On December 15, 2021, Mayor Durkan signed Ordinance 126509, which changes the name of “Single Family” zones to “Neighborhood Residential” zones.
Seattle’s Land Use Code and the official zoning maps divide the city geographically into zoning districts (e.g., single-family residential, multifamily residential, commercial, industrial, etc.). Ordinance 126509 applies the new zone name by dividing the neighborhood residential areas into four zones, based on pre-existing minimum required lot sizes: Single-family 9600 (SF 9600), Single-family 7200 (SF 7200), Single-family 5000 (SF 5000), and Residential Small Lot (RSL).