California Plumbing Code: California Plumbing Code (Title 24, Part 5) 2025

California follows California Plumbing Code (Title 24, Part 5) 2025 as the basis for plumbing work. Permits and inspections are issued by the local Authority Having Jurisdiction (AHJ), which may publish additional amendments.

The 2025 CPC (effective 2026-01-01) is based on the 2024 UPC with California amendments. Local jurisdictions may amend further.