Downey, CA Outdoor Lighting: Light Trespass & Shielding (2026)
Key Facts
- Glare limit
- 0.5 foot-candles at any lot line
- Where measured
- Any point on the property's lot lines
- Applies to
- Every zone, all uses and development
- Governing section
- Downey Municipal Code § 9516.06(g)
- Related standard
- Separate shielding rules under § 9520.06
Summary
Downey caps light trespass at 0.5 foot-candles measured at any point on a property's lot lines under Municipal Code Section 9516.06(g), a citywide performance standard that applies to every zone and every use, from a residential yard light to commercial and industrial fixtures, enforced alongside the City's separate outdoor lighting shielding rules.
All activities, uses, and operations in every zone shall be conducted in accordance with the applicable statutes, laws, ordinances, rules, and regulations of all governmental pollution control agencies having jurisdiction. ... (g) Glare. No operation, activity, or lighting fixture shall create illumination which exceeds 0.5 foot-candles at any point on the lot lines of the use.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4807734; v5 updated 2026-01-27).
Full Breakdown
5 foot-candles at any point measured on the lot lines of the property where the light originates. 5 foot-candle ceiling covers everything from a homeowner's yard floodlight to a shopping center's parking lot fixtures and an industrial site's security lighting, not just commercial glare sources. The measurement point is the property boundary itself, so a fixture can be bright on the source property as long as it does not push measurable illumination above the threshold onto a neighbor's land or the public right-of-way. 06 outdoor lighting rules, which govern fixture height, wattage and shielding rather than the quantitative brightness limit at the lot line.
06 also regulates related nuisance effects on adjoining property, including vibration exceeding three-thousandths of an inch measured at the lot line, and odors or toxic gases noticeable beyond the lot line, showing the glare limit is one piece of a broader nuisance-abatement chapter enforced by the City's Building and code enforcement staff.
Violations & Fines
A lighting fixture, activity, or operation that pushes illumination above 0.5 foot-candles onto a neighboring lot line is a code violation subject to a Code Enforcement citation and an order to re-aim, shield, or reduce the offending fixture. Because Section 9516.06 is a general performance standard applying in every zone, it applies equally to a homeowner's yard light and a business's parking lot fixture.
Frequently Asked Questions
How bright can my outdoor lighting be before it violates Downey's code?
Does the glare limit apply to businesses only?
What is the difference between the glare limit and the outdoor lighting shielding rules?
Sources & Official References
Other rules in Downey
California rules heatmap·Compare Downey to another location·View the California outdoor lighting overview
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