Tiny homes are changing the way people live across Western Australia. Whether you are looking for a spot in the Perth suburbs or a quiet corner of the South West, these small homes offer a way to beat the housing crisis. They provide affordable and sustainable options for many people.

This guide will help you understand the rules so you can plan your project safely. We have updated everything here to reflect the major changes made between 2024 and 2026.

Note: While this guide makes understanding regulations very easy, it should not be considered legal advice. Contact your local council to confirm requirements before proceeding.

Regulations for tiny homes on wheels in Western Australia

In Western Australia, a tiny home on wheels (THOW) is legally seen as a vehicle, not a permanent building. Because it is built on a trailer with wheels, the law treats it just like a caravan.

This means its legality depends on two things: its ability to be moved safely and how its presence affects the health and safety of the neighborhood.

Road transport and registration

If you want to tow your tiny home on a public road in WA, it must be registered (this is often called “licensing” in Western Australia). This process is handled by the Department of Transport (DoT).

Licensing your tiny home

To get your tiny home on the road, you generally need to follow these steps:

  • Get a VIN (Vehicle Identification Number): This is a unique 17-character “fingerprint” for your tiny home. If your builder hasn’t provided one, you must apply for it through the DoT.
  • Pass a safety inspection: You must take your tiny home to an AIS (Authorised Inspection Station). This is a licensed workshop where an expert checks that your brakes, lights, and frame are safe for the road.
  • Pay the fees: You will need to pay for the license, a one-off “stamp duty” (a tax based on the home’s value), and MII (Motor Injury Insurance), which covers personal injury costs in an accident.

Weight limits and your license 

Understanding weight is critical for safety and legal compliance. You need to know two specific figures:

  • ATM (Aggregate Trailer Mass): This is the total weight of the trailer, including the portion of the weight supported by the hitch or jockey wheel. This is the critical figure for registration and braking standards.
  • GTM (Gross Trailer Mass): This is the weight transmitted to the ground only through the trailer’s axles when it is hitched to a vehicle. While useful for axle loads, it does not represent the home’s total weight..

Driver’s License Requirements 

In Western Australia, your license category is determined by the GVM (Gross Vehicle Mass) of the towing vehicle, not the weight of the tiny home.

  • Class C (Car) License: In WA, license classes are based on the towing vehicle’s GVM, not the trailer. You can tow a tiny home of any weight (provided your car is mechanically rated for it) as long as the vehicle you are driving has a GVM of 4.5 tonnes or less.
  • LR/MR Licenses: You only need a higher license class if your towing vehicle exceeds a GVM of 4.5 tonnes.

Standard dimensions (no permit required)

To tow your tiny home without needing a special “oversize” permit, it must fit within these legal limits:

  • Width: Maximum 2.5 meters. This includes everything—even the wheel guards, spare tires, and folded-up awnings.
  • Height: Maximum 4.3 meters from the ground to the highest point of the roof.
  • Length: Maximum 12.5 meters, including the “drawbar” (the metal arm that connects the trailer to your car).

Oversize loads and permits

If your tiny home is wider than 2.5 meters, it is legally considered an “oversize load.” This is very common for “extra-wide” designs that offer more living space inside.

You cannot simply hitch up and drive. You must follow extra rules from Main Roads WA Heavy Vehicle Services (HVS):

  • Apply for a permit: You will need a specific “Oversize” permit from Main Roads for your trip.
  • Use signage: You must display yellow “Oversize Load” signs on both the front of your towing vehicle and the back of the tiny home.
  • Pilot vehicles: If your home is wider than 3.5 meters, you are usually required to have a “Pilot Vehicle” (an escort car with flashing lights and a sign) to warn other drivers.
  • Time restrictions: In the Perth metro area, you are often banned from moving oversize loads during peak hour traffic (7:00 am – 9:00 am and 4:00 pm – 6:00 pm).

You can check the latest permit costs and rules on the official Main Roads WA website.

Living in a tiny home on wheels

If you want to stay in your tiny home on wheels for more than a few days, you need formal permission from your local council (the Shire or City). Thanks to recent changes in Western Australian law, this is now much more flexible than it used to be.

The September 2024 regulatory amendment

In September 2024, the Western Australian Government updated the Caravan Parks and Camping Grounds Regulations 1997. Before this change, local councils could generally only allow you to live in a tiny home on private land for up to 3 months.

Local councils now have the power to approve you living in a tiny home on wheels on a private property for up to 24 months (two years) at a time. This change recognizes tiny homes as a legitimate option for long-term living, especially during the housing crisis.

Re-application and renewal

Your 24-month approval is not a “one-off” deal. The 2024 rules specifically allow you to re-apply once your first two years are up.

As long as you have followed all the rules and haven’t caused issues for your neighbors, you can ask the council to renew your permit for another 24 months. While this is at the “discretion” of the council (meaning they have the final choice), it provides a clear pathway for you to stay in your home long-term.

Approval prerequisites

To get your 24-month permit, you must prove to the council that your home is safe and hygienic. The most important part of this is your plan for “wastewater” (the water that goes down your drains).

Waste management and health rules

All tiny homes in Western Australia must follow the Health (Treatment of Sewage and Disposal of Effluent and Liquid Waste) Regulations 1974. These rules ensure that waste is handled safely so it doesn’t make people sick or pollute the ground.

  • Blackwater: This is the waste from your toilet. You must either connect to the main street sewer or have an approved “on-site” system.
  • On-site sewage: If you are in a rural area without a street sewer, you will likely need a Septic System (a large underground tank) or an ATU (Aerobic Treatment Unit), which uses oxygen and bacteria to clean the waste.

Greywater: diversion vs. treatment

“Greywater” is the water from your shower, bathroom sinks, and laundry. In WA, there are two main ways to handle it:

  • Greywater diversion: This uses a simple device to send the water straight from your pipes into your garden. In WA, this must be done via “sub-surface irrigation” (pipes buried under the soil) so that people and pets don’t come into contact with it.
  • Greywater treatment: This is a more advanced system that cleans the water to a higher standard so you can reuse it for flushing your toilet or even in your washing machine.

Sensitive catchments

A “catchment” is an area of land where all the water drains into a specific river, lake, or the ocean. Some areas in WA are “sensitive catchments” (like the Peel-Harvey area or land near the Swan River).

If your land is in a sensitive area, the council may require you to use a high-quality treatment system that removes “nutrients” (like phosphorus and nitrogen) from your waste. This prevents those chemicals from leaking into our rivers and causing harmful algae blooms.

When you don’t need council approval for your THOW

There are some specific situations where you can use a tiny home on wheels (THOW) without going through a long approval process. These exemptions (legal “free passes”) are designed to give you flexibility for short stays or help you out in a crisis.

The 5-night rule

As of September 1, 2024, the Western Australian Government updated the rules for camping on private land. This is found in Regulation 11 of the Caravan Parks and Camping Grounds Regulations 1997.

You are allowed to stay in a tiny home on wheels on land you own—or land where you have the owner’s permission — without needing any council approval, as long as it is only for a short time.

  • The limit: You can stay for up to 5 nights in any 28-day period.
  • No notification: You do not have to call the council or fill out any forms for these short stays.
  • The catch: If you stay for a 6th night within that same 28-day window, you are technically breaking the law unless you have a 24-month permit from the council.

Regulation 11(1)(a): A person may camp for up to 5 nights in any period of 28 consecutive days on land the person owns or has a legal right to occupy.

Emergency housing exemptions

Western Australia has special rules to help people who have lost their homes to natural disasters like bushfires or floods. These rules allow you to live in a tiny home on your property while you clean up and rebuild.

When a major disaster happens, the Minister for Planning can issue a Notice of Exemption (a formal order that cancels normal planning rules). Under these notices, you are often allowed to place a tiny home on your land for a set period—sometimes up to two years—without a full Development Application (DA).

If you are rebuilding after a disaster:

  • Fast-tracked living: You can usually move into your tiny home much faster than someone building for fun or lifestyle.
  • Safety checks: Even though you don’t need a full planning permit, the council will still check that your home is safe, has a working toilet, and is not in a dangerous spot (like a high-risk flood zone).
  • Time limits: These exemptions are temporary. Once the “recovery period” ends or your new house is finished, the exemption usually stops, and you must either move the tiny home or apply for a permanent permit.

You can find updates on active disaster exemptions on the WA Government’s State of Emergency planning page.

Regulations for tiny homes on foundations in Western Australia

If you want to build a tiny home that is permanently fixed to the ground, it is no longer just a “caravan.” Legally, it becomes a building. In Western Australia, these are called ancillary dwellings (a technical name for a second, smaller home on the same lot).

WA currently has some of the most progressive rules in the country for these types of homes.

The 2024 R-Codes Amendments

The R-Codes (Residential Design Codes) are the state’s official rulebook for building houses. They decide how big a house can be and where it can sit on your land.

In March 2024, a major set of changes to these codes (the ‘Part B’ amendments for ancillary dwellings) took effect across Western Australia. These reforms were the critical turning point that removed minimum lot sizes and increased the size limit for tiny homes on foundations to 70m2

The state government’s rules now overrule most local council restrictions that used to make tiny homes difficult to build. If your tiny home meets the standard state rules, the council generally cannot say no.

Removal of minimum lot size

For a long time, you were only allowed to build a tiny home if your land was a certain size — usually at least 35m2 to 450m2. This meant people with smaller suburban backyards were locked out.

The minimum lot size rule has been completely abolished (removed). You can now build a tiny home on foundations on almost any residential block in WA, regardless of how small the land is.

If you have a small “cottage lot” or a modern suburban block, you are now legally allowed to add a tiny home, provided you still have enough room for things like outdoor space and setbacks (the distance between your home and the fence).

Broadened zoning for villas and strata lots

In the past, tiny homes were mostly restricted to “green title” lots (standard standalone houses). 

The 2026 rules have expanded where these homes can go. You are now permitted to build a tiny home on:

  • Grouped dwellings: This is the plain-English term for villas or townhouses where multiple houses are built on one piece of land.
  • Strata lots: This refers to properties where you share “common property” with neighbors, such as driveways or gardens.

If you live in a townhouse with a small backyard, you can now apply to build a tiny home there. You will still need to check your “Strata By-laws” (the private rules for your complex), but the state planning law is now on your side.

The 70m2 floor area rule

Western Australia is very generous when it comes to the size of your tiny home. While many other states cap small homes at 60m2, Western Australia allows up to 70m2

This 70m2 limit refers to the internal floor area (the space inside the walls).

What is included:

  • All living areas, bedrooms, and bathrooms.
  • Built-in cupboards and hallways.

What is NOT included:

  • Carports or garages: You can build a garage next to or under your tiny home without it counting toward your 70m2 limit.
  • Verandahs and patios: Outdoor living spaces do not count toward the size limit.
  • Storage sheds: Small external sheds are usually excluded as well.

This means you can actually build a very comfortable two-bedroom home with a large deck and a garage, and it will still legally count as a “tiny” ancillary dwelling.

The approval process for fixed tiny homes

Getting your tiny home on foundations ready for living involves two different types of “green lights” from the authorities.

  1. Planning approval: This looks at where the home is on your land and how it affects the neighbors. This is often called a DA (Development Application).
  2. Building approval: This looks at how the home is built to make sure it won’t fall down or catch fire. You get this through a Building Permit.

Skipping the DA

Thanks to the April 2026 rules, many tiny homes can skip the planning approval (DA) stage entirely. This happens if your design is deemed-to-comply.

“Deemed-to-comply” simply means your tiny home fits all the standard state rules perfectly. If you follow the rules for size, height, and distance from the fence, the government “deems” (decides) that you have complied with the law, and you don’t need to ask for special permission.

The benefits for you:

  • Saves money: You don’t have to pay the DA fee, which can be $150 to $500.
  • Saves time: You can go straight to the building permit stage, skipping weeks of waiting for a planning officer to review your file.

Understanding setbacks

A setback is the “no-build zone” or the minimum distance required between your tiny home and your property boundary (the fence).

For most standard suburban blocks (known as R20 or R40 zones), your tiny home usually needs a:

  • Side and rear setback: Between 1 meter and 1.5 meters from the fence.
  • Front setback: Usually much further back (often 6 meters) to keep the street looking tidy.

If you try to build right up against the fence, you will lose your “deemed-to-comply” status. You would then have to apply for a full DA and explain to the council why you need to be so close to the boundary.

Mandatory building permits

Even if you skip the planning stage, you must have a building permit. You cannot legally start building or move in without one. In Western Australia, there are two ways to apply:

1. The “certified” path (the fast track)

This is the most popular choice for tiny homes. You hire a private building surveyor to check your plans before you send them to the council.

  • The CDC (Certificate of Design Compliance): This is a document signed by your surveyor. It proves that your tiny home meets all Australian safety and engineering rules.
  • The result: When you give the council a signed CDC, they must legally process your building permit within 10 business days.

2. The “uncertified” path (the slow track)

You send your plans directly to the council and let their internal team do the checking. This is often cheaper up-front, but the council has up to 25 business days to get back to you, and they may ask for more changes.

NCC class 1a standards

Your tiny home must be built to the NCC (National Construction Code) Class 1a standard. This is the same set of rules used for a standard full-sized house.

To be legal for full-time living, your tiny home must include:

  • A dedicated kitchen: Including a sink and space for cooking.
  • A bathroom: With a shower or bath, a toilet, and a washbasin.
  • Structural integrity: An engineer must sign off that the frame can withstand WA’s winds and soil conditions.
  • Termite protection: A physical or chemical barrier to stop bugs from eating the frame.
  • Fire safety: Interconnected smoke alarms must be installed. If you are in a bushfire area, you will also need to use fire-resistant materials like toughened glass and non-combustible cladding.

Sustainability and site requirements

Building a tiny home on foundations in Western Australia is not just about the layout; it is about making sure the home is comfortable to live in and safe from the environment. There are two major “site” rules you must follow: how your home handles the weather (energy efficiency) and how it handles the risk of fire.

Energy efficiency: the 7-star standard

As of May 1, 2025, Western Australia moved from a 6-star to a mandatory 7-star NatHERS rating for all new homes.

NatHERS (the Nationwide House Energy Rating Scheme) is a 0-to-10-star system that measures how well your house keeps you warm in winter and cool in summer without using too much electricity.

A 7-star rating is quite high. To reach it, your tiny home will likely need:

  • Better insulation: Thicker “batts” (the fluffy material in your walls and roof) to trap heat.
  • Orientation: Placing your largest windows facing north to catch the winter sun.
  • Glazing: You will often need double-glazed windows (two layers of glass with air in between) rather than standard single glass.

Whole-of-home budget

Starting in 2026, you also need to meet a “Whole-of-Home” energy budget. This looks at your fixed appliances — like your hot water system and air conditioner — to make sure they don’t use too much power.

Bushfire attack level (BAL)

In Western Australia, many of our favorite tiny home spots (like the Perth Hills or the South West) are in Bushfire Prone Areas. If your land is in one of these “red zones” on the state map, you must get a BAL assessment.

BAL stands for Bushfire Attack Level. A qualified expert visits your site and gives it a rating based on how close you are to trees and bushes. It measures the risk from embers (tiny sparks blowing in the wind), radiant heat (the heat you feel from a distance), and direct flames.

The six levels of risk:

  • BAL-Low: Very low risk; no special fire-building rules.
  • BAL-12.5 to BAL-29: Low to moderate risk; you will need things like metal flyscreens and toughened glass.
  • BAL-40: High risk; the home must be built to withstand significant heat and potential flame contact.
  • BAL-FZ (Flame Zone): Extreme risk; the home is directly in the path of a fire.

If your site is rated BAL-40 or BAL-FZ, your building costs will be significantly higher. This is because you have to use specialized materials that won’t melt or ignite.

  • BAL-40: You can expect to pay between $45,000 and $65,000 extra compared to a standard build. This covers fire-rated window systems and non-combustible wall cladding (like fiber-cement or metal instead of wood).
  • BAL-FZ: This is the most expensive. Costs can jump by $50,000 to $120,000 or more. You may be required to install “fire shutters” (metal covers for your windows) and use extra-thick fire-rated insulation.

Go to the DFES Map of Bush Fire Prone Areas and type in your address. If your land is highlighted in pink, you must book a BAL assessment before you even apply for a building permit.

Short-term rental rules

If you plan to rent out your tiny home to tourists or short-stay guests (using platforms like Airbnb or Stayz), you must follow Western Australia’s specialized rental laws. As of 2026, the rules for short-term stays are much stricter than they used to be to ensure there are enough long-term homes for locals.

The state-wide STRA register

Since January 1, 2025, it has been mandatory for every short-term rental in Western Australia to be listed on the STRA (Short-Term Rental Accommodation) Register. This is a central database managed by the state government.

Before you can even post an ad for your tiny home, you must register the property and receive a unique registration number. You will need to display this number on your Airbnb or Stayz listing.

Cost estimate:

  • Initial registration: $250.
  • Annual renewal: $100.

You can register your property through the official WA Consumer Protection website.

Hosted vs. unhosted stays

The government divides tiny home rentals into two categories based on where you (the owner) stay during the guest’s visit.

Hosted tiny homes

This is when you live on the same property while the guests are in the tiny home. For example, if you live in the main house and rent out a tiny home in the backyard, it is “hosted.”

  • Planning approval: In almost all parts of WA, hosted stays are exempt from planning approval (DA). This means you generally don’t need to ask the council for permission to rent it out, provided you are registered on the state register.

Unhosted tiny homes

This is when guests have exclusive use of the entire property, and you do not live there during their stay.

  • Planning approval: These are seen as more impactful on the neighborhood. In most cases, you will need a Development Application (DA) from your local council to operate an unhosted tiny home legally.

The 90-night rule (Perth metro only)

If your tiny home is located within the Perth metropolitan area, there is a special “grace period” for unhosted rentals.

You can rent out an unhosted tiny home for up to 90 nights per year without needing a DA. This is intended for people who only want to rent out their space occasionally.

The catch:

If you plan to rent it out for 91 nights or more, you must apply for full planning approval from your council. The government monitors this through the state-wide register, so it is important to be honest about your booking numbers.

Safety and quality standards

To protect your guests and your property, every tiny home used for short-term stays must meet basic safety standards.

  • Smoke alarms: You must have working, interconnected smoke alarms (meaning if one goes off, they all go off).
  • RCDs (Residual Current Devices): These are safety switches that cut off electricity if there is a fault. You must have at least two installed.
  • Public liability insurance: Most councils require you to have insurance that covers you if a guest is injured on your property.
  • Maximum stay: Under WA law, a “short-term” stay is usually anything less than 3 consecutive months. If a guest stays longer, they may legally become a long-term tenant with different rights.

Visit the WA Planning Reform website to see the full list of requirements for your specific region. Even if you don’t need a DA, you must still register on the state-wide database before welcoming your first guest.

How WA’s tiny home regulations compare to other states

If you are looking at tiny home rules across the country, you will notice that Western Australia has recently moved into a “lead” position. Since the 2024–2026 reforms, WA has become one of the most welcoming states for both mobile and fixed tiny homes.

Here is how Western Australia stacks up against the other major states as of April 2026.

The 70m2 advantage

The most significant difference is how much space you are allowed to have. In the world of tiny homes, every square meter counts.

  • Western Australia (WA): You are allowed a maximum of 70m2 of internal floor area for an ancillary dwelling (a fixed tiny home).
  • New South Wales (NSW) and Victoria (VIC): These states generally cap their “granny flats” or small second homes at 60m2.
  • South Australia (SA): Perfectly matches WA’s baseline. Thanks to major recent structural reforms, SA now allows fixed tiny homes (officially called ancillary accommodation) up to 70m² in size, completely moving away from its old 60m² restriction.

    Learn more about tiny home rules in South Australia.
  • Tasmania (TAS): Currently caps fixed secondary residences at 60m² under standard rules. While the state is processing Draft SPP Amendment 01/2026 to increase this to 90m², this is not yet legally enacted. Building over 60m² right now forces you out of fast-track pathways and into a complex Discretionary Planning Application.

    Learn more about tiny home rules in Tasmania.
  • Queensland (QLD): Offers a highly decentralized, generous approach to floor space. While there is no single statewide limit, local planning schemes dictate caps that generally outsize WA’s 70m² threshold. For example, Brisbane City Council and the Gold Coast allow up to 80m², Logan City Council permits up to 100m² on larger lots, and Ipswich City Council allows up to 120m² for “Accepted Development.”

    Learn more about tiny home rules in Queensland.

That extra 10m2 in WA is the size of a standard spare bedroom or a large walk-in pantry and laundry room. This makes a 70m2 WA tiny home feel much more like a permanent “house” than a 60m2 unit in the eastern states.

The 24-month permit lead for THOWs

Western Australia’s approach to Tiny Homes on Wheels (THOWs) is now one of the most flexible in the country.

  • Western Australia: Under the 2024 updates, local councils can grant you a permit to live in a THOW on private land for up to 24 months. Most importantly, you can apply to renew this permit when it expires.
  • New South Wales: While you can host a THOW, guests are typically limited to 60 days total per year. Staying longer often requires complex “caravan park” approvals.

    Learn more about tiny home rules in NSW.
  • South Australia (SA): You are generally only allowed to live in a temporary structure like a THOW for up to 2 years if your main home was destroyed by a fire or flood.
  • Tasmania: Extremely restrictive for mobile living. Local municipal bylaws frequently cap unpermitted THOW occupancy at just 30 days per calendar year. To stay longer, you must secure a Caravan Licence, a Temporary Occupancy Permit, or prove you hold an active building permit to construct a permanent home on the lot.
  • Queensland: Lacks a uniform statewide grace period for mobile living, passing the power completely to individual local council bylaws. This creates a regulatory lottery: Brisbane City Council permits stays as long as they don’t cause a neighborhood nuisance, while the Sunshine Coast imposes a strict limit of 4 weeks per year without a permit, and Gympie cuts that down to 2 weeks in an 8-week period. Long-term mobile living outside of household-dependent use typically requires a Temporary Home permit, which is restricted to active building projects.
  • Victoria (VIC): Operates on a highly fragmented, council-by-council local law system that makes long-term unpermitted living very difficult. For unapproved guest stays, most Victorian councils cap occupancy at 28 to 60 days per calendar year, with some strict regions cutting this down to just 2 consecutive nights per visit. However, a select few progressive councils have bypassed state bottlenecks by introducing local bylaws.

    Learn more about tiny home rules in VIC

Western Australia is currently the only state with a clear, state-wide system that allows for multi-year living in a mobile tiny home on a standard residential block, provided you get that council permit.

Freedom from lot size rules

If you want to build a tiny home on foundations, the size of your land used to be a major “deal-breaker.”

  • Western Australia: Since April 2024, there is no minimum lot size required to build a tiny home on foundations. If it fits on the block and meets the “setback” rules (the distance from the fence), you can build it.
  • New South Wales: To use the “fast-track” approval (known as a CDC or Complying Development Certificate), your land must usually be at least 450m2. If your block is smaller, the process is much harder and more expensive.
  • Victoria: While VIC has also removed many lot size rules, they still have a 300m2 threshold for certain exemptions. In WA, even a 200m2 block can legally host a tiny home.
  • Tasmania: Like WA, Tasmania offers a “No Permit Required” (NPR) fast-track pathway that skips the full council planning queue entirely. However, the catch is structural dependence: the tiny home must share the main house’s existing driveway, parking, and utility meters. Installing separate billing meters from TasNetworks or cutting a new driveway crossover instantly reclassifies your project as a “Multiple Dwelling” development, triggering harsh zoning restrictions and expensive infrastructure levies.
  • Queensland: Operates a highly streamlined “Accepted Development” framework. If your project sits on a standard lot with no environmental overlays (like bushfire or flood zones) and meets local council size benchmarks, you can completely skip the planning permit phase and go straight to building certification. However, Queensland introduces a major financial hurdle: Infrastructure Charges. If the build is deemed a “Dual Occupancy” due to design factors like independent utility meters or separate driveways, councils frequently hit owners with a one-off infrastructure fee ranging from $15,000 to $30,000 before signing off on occupancy.

Western Australia has removed the “size barriers” that still hold back tiny home owners in the eastern states. This makes WA the most flexible place in Australia to start a tiny home project on a small suburban block.

FAQs

What permits do I need for a tiny house in Western Australia?

Fixed tiny homes (on foundations) generally require two main approvals:

  • Building Permit: This includes a CDC (Certificate of Design Compliance), which is a safety sign-off from a private building surveyor.
  • 7-Star NatHERS Certificate: A report proving your home meets the new energy efficiency standards (Nationwide House Energy Rating Scheme).

Tiny homes on wheels (THOWs) must be registered as a trailer with the Department of Transport (DoT). If you plan to live in it for more than 5 days, you will also need a Temporary Accommodation permit from your local Shire.

Can I live in a tiny house full-time?

Yes, provided you follow the specific rules for your home type. Fixed tiny homes are legal permanent residences once they have a building permit. Tiny homes on wheels can be lived in full-time for up to 24 months at a time, as long as they are located on a property that already has a main house. You can usually apply to the Shire to extend this stay when your permit expires.

Do mobile tiny homes need a building permit?

No, as long as they remain registrable as a vehicle and stay on their wheels. If you remove the wheels or fix the home permanently to the ground, it is no longer a “vehicle” in the eyes of the law. At that point, it becomes a building and you must apply for a standard building permit.

Are there zoning restrictions for tiny homes?

Yes. Fixed tiny homes are permitted in most residential and rural zones as “ancillary dwellings.” Thanks to the 2024 updates, they are even allowed on strata lots (properties with shared driveways or common land). Tiny homes on wheels are more restricted and usually require an existing primary house to be on the lot first. Always check your property’s R-Code (residential density rating) on the PlanWA map.

Can I rent out my tiny home?

Yes. If you are renting it out long-term, you must follow the Residential Tenancies Act. If you want to rent it out for short holidays (like Airbnb), you must register the home on the State-wide STRA Register (Short-term Rental Accommodation) and pay a registration fee. Some local councils have extra rules for “unhosted” rentals, so check with your Shire first.

What about off-grid tiny homes?

Off-grid systems like solar power and rainwater tanks are allowed, but your waste management must be approved. You are required by law to have an approved way to handle sewage. This usually means connecting to the main sewer or installing a Health Department-approved septic tank or greywater system.

Will my secondary dwelling in WA be rated separately by council?

Usually, no. In WA, you will typically continue to receive one rates notice for your entire property. However, building a tiny home increases your property’s GRV (Gross Rental Value). This is a calculation of how much your property could be rented for. When the GRV goes up, your total council rates will also increase. Expect a “valuation adjustment” notice once your home is finished.

What license do I need to tow a tiny home? 

A standard Class C license is sufficient as long as your towing vehicle’s GVM is 4.5 tonnes or less. While tiny homes over 4.5t (ATM) are considered “Heavy Trailers” and require specific braking systems and registration, they do not automatically require you to upgrade your driver’s license unless you switch to a larger towing truck.