Ordinance 77-106, introduced in March 1977, established the Airport Open Use (AOU) zoning classification for areas around major airports like Sea-Tac, allowing compatible economic activities such as agriculture, public parks, commercial recreation, and public utility facilities while protecting neighboring residential areas. The ordinance sets strict conditions on signage, building setbacks, landscaping buffers, and livestock density to minimize conflicts with adjacent residential zones. Uses like golf courses, outdoor storage, and cemeteries require conditional use permits when the property borders residential (R or S) zones.Open full document
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A substitute ordinance introduced to King County Council on March 14, 1977, establishing a new Airport Open Use (AOU) zoning classification consistent with the Sea-Tac Communities Plan open space policies. The ordinance defines permitted uses such as agriculture, public parks, botanical gardens, and cemeteries, as well as conditionally permitted uses including commercial recreation, public utilities, and outdoor storage. It also sets limitations on buildings, signage, and landscaping requirements near residential properties.