Lake County, CA Building Safety: Plumbing Permits (2026)
Key Facts
- Adopted code
- 2022 CA Plumbing Code (2021 UPC)
- Septic-served parcels
- Sanitation permit required first
- Enforcing office
- Building and Safety Division
- Minimum permit fee
- $25 (Sec. 5-9.2(d))
- Max penalty
- $500 fine and/or 6 months jail
Summary
Plumbing work in unincorporated Lake County runs on the 2022 California Plumbing Code, based on the 2021 Uniform Plumbing Code, adopted by county ordinance. A permit from the Building and Safety Division is required, and on parcels using a private septic system the county also requires a sanitation permit before any building permit can even be issued.
4D.1 That certain Plumbing Code and Appendix, G: Sizing of Venting Systems. known and designated as The 2022 California Plumbing Code, as based on the 2021 Uniform Plumbing Code which is published by the International Association of Plumbing and Mechanical Officials, is hereby adopted and enacted as the Plumbing Code of the County of Lake and is made a part of this chapter by reference with the same force and effect as if fully set forth herein.
Full Breakdown
Sec. 5-4D of the Lake County Code adopts 'The 2022 California Plumbing Code,' including Appendix G on sizing of venting systems, based on the 2021 Uniform Plumbing Code published by the International Association of Plumbing and Mechanical Officials, as the Plumbing Code of the County of Lake with the same force and effect as if fully set forth in the chapter. This sits within Chapter 5's broader Sec. 5-4 code-adoption scheme, most recently amended by Ordinance No. 3131 on March 7, 2023. Lake County layers extra preconditions onto plumbing-adjacent permits: under Sec.
5, no building permit may be issued, nor a plan-check application even submitted, without the Lake County Environmental Health Division first issuing a sanitation permit on any parcel served by a private on-site sewage disposal system. Sec. 7 goes further, barring any permit unless the applicant shows an adequate sewage disposal facility and water supply are immediately available, or will be within four months, certified in writing by the responsible water or sewer provider; until then the building official withholds a certificate of occupancy and full electrical service.
Permits are issued by the Building and Safety Division, with a minimum $25 fee under Sec. 2(d), and the small-accessory-structure exemption in Sec. 1 specifically does not cover plumbing installations.
Violations & Fines
Plumbing work performed without the required permit or sanitation clearance can draw a Notice of Noncompliance or Notice of Violation from the Chief Building Official under Sec. 5-14, with 30 days to correct. The chapter-wide penalty at Sec. 5-14.7 makes a violation of Chapter 5 or its adopted codes an infraction with a fine up to $100, or a misdemeanor with a fine up to $500, up to six months in County Jail, or both, and each day of continuing violation counts as a separate offense.
Frequently Asked Questions
What plumbing code applies in unincorporated Lake County?
Do I need anything before a plumbing permit if I'm on a septic system?
Can I get a permit without confirmed water and sewer service?
Is a small shed's plumbing exempt from permitting?
Sources & Official References
Other rules in Lake County
California rules heatmap·Compare Lake County to another location·View the California building safety overview
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