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

1010.1.5 Floor elevation.

There shall be a floor or landing on each side of a door. Such floor or landing shall be at the same elevation on each side of the door. Landings shall be level except for exterior landings, which are permitted to have a slope not to exceed 0.25 unit vertical in 12 units horizontal (2-percent slope).

Exceptions: …

6. Doors serving equipment spaces not required to be accessible in accordance with Section 11B-203.5 and serving an occupant load of five or less shall be permitted to have a landing on one side to be not more than 7 inches (178 mm) above or below the landing on the egress side of the door.