Norwalk, CA Building Safety: Plumbing Permits (2026)
Key Facts
- Code adopted
- California Plumbing Code, 2025 Edition (2024 UPC base)
- Permit required
- Before installing/replacing plumbing systems, §15.32.050
- Contractor credential
- Certificate of Registration from City/County of LA
- Fees
- Set by City Council resolution, not fixed in code
- Penalty
- Up to $1,000 fine or 6 months jail, per day
Summary
Norwalk enforces the California Plumbing Code, 2025 Edition, adopted by reference at Municipal Code Section 15.12.020, and requires anyone installing or replacing a plumbing or gas system to first obtain a permit from the Building Official under the City's Administrative Code before starting work.
Except as hereinafter provided, the California Plumbing Code, 2025 Edition, based on the 2024 Uniform Plumbing Code as published by the International Association of Plumbing and Mechanical Officials, including the Appendices A through S thereto, is hereby adopted by reference and incorporated herein as though fully set forth herein and shall constitute the Plumbing Code of the City. A copy of the 2025 California Plumbing Code has been deposited in the office of the Building Official and shall be, at all times, maintained by the Building Official for use and examination by the public.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4609620; v5 updated 2025-12-16).
Full Breakdown
020. A copy is kept on file at the Building Official's office for public review. 050 requires any owner or agent who intends to install or replace an electrical, gas, mechanical or plumbing system to first apply to the Building Official and obtain a permit before the work begins. 030 defines the licensing terms used throughout the chapter: the Administrative Authority is the Norwalk Building Official, and journeyman plumbers, gas fitters and plumbing contractors must hold a valid Certificate of Registration issued by the City or County of Los Angeles, since Norwalk relies on the Los Angeles Board of Examiners of Plumbers, Gas Fitters and Sewerage Contractors rather than maintaining its own board.
050 leaves them to be set by resolution of the City Council. Applicants who start plumbing work before securing a permit face the same misdemeanor exposure as any other Technical Code violation.
Violations & Fines
Section 15.12.060 ties plumbing penalties to the Administrative Code's general violations section, 15.32.130: doing or causing unpermitted plumbing, gas, or related work, or otherwise violating the Technical Codes, is a misdemeanor punishable by a fine of up to $1,000, up to six months in County Jail, or both. Each day a violation continues after notice counts as a separate offense, so unpermitted work left in place keeps accruing exposure until it is corrected or permitted.
Frequently Asked Questions
Do I need a permit for a simple plumbing repair in Norwalk?
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Sources & Official References
Other rules in Norwalk
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