US Patent 11186983 Prefabricated building module

A prefabricated building module is described. The building module may provide structural stability for a building, including when stacked with like building modules. The building module may provide a service riser for the building. The building module may provide fixtures for the building, including bathroom, kitchen and laundry fixtures. Also described is a building including prefabricated building modules and a method of constructing a building using prefabricated building modules.