Sacramento County Zoning Code § 405-30 Prohibition

No building, structure, vehicle, or land in the R-2 zone shall be used nor shall any building, structure or vehicle be erected, altered, moved, enlarged or stored except as hereinafter specifically provided in this Article and subject to all the regulations and conditions enumerated in this Article and except as otherwise provided in this Division; nor shall any area be used in any manner so as to create problems inimical to the public health, safety, or general welfare or so as to have a detrimental effect on the use or value of property in the vicinity or within the County of Sacramento as a whole. Off-site signs are prohibited.