79,066 of the 99,543 lots in Tacoma (79%) 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 6,024 lots are outside the urban growth area, where Pierce County's own ADU rules decide.
7,334 of the 99,543 lots in Tacoma (7%) have septic records on file with the Tacoma-Pierce County Health Department. 23,165 lots are inside a Pierce County sewer service area, and 90,503 are within 300 feet of a sewer main on the county's sewer map.
Vacant land in Tacoma sold for a median of $601,952 per acre across 191 sales since November 1, 2023. Homes sold for a median of $487,950 across 10,664 sales. 3,190 new homes were permitted since November 1, 2021.
Of the 99,543 lots in Tacoma, 7,073 touch a mapped landslide hazard area, 2,827 an erosion hazard area, 2,658 a flood area and 2,327 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 November 8, 2026.
How these numbers are worked out · Guides