DC prohibits excessive outdoor lighting that spills onto neighboring properties through zoning and nuisance regulations. Property owners must direct and shield outdoor lights to prevent light trespass, and complaints can be filed through the 311 system.
Light trespass in DC is addressed through the zoning code (11 DCMR) and nuisance provisions. Commercial, industrial, and multi-family developments must submit lighting plans during the permitting process showing that fixtures are directed downward and shielded to prevent spillover onto adjacent residential properties. The Board of Zoning Adjustment (BZA) may impose lighting conditions on special exception or variance approvals. For existing light trespass issues, residents can file complaints through 311 or directly with the Department of Buildings. Persistent light trespass may also be addressed through civil nuisance claims. DDOT manages streetlight complaints and can adjust public lighting fixtures causing issues.
Light trespass complaints are investigated by DOB. Property owners may be required to modify or shield lighting. Persistent violations may result in fines and mandatory corrective action through code enforcement.
Washington, DC
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See how Washington's light trespass rules stack up against other locations.
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