How Concord Handles Outdoor Lighting: A Practical Guide
Concord maintains 85 local ordinances across all categories, and 2 of those deal specifically with outdoor lighting. Here is a breakdown of what the city actually requires, what is prohibited, and where Concord falls on the strict-to-permissive spectrum compared to other cities.
Dark Sky Rules
Concord does not have a formal dark-sky ordinance but CMC Title 18 requires exterior lighting to be shielded, downcast, and not spill onto neighboring properties. New development must submit a photometric plan demonstrating zero foot-candle spillover at property lines.
Key details: Photometric Plan: Required commercial/multifamily. Property Line Light: Zero foot-candles residential. Shielding: Full-cutoff IESNA definition. Color Temperature: 3000K max residential areas. Dark Sky Park: Mt. Diablo State Park IDA park.
Contact your local code enforcement office for specific penalty information.
Light Trespass
Concord prohibits light trespass onto neighboring properties under CMC nuisance provisions and the Development Code's outdoor lighting standards. Exterior lighting must be shielded so zero foot-candles reach adjacent residential property lines.
Key details: Zero Foot-candles: Zero foot-candles at residential property line. Fully Shielded: Fully shielded fixtures required. Cmc Title: CMC Title 8 and Civil Code 3479 nuisance remedies. Sign Curfews: Sign curfews typically 11 PM in residential-adjacent zones. Code Enforcement: Code Enforcement handles complaints.
Contact your local code enforcement office for specific penalty information.
The Bottom Line
Concord'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 Concord is broadly strict or permissive.
This guide is based on Concord's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.