Westminster, CA Outdoor Lighting: Dark Sky Rules (2026)
Key Facts
- Governing section
- Municipal Code § 17.300.040(B)
- Core rule
- Shield or direct all light to stay on-site
- Dark-sky clause
- No significant increase in overall ambient illumination
- Enforcing agency
- Community Development Dept., Zoning Clearance review
- Penalty
- Misdemeanor or infraction, each day a new violation
Summary
Westminster requires every exterior light fixture, from parking lot poles to building floodlights, to be designed, arranged, directed, or shielded so illumination stays on the property under Municipal Code Section 17.300.040(B)(1). The same provision bars any significant increase in overall ambient illumination, the city's dark-sky control, and pairs it with fixture integration, uniformity, low walkway lighting, and mandatory entrance security lighting.
Outdoor lighting can present a negative visual and/or psychological effect on individuals, especially in areas where residential uses abut or are in close proximity to commercial, office, or industrial areas. This Section outlines the provisions for the installation and operation of outdoor lighting. Exterior lighting shall comply with the following requirements: 1. All exterior lighting shall be designed, arranged, directed, or shielded in such a manner as to contain direct illumination on-site, thereby preventing excess illumination and light spillover onto adjoining land uses and/or roadways. Additionally, outdoor lighting shall be located and designed to prevent a significant increase in the overall ambient illumination. 2. All lighting fixtures shall be architecturally integrated with the character of the principal structure(s). 3. Uniformity or, where appropriate, compatibility of lighting type (i.e., height, wattage, energy efficiency, base support, finish material, texture, color, and style of poles and luminaires) shall be provided. 4. Landscaping and pedestrian-walkway lights shall have a low height.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: rev 4982734; v10 updated 2026-06-10).
Full Breakdown
040 opens by naming the problem directly: outdoor lighting can present a negative visual and psychological effect on individuals, particularly where homes sit next to commercial, office, or industrial property. To address that, subsection B sets five standards that apply to every exterior fixture in the city, not just new construction. 040(B)(1) is the backbone: fixtures must be designed, arranged, directed, or shielded to keep illumination on-site, and lighting must also be located and designed to prevent a significant increase in the overall ambient illumination, the section's dark-sky clause.
3). 5. 035. Because the standard is written as a design requirement rather than a numeric footcandle cap, staff has discretion to require additional shielding, cutoff fixtures, or reduced wattage on a project-by-project basis when a submitted lighting plan would spill glare onto neighboring homes or increase ambient glow above what the section allows.
Violations & Fines
Outdoor lighting sits in Title 17, so violations fall under the citywide Enforcement chapter, Section 17.650.010: an unshielded or nonconforming fixture is declared a public nuisance subject to civil abatement, and any violation of Title 17 is a misdemeanor that the City Attorney may instead prosecute as an infraction. Each day the noncompliant lighting remains counts as a separate violation, and construction can also draw a Stop Work Order.
Frequently Asked Questions
Does Westminster limit how bright outdoor lights can be?
Do walkway and landscape lights have their own rule?
Who enforces Westminster's outdoor lighting standards?
Sources & Official References
Other rules in Westminster
California rules heatmap·Compare Westminster to another location·View the California outdoor lighting overview
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Dark Sky Rules in Nearby Cities
How other cities in Orange County handle dark sky rules.