Bathroom layout guidelines and requirements (2024)

The bathroom is one of the most used rooms in a house, so understandably, it can be incredibly frustrating if the space doesn't function as it should!

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Whether you're remodelling or building, designing the perfect bathroom is an exciting and thoughtful process. To help bring your dream bathroom into focus, take time to assess your needs and devise an efficient layout. With a smart strategy in place, it's easier to set a budget, hire contractors, and shop for beautiful finishes.

A functional floor plan is key to building and remodelling success. To determine space-planning requirements, answer the questions below to shed light on how you'll use the space. For an existing bathroom, assess the pros and cons of the current layout. For a new bathroom, think about how your dream space would function.

Questions to ask yourself when planning a layout

Who will use the bathroom?

For example, will two adults share the space during the morning rush hour? Is the bathroom limited to occasional guest usage? Are children who need assistance the primary users? Will you bathe a pet in the bath?

How will it be used?

What activities will be done in the various parts of the room? For example, will you require a place to sit and apply makeup? Will the room also house laundry facilities? What activities can be done in a shared space, and which require a private area? Do you prefer separate shower and bath areas? Would you like a tub that accommodates more than one person? Do you want the water closet in its own compartment?

Where will things go?

What items need to be stored in the bathroom, and where should they be located for easy access?

With that information in mind, you can begin to place the key elements in the room -- the bath, shower, toilet, and sink(s). Not sure where to begin?We've listed three popularbathroom designsbelow. See which one fits your home and needs best.

Standard measurements

In Australia, baths, showers and cabinetry tends to run to a "standard" size, so it's worth considering the below and keeping it in mind while you design.

• Allow a width of at least 750mm for the toilet to reside in, and a length of between 1200 and 1500mm. If your toilet is in a separate space (i.e. its own room) it will need even more space, to account for the door.
• Your shower design should be a minimum of 900x900mm if enclosed.
• If you're going with a freestanding bath, allow at least 200mm between the bath and the wall behind, and 300mm from each end – otherwise, you'll struggle to clean!

Three-quarter bathroom (no bath)

With only one sink and a shower, this is a hardworking plan for a guest bathroom. All plumbing on the same wall saves labour and supply expenses. If visitors will use or see your bathroom, consider what they will first notice from the doorway.

Full bathroom

A bath/shower combination is a good choice for many baths, especially a space that may be used by children as well as adults. The bath's end wall and the way the door opens is a way to help keep the toilet separate from the rest of the space. Often a full bathroom has space for a roomy vanity, or even a double vanity.

Consider walls

Whatever the size of your bath, keep in mind that the more walls that contain plumbing pipes, the higher the price tag. If you're building new and budget is a concern, limit plumbing fixtures to one wall. If you're remodelling, try to keep load-bearing walls where they are and avoid rerouting plumbing and electrical lines. In all cases, remember that varied rooflines, curved walls, arches, bump-outs, and other character-enhancing features will drive up your total price tag.

Next steps

With the layout in place, you can begin to think about design. Collect images of bathrooms you like, and then find the common themes to determine your style. Heading to the store with a clear vision will make it much easier to whittle down the choices forcabinets, hardware, and other finishes.

This article originally appeared on www.bhg.com.