It's crucial to provide enough area around fixtures and furnishings when constructing a bathroom so that the space is both functional and comfortable to use. The following rules will help you determine how much space to leave around typical bathroom furniture and fixtures:

Toilet: For easy access, leave at least 15 inches on either side of the toilet.

Sink: If a vanity or storage unit is desired, leave at least 30 inches of room in front of the sink to allow for comfortable use.

Shower: For simple access and to accommodate the installation of a shower bench or caddy, if desired, leave at least 30 inches of space in front of the shower.

Bathtub: If using a bathtub, leave at least 30 inches on either side to allow for easy access and, if desired, the installation of a shower curtain or glass door.

In order to use the vanity comfortably and to allow for the installation of a storage unit or stool, if needed, leave at least 30 inches of space in front of the vanity.

Don't forget to take into account the room's layout as well as the size of the furnishings and fittings in relation to the available space. You may design a practical and comfortable bathroom by leaving enough area around equipment and furniture.