Graffiti is a serious problem that creates visual blight and diminishes property values. Graffiti is a crime and should be reported to the Contra Costa County Sheriffs Department. Occasionally, the markings are gang related and promote violence in the area. The quick removal of the graffiti is one of the most effective deterrents of additional “tagging.” Additionally you may contact the following departments; for publicly owned property such as street signs, sidewalks and freeway underpasses marked with graffiti should be reported to the Public Works department at (925) 313-7000 or email us. Privately owned property such as the sides of buildings and fences should be reported to Code Enforcement (925) 674-7210 or Toll Free at (877) 646-8314.