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Yolo County, CA Building Safety: Plumbing Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Adopted code
2019 California Plumbing Code
Governing section
Yolo County Code § 7-1.02(e)
Fee amendment
Table 104.5 replaced by county fee schedule
Permit issuer
Chief Building Official
Permit expires
12 months if work not started
Appeal deadline
30 days to Planning Commission
Max penalty
$500 fine and/or 6 months jail per day

Summary

Yolo County requires a plumbing permit for work in the unincorporated area under the 2019 California Plumbing Code, adopted in Sec. 7-1.02(e) and amended in Sec. 7-1.08 to replace the code's own fee table with the county's fee schedule.

City-specific rules exist: West Sacramento has its own plumbing permits rules that differ from Yolo County's county-level regulations. If you live in West Sacramento, check the city-specific page instead.

The 2019 California Plumbing Code including Appendix Chapters: A- Recommended Rules for Sizing the Water Supply System, C-Alternate Plumbing Systems, D-Sizing Storm Water Drainage Systems, H- Private Sewage Disposal Systems, and I-Installation Standard for PEX Tubing Systems for Hot- and Cold-Water Distribution, as published in Title 24, Part 5 of the California Code of Regulations and amended in Section 7-1.08.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: 2026 S-21: Supplement 2026 S-21 includes: Local legislation current through Ord. 1584, effective June 25, 2026).

Full Breakdown

Sec. " Sec. 5 with the current fee schedule as adopted by the Board of Supervisors," so plumbing permit fees track the county's own fee schedule rather than the model code's table. Because Sec. 5 (Sec. 1 (Sec. 4 (Sec. 04(a)(10)).

Violations & Fines

Installing or altering plumbing without the required permit is a misdemeanor under Sec. 1-2.01, punishable by a fine of up to $500, up to six months in county jail, or both, with every additional day of unpermitted work counted as a separate offense, plus the Section 109.4.1 investigation fee charged before the county issues a permit after the fact.

Frequently Asked Questions

What plumbing code applies in unincorporated Yolo County?
The 2019 California Plumbing Code, adopted by Sec. 7-1.02(e) with its appendix chapters on water supply sizing, alternate plumbing systems, storm drainage sizing, and private sewage disposal, then amended by Sec. 7-1.08 to use the county's own permit fee schedule.
How are plumbing permit fees set in Yolo County?
Sec. 7-1.08 replaces the plumbing code's own fee table, Table 104.5, with "the current fee schedule as adopted by the Board of Supervisors," the same schedule the county uses for building, electrical, and mechanical permits under Title 7.
How long does a plumbing permit stay valid?
Under Section 105.5, a plumbing permit expires if work is not started within 12 months of issuance or is suspended or abandoned for 180 days; reviving an expired permit costs half the original fee.
What happens if plumbing work is done without a permit?
Section 109.4.1 requires an investigation fee equal to the full permit fee before the county will issue one retroactively, and the unpermitted work is also a misdemeanor under Sec. 1-2.01, with a fine of up to $500 and up to six months in jail.

Sources & Official References

Other rules in Yolo County

Building PermitsSome RestrictionsChildcare Center RulesSome RestrictionsGreen Building CodeSome RestrictionsBuilding InspectionsSome RestrictionsFire Sprinkler RequirementsSome RestrictionsElectrical PermitsSome RestrictionsNoise Ordinances: Decibel LimitsSome RestrictionsParking Rules: Loading ZonesSome RestrictionsAnimal Ordinances: Pet Groomer RulesLight RestrictionsAnimal Ordinances: BeekeepingSome RestrictionsAnimal Ordinances: Veterinary Clinic ZoningSome RestrictionsAnimal Ordinances: Exotic PetsSome Restrictions

All Yolo County rules

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Plumbing Permits in Cities Across Yolo County

West Sacramento, CA