This polygon dataset shows the shows the boundaries of all zoning districts within Nevada County, California for 2013. It is maintained by the Nevada County Planning Department. This layer does not include incorporated areas; City of Grass Valley, Nevada City, and Town of Truckee.Zoning districts exist in order to classify, restrict and regulate the uses of land and structures and to regulate and restrict the height and bulk of structures and to regulate the area of yards, courts and other open spaces about structures. Search for "Zoning Regulations" on myNevadaCounty.com for the latest zoning regulation document for more details.Search for "Zoning Regulations" on myNevadaCounty.com for the latest zoning regulation document for more details. See Metadata for Zoning Code References: Nevada County Codes http://qcode.us/codes/nevadacounty/view.php?topic=3-ii-2-l&frames=on Grass Valley Codes (page 1-8) http://cityofgrassvalleycom-web.s3-website-us-west-1.amazonaws.com/files-archived/services/departments/cdd/DEVELOPMENTCODE/DevCode12_2012red.pdf Nevada City Codes https://www.municode.com/library/ca/nevada_city/codes/code_of_ordinances?nodeId=TIT17ZO Truckee Codes (page 18.06) http://www.townoftruckee.com/home/showdocument?id=8201