86,984 of the 99,388 lots in Tacoma (88%) are zoned for houses inside an urban growth area. On those lots, Washington's HB 1337 requires the city or county to allow at least two accessory dwelling units (ADUs). Another 6,030 lots are outside the urban growth area, where Pierce County's own ADU rules decide.
7,335 of the 99,388 lots in Tacoma (7%) have septic records on file with the Tacoma-Pierce County Health Department. 26,665 lots are inside a Pierce County sewer service area, and 18,591 are within 300 feet of a county sewer main.
Vacant land in Tacoma sold for a median of $583,171 per acre across 191 sales since October 1, 2023. Homes sold for a median of $485,000 across 10,576 sales. 3,172 new homes were permitted since October 1, 2021.
Of the 99,388 lots in Tacoma, 7,066 touch a mapped landslide hazard area, 2,819 an erosion hazard area, 3,947 a flood area and 2,328 an inventoried wetland, on Pierce County's maps.
From the Pierce County Assessor-Treasurer, the county's zoning, sewer, hazard and growth-area maps, and the Tacoma-Pierce County Health Department. Records as of October 2, 2026.
How these numbers are worked out · Guides