0 of the 1,981 lots in Fox Island (0%) 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 1,936 lots are outside the urban growth area, where Pierce County's own ADU rules decide.
1,210 of the 1,981 lots in Fox Island (61%) have septic records on file with the Tacoma-Pierce County Health Department. 1,973 lots are inside a Pierce County sewer service area, and 101 are within 300 feet of a county sewer main.
Vacant land in Fox Island sold for a median of $267,316 per acre across 13 sales since October 1, 2023. Homes sold for a median of $1,132,500 across 172 sales. 191 new homes were permitted since October 1, 2021.
Of the 1,981 lots in Fox Island, 1,621 touch a mapped landslide hazard area, 695 an erosion hazard area, 633 a flood area and 229 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