10,398 of the 19,300 lots in Bonney Lake (54%) 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 3,253 lots are outside the urban growth area, where Pierce County's own ADU rules decide.
4,639 of the 19,300 lots in Bonney Lake (24%) have septic records on file with the Tacoma-Pierce County Health Department. 11,520 lots are inside a Pierce County sewer service area, and 5,263 are within 300 feet of a county sewer main.
Vacant land in Bonney Lake sold for a median of $608,517 per acre across 41 sales since October 1, 2023. Homes sold for a median of $660,000 across 2,783 sales. 2,226 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 19,300 lots in Bonney Lake, 3,890 touch a mapped landslide hazard area, 873 an erosion hazard area, 756 a flood area and 733 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