Translation guide
A prefabricated bathroom unit, typically made of fiberglass or plastic, installed as a single piece. In Japan, these are the standard in most modern homes and apartments.
Referring to the physical bathroom unit that is factory-made and installed as one piece.
The most common term for a modular bath in Japan. It refers to the entire prefabricated bathroom unit, including the tub, floor, and walls.
This apartment comes with a modular bath.
Often used interchangeably with ユニットバス, but can imply a more customizable or higher-end modular bathroom system.
Modular baths are easy to clean.
A more technical term, literally 'prefab bathroom'. Used in construction or architectural contexts.
Prefab bathrooms can shorten construction time.
Describing a bathroom where the toilet and bathtub are in the same room, typical of older or budget Japanese apartments.
While often used interchangeably, ユニットバス is the generic term for any prefabricated bathroom unit. システムバス is a trademarked term by some manufacturers but is commonly used to refer to modular baths with more features or customization options. In everyday conversation, ユニットバス is more common.
Unit baths are cheap, but system baths are high-function.
In English, 'modular bath' can refer to a bathroom that is assembled from pre-built components on site. In Japan, ユニットバス is a completely factory-assembled room that is lifted into place. Be aware of this difference when discussing construction methods.
This property has a combined bath and toilet.