7,388 of the 27,159 lots in Gig Harbor (27%) 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 18,437 lots are outside the urban growth area, where Pierce County's own ADU rules decide.
12,973 of the 27,159 lots in Gig Harbor (48%) have septic records on file with the Tacoma-Pierce County Health Department. 22,257 lots are inside a Pierce County sewer service area, and 0 are within 300 feet of a county sewer main.
Vacant land in Gig Harbor sold for a median of $127,126 per acre across 145 sales since October 1, 2023. Homes sold for a median of $800,000 across 2,538 sales. 1,529 new homes were permitted on its unincorporated lots since October 1, 2021. The city issues its own permits, which are not in our data yet.
Of the 27,159 lots in Gig Harbor, 15,910 touch a mapped landslide hazard area, 5,168 an erosion hazard area, 4,592 a flood area and 2,587 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