Costa Mesa's Outdoor Lighting: The Rules That Matter

Every city handles outdoor lighting a little differently. In Costa Mesa, California, there are 2 distinct rules that residents and property owners should be aware of. Some are stricter than what neighboring cities enforce, and others are more relaxed. Here is what you need to know.

Light Trespass

Costa Mesa prohibits outdoor lighting from unreasonably shining onto neighboring properties under its nuisance standards in Title 20 and development standards in Title 13. Exterior lighting must be designed and directed to prevent light trespass, and residents can file complaints about misdirected lighting through Code Enforcement.

Key details: Nuisance Standard: Title 20 - Property Maintenance. Development Standard: Title 13 - Zoning. Fixture Requirement: Shielded and downward-directed. Complaint Process: File with Community Improvement. Hotline: (714) 754-5638.

Light trespass complaints are handled by Code Enforcement. Persistent violations may result in administrative citations and fines. Commercial properties may face additional penalties under zoning enforcement. Contact Code Enforcement at (714) 754-5623 or the hotline at (714) 754-5638.

Dark Sky Rules

Costa Mesa regulates outdoor lighting through its zoning and development standards to minimize light pollution, glare, and impacts on neighboring properties. While the city does not have a standalone dark sky ordinance, new development must comply with lighting standards including shielding requirements and California Title 24 energy efficiency standards for outdoor lighting.

Key details: Standalone Dark Sky Ordinance: No. Shielding Required: New construction/remodels. State Standards: CA Title 24 applies. Nuisance Standard: Title 20 applies. Code Enforcement: (714) 754-5623.

Outdoor lighting that creates a nuisance to neighbors may be subject to code enforcement action under Title 20. Non-compliant lighting on new development may result in plan check corrections or stop-work orders. Contact Code Enforcement at (714) 754-5623.

The Bottom Line

Costa Mesa's outdoor lighting rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Costa Mesa is broadly strict or permissive.

These rules come from Costa Mesa's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.