
The average Australian bathroom is 3m x 2m, or 3 metres squared. This is larger than the average bathroom size for a new apartment, which is between 2-3 metres squared. The size of your bathroom can determine how much functionality you can include, and it's important to consider who will be using the bathroom, the measurements required for each feature, and the costs. For example, the Australian National Construction Code (NCC) sets out that bathrooms must have enough space to remove an unconscious occupant in an emergency.
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What You'll Learn

Average bathroom sizes in Australia
The average bathroom size in Australia varies depending on the type of building and the specific features included. Here are some standard dimensions to consider:
Apartment Bathrooms
Bathrooms in new apartments in Australia tend to be smaller, typically ranging from 2 to 3 square metres. This space usually includes essential fixtures such as a toilet, sink, and shower. Some apartments may have even smaller "half baths," which only include a toilet and sink without a shower.
House Bathrooms
Bathrooms in houses generally offer more space, ranging from 3 to 5 square metres. The average size is often quoted as 3 metres by 2 metres, or approximately 6 metres squared. This size allows for a comfortable layout with a toilet, shower, cabinetry, and vanity.
Master Bathrooms
The largest bathroom in a home is typically the master bathroom, which can be larger than the average size. Master bathrooms often include luxurious features such as bathtubs, extra storage, and semi-enclosed toilets. These bathrooms may be designed as an oasis for relaxation and can be quite spacious.
Powder Rooms
The average size of an Australian powder room is around 3.2 square metres (35 square feet). This is a smaller space that may just include a basin and a toilet.
Bathroom Features and Dimensions
When designing a bathroom, it's important to consider the specific features and their dimensions:
- The standard shower size in Australia is 900mm by 900mm, but larger showers are becoming more popular.
- The average bathtub size is 170cm by 70cm, with a height of 400mm.
- The average-sized toilet has dimensions of 68cm by 38cm, although sizes can vary.
- Vanities range from 460mm to 600mm in depth, with an average of 500mm.
- Basin sizes can vary from 370mm to 700mm, depending on the type and number of basins.
- Mirrors should be installed at eye level, typically around 1200mm off the floor.
- The height of tapware varies but is generally around 60-100mm above the wash basin.
- Shower screens should be between 1900mm and 2100mm in height, proportional to the ceiling height.
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Space requirements for fittings
The space requirements for fittings in an Australian bathroom depend on the type of bathroom and the fittings themselves. Here are some general guidelines for different fittings:
Toilet
The average-sized toilet in Australia is 68 cm x 38 cm, but the width of the toilet space should be around 900 mm, with the distance between the centre of the toilet and the nearest wall or basin being approximately 450 mm. The minimum overall clearance is 760 mm. Toilet roll holders should be mounted 200 mm in front of the toilet and 660 mm from the floor.
Sink
The size of a sink can vary depending on whether you opt for a double vanity or a single fixture. They can range from 40 cm to 65 cm or more. The top of the basin should sit between 860 mm and 880 mm off the floor. The tapware should be around 60-100 mm above the wash basin.
Shower
The minimum space needed for an enclosed shower is 0.9 m x 0.9 m. The shower door should be at least 600 mm wide and open without any obstructions. The shower screen's height can range from 1900 mm to 2100 mm, depending on the user's stature and the floor-to-ceiling height. The showerhead should be installed at a height of 1900 mm to 2100 mm.
Bathtub
The average bathtub size in Australia is 170 cm x 70 cm. The standard bath size is typically about 60 inches long, 30 inches wide, and 14-16 inches high.
Vanity
A vanity typically requires around 900 mm in width. The height of the wall-hung vanity should be around 860 mm to 880 mm, with the basin, countertop, and cabinet height adjusted accordingly.
It is important to note that these are general guidelines, and bathroom dimensions in Australia can vary depending on the specific needs and requirements of the user. Consulting with professionals is advisable to ensure compliance with local regulations and to create a functional and comfortable space.
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Bathroom layout and design
The size of your bathroom will depend on the type of property you have. The average bathroom size for a new apartment in Australia is between 2-3 square metres. Bathroom sizes in houses are larger, ranging from 3-5 square metres. The average Australian bathroom size is 3m x 2m, which is approximately 3 square metres. This size will fit a toilet, shower, cabinetry and vanity.
If you are designing a bathroom, it is important to consider the space requirements of each fixture and fitting. The standard bath size in Australia is about 60 inches long, with common dimensions of 60 inches long by 30 inches wide, and a height of 14-16 inches. The average bathtub size is 170cm x 70 cm. A typical bath measures 1500mm x 720mm x 400mm deep. To allow for comfort and ease of cleaning, it is recommended to have 450mm on either side of the toilet. The minimum distance between the rear wall of the toilet and the adjacent wall is usually 1500mm, but this can vary depending on the position of the door and toilet. The average-sized toilet is 68cm x 38cm, but sizes can vary, with the Impero Back To Wall Suite measuring 90cm x 40cm.
The standard shower dimensions in Australia are 900mm by 900mm, but a larger area of 900mm x 1200mm will provide a more pleasant showering experience. The shower screen's height can be between 1900mm and 2100mm, depending on your height. The door to the shower cubicle should ideally be 650mm wide for easy access.
Basin sizes vary, ranging from 370mm to 700mm. The tapware sits around 60 to 100mm above the wash basin. The distance should be large enough to comfortably wash your hands without causing excess splashes. The vanity is another important consideration, with standard depths ranging from 460mm to 600mm, and an average of 500mm from front to back.
When designing your bathroom layout, it is essential to consider the space requirements of each fixture and fitting, as well as the overall flow of the room. You should also think about the specific needs of the users, such as the height of the basin or the inclusion of extra storage. Mirrors should be installed at the eye level of the user.
To create the illusion of more space, consider using light colours, plain tile patterns, and large mirrors. Wall-mounted cabinets can also help to maximise space and create a tidy appearance.
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Budget and customisation
The budget for your bathroom project will largely determine the extent of customisation you can achieve. Building a standard bathroom will be much cheaper than trying to customise the layout and size. However, if you have the budget, you can create a bathroom that suits your specific needs and preferences.
When planning your budget, it is important to consider the cost of materials, labour, and any required permits or inspections. Customisation may increase costs, especially if you require specialised materials or labour. Additionally, the size of your bathroom will impact your budget, as larger bathrooms generally require more materials and labour.
To optimise your budget, you can consider the following strategies:
- Proper planning: Prepare a detailed plan, including measurements, fixtures, fittings, materials, and finishes, well in advance. This will help you avoid last-minute decisions that can be more expensive.
- Standard dimensions: Working within standard bathroom dimensions can be more cost-effective than customising the layout. Standard-sized fixtures and fittings may also be more affordable and readily available.
- Prioritisation: Identify your must-haves and nice-to-haves. Focus your budget on the features that are most important to you, whether it's a luxurious bathtub, custom cabinetry, or high-end finishes.
- Space optimisation: Make the most of your space to avoid unnecessary expansion, which can increase costs. Consider storage solutions such as linen cupboards or wall-mounted cabinets to maximise floor space.
- Creative design: Use design techniques to create the illusion of a spacious bathroom. Light colours, plain tile patterns, large mirrors, and strategic lighting can make a small bathroom feel more open and inviting.
Customisation allows you to tailor your bathroom to your specific needs and preferences. Here are some factors to consider when customising your bathroom:
- User needs: Think about who will be using the bathroom and how it will be used. For example, a family bathroom shared by children may require lower benchtop heights for easier access.
- Functionality: Determine the functionality you want in your bathroom. Do you prefer a relaxing bathtub or a spacious shower? Do you need ample storage for towels and toiletries? Customising your layout and fixtures can create a space that suits your daily routines.
- Comfort and accessibility: Ensure your bathroom provides adequate space for comfort and accessibility. Consider the clearance around fixtures, such as allowing 450mm on either side of the toilet for ease of movement and cleaning.
- Fixtures and fittings: Custom fixtures and fittings can be tailored to your specific needs and design preferences. For example, you can choose a sink or vanity with customised heights and storage options.
- Design aesthetics: Customisation allows you to create a unique design aesthetic. You can select specific colours, materials, and finishes that reflect your style and personality.
In conclusion, the budget and customisation of your bathroom project are interconnected. Proper planning, prioritisation, and strategic design choices can help you achieve a customised bathroom that fits your budget. By considering user needs, functionality, comfort, and design preferences, you can create a space that is both practical and personalised.
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Regulations and safety standards
In Australia, there are specific regulations and guidelines that must be followed when building or renovating a bathroom. These regulations are enforced by local government authorities and building regulatory bodies and are designed to ensure that bathrooms meet the necessary standards for safety, accessibility, and functionality.
- Size and dimensions: The minimum size for a bathroom in Australia is typically 2.5 square metres for a full bathroom, which includes a toilet, basin, and bathtub or shower. The minimum size can vary depending on the state and the type of bathroom, with half bathrooms or powder rooms requiring smaller dimensions of around 1.5 to 1.8 square metres. The average Australian bathroom size is 3m x 2m, while larger bathrooms can be as big as 4 to 5 square metres.
- Toilet placement: Toilets require a minimum width of 900mm, with 800mm of space in front to allow for easy movement. On each side of the toilet, allow around 350mm of space for comfortable use.
- Basin height: The top of the basin should sit between 860 to 880mm off the floor, which is a convenient height for most adults.
- Shower dimensions: The standard shower dimensions in Australia are 900mm by 900mm, but there is a shift towards larger showers. Shower taps should be placed around 1,000mm off the floor to be accessible to everyone.
- Waterproofing: Waterproofing is essential in bathrooms to prevent leaks and meet Australian standards. The average price of waterproofing is about $40 per square metre, and it should last at least 10 years.
- Ventilation: According to the Australian Building Codes Board (ABCB), each room needs a window of at least 10% of the total floor plan. If a window is not desired, an exhaust fan must be installed to allow for adequate air circulation.
- Lighting: Adequate lighting is crucial for safety and functionality. A combination of general, task, and accent lighting should be used, with proper installation of lighting fixtures to protect against electric shock.
- Plumbing: Bathroom plumbing must comply with Australian standards for drainage, water supply, and pipe sizing. This includes ensuring proper installation to prevent issues like leaks and clogs.
- Electrical: Electrical requirements focus on safety, including the installation of appropriate lighting fixtures, power outlets, and safety switches to protect against electric shock.
- Gas appliances: In Victoria, if a gas appliance is connected to the gas line, it may be classified as a complex gas installation. In this case, the project must be lodged with Energy Safe Victoria (ESV) and a gas compliance notice must be obtained.
- Compliance certificates: After completing plumbing or renovation work, it is essential to obtain and keep compliance certificates to ensure protection and compensation in case of any defects.
These regulations and standards aim to safeguard the well-being of occupants and promote efficient use of space in Australian bathrooms. It is important to consult local authorities or professionals for specific code requirements in your region.
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Frequently asked questions
The average size of a bathroom in Australia is 3m x 2m, or 3 metres squared. However, bathrooms in new apartments tend to be slightly smaller, ranging from 2-3 metres squared.
The smallest practical size for a bathroom should generally allow for a small shower cubicle with door access, approximately 900mm x 900mm. Toilets should have a minimum width of 900mm, and you'll need 800mm in front to make it easy to move around.
The average bathtub size in Australia is 170cm x 70cm. You should allow for 450mm on either side of the bathtub for comfort and ease of cleaning.
To maximise space in a small bathroom, consider adding a linen cupboard or wall-mounted cabinet. You can also use light colours, plain tile patterns, and large mirrors to create the illusion of more space.











































