1,213 of the 5,213 lots in Lake Tapps (23%) 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 3,951 lots are outside the urban growth area, where Pierce County's own ADU rules decide.
3,010 of the 5,213 lots in Lake Tapps (58%) have septic records on file with the Tacoma-Pierce County Health Department. 0 lots are inside a Pierce County sewer service area, and 0 are within 300 feet of a sewer main on the county's sewer map.
Vacant land in Lake Tapps sold for a median of $214,663 per acre across 10 sales since November 1, 2023. Homes sold for a median of $900,000 across 533 sales. 460 new homes were permitted since November 1, 2021.
Of the 5,213 lots in Lake Tapps, 3,523 touch a mapped landslide hazard area, 1,845 an erosion hazard area, 801 a flood area and 938 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 7, 2026.
How these numbers are worked out · Guides