Chapter 4 — PLUMBING FIXTURES AND FIXTURE FITTINGS
408.7 Shower Compartments — 2025 California Plumbing Code
California Plumbing Code (Title 24, Part 5) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Plumbing Code (Title 24, Part 5) § 408.7 · Effective January 1, 2026 · Official source: Building Standards Commission
Shower compartments shall have a finished interior in accordance with the following: (1) Not less than 1024 square inches (0.6606 m [2] ).
(2) Be capable of encompassing a 30 inch (762 mm) circle.
The minimum required area and dimensions shall be measured at a height equal to the top of the threshold and a point tangent to its centerline. The area and dimensions shall be maintained to a point of not less than 70 inches (1778 mm) above the shower drain outlet with no protrusions other than the fixture valve or valves, showerheads, soap dishes, shelves, and safety grab bars, or rails. Fold-down seats in accessible shower stalls shall be permitted to protrude into the 30 inch (762 mm) circle.
Exceptions:
(1) Showers that are designed to be in accordance with Chapter 11A of the California Building Code .
(2) The minimum required area and dimension shall not apply for a shower receptor having overall dimensions of not less than 30 inches (762 mm) in width and 60 inches (1524 mm) in length.
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