REPORT A PROPERTY VIOLATION If you wish to file a complaint regarding potential code violation on a private property, you may do so by using this website or calling 311. The Los Angeles Department of Building and Safety is responsible for investigating code violations on existing single family residential, commercial, industrial and vacant buildings inside the City of Los Angeles. For service requests regarding properties with two or more dwelling units (duplexes and apartment buildings), please contact the Los Angeles Housing Department at (866) 557-7368. For service requests regarding abandoned, inoperative or junk vehicles, please call 311. The following information is required when submitting a service request:             Property address requiring attention             Your name             Your phone number Your personal information will remain confidential. If you wish to remain anonymous, please contact 311.