With fixtures Set out along one wall, this layout is suited to a long, narrow room.
With this layout, in one room shower and bathtub are situated, the toilet in another and Vanity in between called “Foyer Area” which is used to access both the area. This layout is perfect for a family where there are multiple user at a time in bathroom. However you will need a large area for such type of layout. There are no strict rules in this layout.
In Galley Style bathroom, fixtures are on opposite walls. Generally bathtub and toilet are on one side, while vanity, Shower and Storage on other. This type of layout suits where two entries are required (Like two-way bathroom/ensuite). Minimum recommended width of walkway in galley style bathroom is 900mm.
The L-Shape layout generally has either bathtub or vanity along the end wall, and all the other remaining fixtures on adjacent wall. This type of layout can reduce the cost of plumbing as water supply and wasted can be located together.
Island can be used long with any other previous layouts. In bathroom island features a free standing fixture like a bathtub or vanity in middle of the room. Provided the minimum clearances are maintained which is only possible in a very spacious room. This concept can be used as bath treated as a feature or sculpture and is sometime integrated into a bedroom.
Depending on the location of the house there might be the opportunity to integrate bathroom with external elements like gardens and courtyard. In home with a pool or close to beach it can be seen as a resort quality, high end bathroom.