Abstract: Assembly time of a modular washroom may be reduced when compared to assembly of a conventional washroom, thereby reducing delays in occupancy of building units such as those in a strip mall. In one embodiment, a modular washroom comprises coupling devices on adjoining walls that are easily accessible so that the modular washroom may be more easily and quickly moveable than a conventional washroom. In one embodiment, the modular washroom comprises components that receive compliance certification prior to installation into a building structure, thereby reducing delays related to compliance inspections that typically occur after construction of a washroom at the building site.