Everything about designing a bathroom layout

A bathroom's use case goes beyond personal hygiene. It is a space for refreshment and self-care. This room is typically smaller than others of space, yet is equally (and some would say even more) important than them all.

Creating a functional bathroom layout means considering the size and placement of fixtures such as the sink, toilet, bath, and shower. It's also recommended to keep things practical by ensuring storage for toiletries, towels, and other essentials.
Dimensions 📏
Rules Of Thumb 👍
Layout Examples ✏️
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  • Shower Dimensions
  • Bathtub Dimensions
  • Sink Dimensions
  • Toilet Dimensions
  • Toilet Paper Holder Dimensions

Shower Dimensions

Shower dimensions and typologies vary widely, yet a common range would be between 75x75 cm to 90x120 cm.
Showers can be purchased and installed according to standard sizes or custom-made according to the bathroom layout.

Bathtub Dimensions

A range between minimal to spacious dimensions of bathtubs is roughly 70x150 cm to 90x180 cm.
Different bathtub typologies include free-standing bathtubs, corner bathtubs, Jacuzzi, or classic bathtubs.

Sink Dimensions

Sink dimensions and typologies vary widely:
  • Countertop sink sizes range between 40x40 cm to 46x91 cm~
  • Wall-mounted sinks range between 25x40 cm to 35x60 cm~
  • Corner sinks range between 45x45 cm to 60x60 cm~

Toilet Dimensions

A monoblock toilet size is roughly 75x60 cm. A floating toilet size is approximately 35x50 cm, with a basin installed in the wall behind it that ranges between 7-20 cm. Both types of toilets must be coordinated carefully with the plumbing and wall structure. The toilet should always be centralized in an 80 cm clearance space to allow for comfortable use.

Toilet Paper Holder Dimensions

The size of a toilet paper holder is between 10x12 cm to 22x13.3 cm.
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  • Bathroom Door Clearance
  • Bathroom Window Clearance
  • Sanitary Usage Space
  • Spacing Between Toilet Seat To Paper Holder

Bathroom Door Clearance

Coordinating the sanitary items usage space to the door opening is key when designing a bathroom:
  • Avoid a clash between the door to the sanitary items.
  • A door opening may overlap with a usage space if that is the only option.
  • Ideally, when possible, separate the door opening area and sanitary item usage space.
  • Avoid placing a door directly in front of a toilet in large bathrooms.
  • Useful tip: implement sliding doors to save space in the case of a compact bathroom.

Bathroom Window Clearance

Bathroom windows can be divided into two types: hinged and rail windows. Hinged windows require clearance for opening and closing, while rail windows are flushed with the wall and do not require clearance.
Another important detail is to check the window height and glass type to determine if it will compromise privacy.
Having at least one window in a bathroom is great for ventilation, yet when impossible, mechanical ventilation can be installed.

Sanitary Usage Space

Bathrooms are commonly compact spaces, which makes every centimeter matter! That is why clearance, usage, and circulation space are key.
The minimal usage space in front of a toilet, sink, shower & bath should be a minimum of 75x75 cm. Usage space of different functions may overlap!
When it comes to a toilet, there should be a clear 40 cm from each side of it; so the toilet is centralized in an 80 cm clearance area.

Spacing Between Toilet Seat To Paper Holder

Small details make the difference!
  • Toilet roll holders are typically installed 20-30 cm from the front of the toilet, a maximum of 91 cm from the rear wall, and about 65 cm high.
  • It's common to place the toilet paper holder on the right side of a stall, looking at its door, as most people are right-handed.
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  • Bathroom With Shower
  • Bathroom with Bathtub
  • Separated Toilet Bathroom
  • Free Standing Bathtub Bathroom

Bathroom with Shower

Shower sizes and shapes are flexible, so they allow various design layouts.
They are ideal for compact spaces, as their minimal size can be as small as 75x75 cm. Nevertheless, showers can also be quite spacious, with the dimension of 90x120, for example.
When designing a bathroom with a shower layout, keep in mind showers can be purchased and installed according to standard sizes or custom-made according to the bathroom’s fit.

Bathroom with Bathtub

Choosing between a shower to a bathtub is about personal preferences as well as the dimensions of the bathroom.
The range between minimal to spacious bathtubs is roughly 70x150 cm to 90x180 cm, and its usage space may overlap with other sanitary usage spaces - making it possible to fit a bath even in compact bathrooms.

Separated Toilet Bathroom

When a bathroom is approximately 7-9 m², it may create an opportunity for separating the toilet from the main space (depending on its general shape). This provides privacy and the ability to use other areas of the bathroom while the toilet is occupied.
A useful tip for achieving a separate toilet is implementing a sliding door; this will enable overlapping entrance and usage space and be compactly efficient.

Free Standing Bathtub Bathroom

A free-standing bathtub is commonly an esthetic-based choice; and is recommended to be used in spacious, luxurious bathrooms.
Avoid backing a free-standing bathtub to walls and allow at least ~20 cm around it to allow maintenance. A tap of a free-standing bathtub can be wall or floor based.
‘Happiness Is A Long Hot Bubble Bath’ 🛁
Last modified 1mo ago