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Established in 1850 alongside California's admission to the Union, Yolo County has a rich historical legacy that spans over 170 years. From the historic Woodland Opera House built in 1885 to the Yolo County Courthouse on the National Register of Historic Places, the county's architectural heritage reflects a community that values preservation.
Across its 1,024 square miles encompassing Davis, West Sacramento, Winters, and Woodland, Yolo County maintains a careful balance between honoring its historical character and addressing modern needs. This balance is evident in the county's approach to lighting regulations, which aim to provide necessary illumination while preserving the integrity of its communities and rural night skies.
For property owners and developers needing a fast overview, here are the key lighting requirements in Yolo County:
The county's foundational lighting principle is straightforward: all outdoor lighting must be located, adequately shielded, and directed so no direct light falls outside the property line or into the public right-of-way in accordance with the County Zoning Ordinance.
Additional regulations reinforce this core principle, stating that all lighting shall be arranged and controlled so as not to illuminate public rights-of-way or adjacent properties. This creates a consistent standard across different sections of the code.
For properties adjacent to homes, special attention is required. Exterior lighting shall be shielded and directed in such a manner as to not directly shine into adjoining residences, providing an additional layer of protection for residential areas.
Parking facilities must balance security with considerate design:
The regulations also address the physical characteristics of parking lot lighting:
Yolo County prioritizes pedestrian and driver safety in its sign illumination requirements. Lighting for illuminated signs shall be arranged to prevent hazardous glare for pedestrians or vehicles on either public streets or private premises.
The county specifically prohibits certain lighting techniques for signage:
Limited exceptions exist for:
Energy storage facilities have specific lighting limitations:
Cannabis operations have some of the most detailed lighting requirements:

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For events and recreational facilities, the code simply states that "adequate lighting shall be provided sufficient to serve the expected spectators or participants." This somewhat flexible requirement allows appropriate lighting based on the specific needs of each event.
For large special events, particularly those with over 150 participants, the approval process includes conditions to regulate potential impacts, including lighting, to protect neighboring properties and agricultural operations.
When Federal Aviation Administration (FAA) lighting is required for wind energy systems or aviation facilities:
Mining activities within 1,500 feet of residences have special requirements, including providing adequate lighting of the area when conducting nighttime activities.
Property owners in Yolo County should understand that lighting compliance isn't just about following rules—it's about being a good neighbor and preserving the character that makes the county special.
When planning new exterior lighting:
If you're involved with special uses like cannabis cultivation, energy storage, or event venues, be aware that additional, more stringent lighting requirements apply to your operations.
At Bock Lighting, we share Yolo County's commitment to balancing practical lighting needs with preserving community character. As a manufacturer with roots dating back to 1918, we understand how thoughtful lighting contributes to both safety and aesthetic preservation.
Our experience working with communities that value their historical heritage helps us appreciate Yolo County's careful approach to lighting regulations. From the historic Woodland Opera House to rural agricultural areas, each part of the county deserves lighting solutions that enhance rather than detract from its unique character.
We're particularly aligned with Yolo County's emphasis on shielded lighting that prevents light trespass while maintaining adequate illumination for safety. Our team serves as a resource for understanding how to implement lighting that meets both regulatory requirements and community expectations.
As lighting technology evolves, we remain committed to solutions that respect community character and local regulations while embracing innovations that improve energy efficiency and reduce light pollution.
Yolo County's lighting regulations reflect its commitment to balancing modern needs with historic preservation and environmental consciousness. By preventing light trespass, protecting residential areas, and preserving dark skies, these regulations help maintain the county's character while ensuring adequate illumination for safety and security.
For property owners, businesses, and developers, understanding these regulations isn't just about compliance—it's about contributing to the community vision that has guided Yolo County since its founding in 1850. Through thoughtful lighting practices, residents can help preserve the county's unique blend of historic charm and rural character for future generations.