2016 California Standards for Accessible Design Pocket Guide - Eff. Jan. 1, 2017

11B-806.2.3.1 Personal lift device floor space.

There shall be a clear space under the bed for the use of a personal lift device. The clear space shall extend under the bed parallel to the long side and be adjacent to an accessible route. The clear space shall extend to points horizontally 30 inches (762 mm), vertically 7 inches (178 mm) and not more than 12 inches (305 mm) from the head and foot end of the bed.