Florida Building Code, Accessibility 2017
203.2 Construction Sites
Structures and sites directly associated with the actual processes of construction, including but not limited to, scaffolding, bridging, materials hoists, materials storage, and
construction trailers shall not be required to comply with these requirements or to be on an accessible route. Portable toilet units provided for use exclusively by construction personnel on a construction site shall not be required to comply with 213 or to be on an accessible route.
ADA
https://www.ada.gov/smtown.htm
Facilities and structures that are built or altered for temporary use must comply with the ADA Standards
(except for construction trailers).
CA Building Code
CBC 11B-201.4 Construction support facilities
These requirements shall apply to temporary or permanent construction support facilities for uses and activities
not directly associated with the actual processes of construction, including but not limited to offices, meeting rooms, plan rooms, other administrative or support functions. When provided, toilet and bathing facilities serving construction support facilities shall comply with Section 11B-213. When toilet and bathing facilities serving construction support facilities are provided by portable units, at least one of each type shall be accessible and connected to the construction support facilities it serves by an accessible route.
Exception: During construction an accessible route shall not be required between site arrival points or the boundary of the area of construction and the entrance to the construction support facilities if the only means of access between them is a vehicular way not providing pedestrian access.
Note if it is used for any other purpose than construction
it SHALL be accessible.