Regardless of how small it is, a tiny house used as a permanent residence is a residential use, and is assessed under the Tasmanian Planning Scheme exactly like any other house.^[1]

What counts as a tiny house §

The State Planning Office defines a tiny house loosely — a smaller house than traditional ones, chosen for cost or lifestyle — and notes it can be either fixed to the ground like a conventional house, or a mobile structure such as a caravan, camping trailer or other structure on wheels designed as a house.^[1]

The line between the two is drawn by what the structure is connected to. A tiny house fixed to the ground — for example by a water or wastewater connection — or connected to another structure such as a deck or awning would normally be considered a permanent structure.^[1]

The planning side: often No Permit Required §

Tasmania's planning scheme has a category that does not exist in most states: No Permit Required. It means exactly what it says — you do not obtain a planning permit from the council, though you must still meet the relevant planning requirements.^[1]

A tiny house can be approved for residential use in one of four ways: as the only dwelling on a site; as a secondary residence associated with a single dwelling; as one of several dwellings on a site; or as part of another housing form such as a boarding house.^[1]

The key rules that must be met for the No Permit Required pathway in the main urban residential zones are building height and setbacks, site coverage, private open space, privacy, and density requirements where multiple dwellings are involved.^[1] Codes sitting over the zones may add rules on parking and access, heritage and natural values, and hazards such as bushfire, flooding and landslip.^[1]

The 60 m² secondary residence §

Tasmania's equivalent of a granny flat is a secondary residence: a small self-contained residence up to a floor area of 60 m², in addition to a single dwelling on the same site. It must share the access, parking, water, sewerage, gas, electricity and telecommunications connections and meters with the main dwelling.^[1]

That sharing requirement is doing real work. A self-contained residence that does not meet the secondary residence requirements — for example one with its own separate meters — is generally considered a multiple dwelling instead, which changes the assessment category in every zone and is prohibited outright in Rural Living.^[1]

A pending change to the 60 m² cap

Since the fact sheet above was published, the Tasmanian Government has begun a formal process to raise this cap. A draft State Planning Provisions amendment, with Terms of Reference issued in March 2026, proposes increasing the allowable gross floor area for a secondary residence from 60 m² to 90 m², and to further clarify what qualifies as a secondary residence.^[2] The amendment had not taken effect as of this guide's publication — it must complete assessment under the Land Use Planning and Approvals Act 1993 first.^[2] Check the Tasmanian Planning Commission's current assessment status before relying on either figure. See also granny flat rules in Tasmania, the ACT and the Northern Territory.

The building side: wheels change the classification §

Under the Building Act 2016, all building work in Tasmania — including an ancillary dwelling such as a granny flat — must comply with the Act and the National Construction Code. It must be designed by a licensed designer, approved by a licensed building surveyor, and constructed by a licensed builder, or by an owner holding an owner builder licence through CBOS. Plumbing work requires approvals and a licensed plumber, and all practitioners must be accredited in Tasmania.^[3]

But: if the structure is built on wheels — a caravan or trailer — and is eligible for registration as a vehicle with the Tasmanian Motor Vehicle Registry, it is not classified as a building.^[3]

That is the fork in the road. Vehicle-registrable means no building permit for the structure itself. It does not mean no planning assessment for living in it, and it does not mean no plumbing rules.

The wastewater trap §

Consumer, Building and Occupational Services sets out a constraint that quietly rules out a lot of off-grid tiny house plans in Tasmania.

Onsite wastewater management systems are accredited under the Building Act 2016 for use in association with the classes of building described in the NCC, and are not permitted for installation independent of, or in isolation from, a class of building recognised under the NCC. Waterless composting toilets are not permitted to be installed in a caravan or trailer-based structure. Onsite wastewater systems are controlled by State regulation because they require an absorption system, and installation must be carried out only by a licensed plumber.^[4]

Read together with the vehicle exemption, this creates a genuine bind: the same wheels that keep a tiny house out of the building system also keep it out of the onsite wastewater system. Anyone planning a rural Tasmanian tiny house on wheels needs a wastewater answer before they need a floor plan.

Crisis accommodation §

The Tasmanian Planning Scheme allows Homes Tasmania and other housing support providers to provide temporary housing solutions for up to three years, which can provide additional options for crisis accommodation for people experiencing homelessness.^[1] This pathway is for providers, not private individuals.

Council by-laws still apply §

Even where a planning permit is not required, other permits or approvals may be. Some councils have by-laws managing the temporary use of caravans and other mobile structures — so the question of how long a mobile tiny house may sit on a block is often a local by-law question rather than a planning scheme one.^[1]

Road limits §

Published guidance puts standard road limits at about 4.3 m in height, 2.5 m in width and roughly 9 m in length for travel without special permits.^[5] For a Tasmanian tiny house on wheels, the vehicle registration status is not incidental — it is the basis of the building exemption, so the unit has to genuinely qualify as a registrable vehicle.^[3]

What to establish before buying §

1. Which zone is the land in, and does the proposal meet the No Permit Required rules for that zone?^[1]
2. Fixed or on wheels — and if on wheels, is the unit genuinely eligible for vehicle registration with the Tasmanian Motor Vehicle Registry?^[3]
3. If it is a secondary residence, is it within 60 m² and does it share services and meters with the main dwelling?^[1]
4. What is the wastewater solution, and is it lawful for this structure type?^[4]
5. Does the council have a by-law limiting the temporary use of mobile structures?^[1]

Related guides §

• Granny flat rules in Tasmania, the ACT and the Northern Territory
• Can you live in a tiny house full time in Australia?
• On wheels or fixed foundation — which should you choose?
• Glossary

References §