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

Can I build an ADU in Pacific, WA?

0 of the 207 lots in Pacific (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 0 lots are outside the urban growth area, where Pierce County's own ADU rules decide.

Septic or sewer in Pacific, WA?

1 of the 207 lots in Pacific (0%) have septic records on file with the Tacoma-Pierce County Health Department. 6 lots are inside a Pierce County sewer service area, and 0 are within 300 feet of a county sewer main.

Landslide, flood and wetland areas in Pacific, WA

Of the 207 lots in Pacific, 4 touch a mapped landslide hazard area, 1 an erosion hazard area, 205 a flood area and 13 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