2022 California Standards for Accessible Design Guide (effective January 1, 2023)

11B-608.5.1 Transfer type shower compartments.

In transfer type shower compartments, the controls, faucets, and shower spray unit shall be installed on the side wall opposite the seat 38 inches (965 mm) minimum and 48 inches (1219 mm) maximum above the shower floor and shall be located on the control wall 15 inches (380 mm) maximum from the centerline of the seat toward the shower opening.

FIGURE 11B-608.5.1 TRANSFER TYPE SHOWER COMPARTMENT CONTROL LOCATION