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Yolo County, CA Outdoor Lighting: Light Trespass & Shielding (2026)

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

Key Facts

Applies to
Clarksburg Agricultural District overlay zone
Requirement
Lighting shielded, directed away from homes
Same subsection
Events limited to 9 a.m. to 10 p.m.
Governing section
Sec. 8-2.401(d)(4)
Enforcement
County abatement under Sec. 1-5.04

Summary

Agricultural tourism and special event venues in the Clarksburg Agricultural District overlay zone can't point exterior lights at the neighbors. Sec. 8-2.401(d)(4) requires all exterior lighting on these Clarksburg farm-based facilities to be shielded and directed so it doesn't directly shine into adjoining residences, one of five standard operating conditions attached to Clarksburg tourist and event permits.

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

(4) Exterior lighting shall be shielded and directed in such a manner as to not directly shine into adjoining residences.

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. 401. Subsection (d), titled Other Conditions, attaches five standard operating requirements to uses permitted under that table, and lighting is one of them: exterior lighting must be shielded and directed so it does not shine directly into adjoining residences. , requires farm stays and bed and breakfast inns to meet CCDEH and CURFFL food-safety guidelines, requires pools and spas used by guests to meet Building and Health and Safety Code standards, and allows portable toilets in place of permanent systems with Environmental Health Director approval.

401 assigns to the specific use, from a stand-alone wine tasting room to a large special event facility with more than eighteen events a year.

Violations & Fines

Pointing exterior lighting at a neighboring residence from a Clarksburg agricultural district venue violates Sec. 8-2.401(d)(4) and the operating conditions of the underlying Site Plan Review or Use Permit. Sec. 1-5.04 treats the violation as a public nuisance subject to county abatement, and the county's Enforcement Official can issue a courtesy notice or administrative citation, with the permit itself subject to conditions, suspension, or revocation for repeated noncompliance.

Frequently Asked Questions

Does Yolo County have a general outdoor lighting ordinance?
Not a single countywide light trespass ordinance covering every property. Sec. 8-2.401(d)(4) requires shielded, neighbor-directed-away lighting specifically for agricultural tourism and special event uses in the Clarksburg Agricultural District overlay zone, as one of five standard operating conditions attached to permits under Table 8-2.401.
What other conditions come with the Clarksburg lighting rule?
The same subsection, Sec. 8-2.401(d), limits outdoor events to 9 a.m. to 10 p.m., requires farm stays and bed and breakfasts to meet state CCDEH and CURFFL food guidelines, requires guest pools and spas to meet Building and Health and Safety Code standards, and allows portable toilets with Environmental Health Director approval.
Who enforces the Clarksburg lighting shielding requirement?
Yolo County Code Enforcement, acting under Sec. 1-5.04, can treat a violation as a public nuisance, issue a courtesy notice or administrative citation, and pursue conditions, suspension, or revocation of the underlying Site Plan Review or Use Permit for the venue.

Sources & Official References

Other rules in Yolo County

All Yolo County rules

California rules heatmap·Compare Yolo County to another location·View the California outdoor lighting overview

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