Madera County, CA Outdoor Lighting: Light Trespass (2026)

Madera County does not have a stand-alone light-trespass or spillover-lighting standard in its zoning code for typical homes and businesses. The most specific containment rule in the code is in the Land Use Regulations chapter (Section 18.88), which requires that all exterior lighting associated with an emergency shelter be located, adequately shielded, and directed such that no direct light falls outside the property perimeter or into the public right-of-way. That standard is a useful model for what light containment looks like, but by its terms it applies only to emergency shelters, not to all properties. For other land uses, the county addresses spillover light and glare on a discretionary basis: the conditional use permit findings in Chapter 18.92 require that a proposed use not be hazardous, harmful, noxious, offensive, or a nuisance by reason of glare or similar factors, allowing the county to impose lighting and shielding conditions when it approves a project. Because there is no fixed numeric limit on light crossing a property line, existing residential lighting that bothers a neighbor is generally not a zoning-code violation; it may instead be pursued, if at all, as a private nuisance. Property owners are encouraged to use shielded, downward-aimed fixtures and to direct light away from neighboring homes and roadways to avoid disputes, even though the county does not currently mandate it for ordinary residences.