University Place, WA: ADUs, septic or sewer, land prices and hazard areas

Can I build an ADU in University Place, WA?

10,496 of the 10,669 lots in University Place (98%) 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 2 lots are outside the urban growth area, where Pierce County's own ADU rules decide.

Septic or sewer in University Place, WA?

1,549 of the 10,669 lots in University Place (15%) have septic records on file with the Tacoma-Pierce County Health Department. 10,524 lots are inside a Pierce County sewer service area, and 9,550 are within 300 feet of a county sewer main.

Land prices in University Place, WA

Vacant land in University Place sold for a median of $1,037,631 per acre across 15 sales since October 1, 2023. Homes sold for a median of $653,500 across 1,005 sales. 4 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.

Landslide, flood and wetland areas in University Place, WA

Of the 10,669 lots in University Place, 248 touch a mapped landslide hazard area, 93 an erosion hazard area, 446 a flood area and 149 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

Other communities in Pierce County