Mission Viejo, CA Building Safety: Plumbing Permits (2026)

Sec. 390 makes the California Plumbing Code, 2025 Edition, including Appendices A, B, C, D, G and J and based on the 2024 Uniform Plumbing Code as published by the International Association of Plumbing and Mechanical Officials, the Plumbing Code of the City of Mission Viejo, with a copy on file for public examination in the Building Official's office. The Plumbing Code sits alongside the Building, Residential, Mechanical and Electrical Codes adopted by Sec. 010 as part of the city's unified Building Regulations. The chapter's definition of new development for stormwater-permitting purposes under Sec.

110 separately flags that a nonresidential plumbing permit, one authorizing construction of facilities conveying liquids other than stormwater, potable water, reclaimed water or domestic sewage, can itself trigger the requirement to comply with the city's water quality development standards before the permit issues. 02's general permit rules, Sec. 090's work-before-permit penalty applies equally to plumbing: starting plumbing work without the necessary permit adds an investigation fee equal to the required permit fee, on top of the permit fee itself, without excusing compliance with any other code provision. Fees for plumbing permits are set by City Council resolution under Sec. 030 rather than fixed in the ordinance text.