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 1,935 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. 83 lots are inside a Pierce County sewer service area, and 119 are within 300 feet of a sewer main on the county's sewer map.
Vacant land in Fox Island sold for a median of $280,114 per acre across 12 sales since November 1, 2023. Homes sold for a median of $1,150,000 across 183 sales. 191 new homes were permitted since November 1, 2021.
Of the 1,981 lots in Fox Island, 1,621 touch a mapped landslide hazard area, 694 an erosion hazard area, 599 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 November 8, 2026.
How these numbers are worked out · Guides