Aliso Viejo, CA Outdoor Lighting: Light Trespass & Shielding (2026)
Key Facts
- Core standard
- Shield and design lighting to minimize spillover onto neighboring properties
- Compliance tool
- City can require a photometric site plan analysis
- Parking areas
- Lighting designed to prevent spillover onto neighboring properties
- Parking lighting plan approval
- Planning director and police services department, before building permit
- Park event lighting
- No lighted event started after 9:00 p.m.
- Infraction fine ceiling
- $100.00, $200.00, then $500.00 within one year
Summary
In the City of Aliso Viejo, California, outdoor lighting must be designed and shielded to minimize spillover onto neighboring properties. AVMC 15.62.070(C) lets the city require a photometric site plan analysis showing light intensities within the site and spillover beyond the site boundaries, and parking lot lighting carries its own spillover rule.
A. Applicability. ... All properties shall be subject to the outdoor lighting standards of this section. This section provides standards which allow adequate outdoor lighting for public safety and decorative purposes while minimizing the adverse effects of excessive lighting on adjacent properties and the community. ... C. Intensity and Spillover. The intensity of outdoor lighting shall conform to the provisions of Appendix A of this code. Lighting shall be designed and shielded to minimize spillover onto neighboring properties. In order to assess compliance of proposed projects with lighting intensity and spillover limitations, the city may require a photometric site plan analysis to show lighting intensities within the site and light spillover beyond the site boundaries.
Full Breakdown
The governing text is Aliso Viejo Municipal Code § 15.62.070, which applies to all properties in the city, residential and nonresidential alike (AVMC 15.14.130 and 15.22.110 send both district types to it). Its stated aim is adequate outdoor lighting for public safety and decorative purposes while minimizing the adverse effects of excessive lighting on adjacent properties and the community.
Subsection (C), Intensity and Spillover, makes three points. First, the intensity of outdoor lighting must conform to Appendix A of the city code. Second, lighting must be designed and shielded to minimize spillover onto neighboring properties. The standard is minimization, not a zero-spillover guarantee, and the burden of design sits with the property owner or applicant. Third, to assess compliance of proposed projects with lighting intensity and spillover limitations, the city can require a photometric site plan analysis showing lighting intensities within the site and light spillover beyond the site boundaries.
Parking areas get a stricter, separate statement in AVMC 15.38.070(D). All lighting for parking areas must be designed to prevent spillover onto neighboring properties. Before a parking facility is built, a lighting plan must identify the type, location and height of proposed fixtures, with a photometric analysis showing illumination levels and spillover. That plan has to conform to Appendix A and be reviewed and approved by the planning director and the police services department before a building permit issues.
Section 15.62.070 also controls fixture placement, which affects what crosses a property line. Pole or fence-mounted light sources can be no higher than 24 feet above finish grade in nonresidential districts and 10 feet in residential districts, and building-mounted lights go below the eave line. Parks and playfields must use cutoff shields to minimize spillover of direct rays outside the park site, and no event requiring outdoor lighting can be started after 9:00 p.m.
Violations & Fines
Lighting that violates the spillover standard is a code violation under AVMC 1.06.010: a misdemeanor unless the city attorney or other prosecutor proceeds by infraction. A misdemeanor conviction is punishable by a fine of not more than $1,000 or imprisonment for not more than six months, or both, and the court orders the violation corrected. Infraction fines are not more than $100.00 for a first violation, $200.00 for a second within one year, and $500.00 for each additional violation within one year.
Frequently Asked Questions
What does Aliso Viejo require to limit light spilling onto a neighbor's property?
Can the city ask for a lighting study before approving a project?
Is there a separate spillover rule for parking lots?
Are park lights near homes limited in Aliso Viejo?
Sources & Official References
Other rules in Aliso Viejo
California rules heatmap·Compare Aliso Viejo to another location·View the California outdoor lighting overview
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