Hesperia, CA Outdoor Lighting: Light Trespass & Shielding (2026)
Key Facts
- Glare limit
- 0.5 footcandles max
- Measured at
- Residential district or lot
- Source covered
- Community/regional industrial activity
- Measurement tool
- Photoelectric photometer
Summary
Hesperia caps glare from community or regional industrial activity at 0.5 footcandles as measured on any residential district or lot, protecting neighbors from light spillover.
A. Glare levels shall be measured with a photoelectric photometer, following the standard spectral luminous efficiency curve adopted by the International Commission on Illumination. B. Any activity producing glare in a community industrial or regional industrial district shall be carried on so that direct or indirect light from the source shall not cause glare above 0.5 footcandles when measured in a residential district or lot.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 24 Update 2).
Full Breakdown
Under the development code's general performance standards, any activity producing glare in a community industrial or regional industrial district must be conducted so that direct or indirect light from the source does not exceed 0.5 footcandles when measured in a residential district or on a residential lot. Glare is measured with a photoelectric photometer using the International Commission on Illumination's standard spectral luminous efficiency curve. The rule targets light trespass from industrial uses reaching nearby homes rather than regulating fixture type, shielding, or placement directly.
Violations & Fines
Industrial or commercial glare reading above 0.5 footcandles at a residential property line violates Section 16.20.135 and can be enforced as a public nuisance under Section 16.20.120.
Frequently Asked Questions
Does Hesperia regulate light spilling onto neighboring homes?
How is glare measured under the ordinance?
Sources & Official References
Other rules in Hesperia
California rules heatmap·Compare Hesperia to another location·View the California outdoor lighting overview
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