Our office is on 64th St E in Sumner, so this is home turf. We handle plans, energy forms, and permits for ADUs, additions, remodels, garages, and new homes.
Sumner address, which office reviews it
A Sumner mailing address does not always mean a City of Sumner permit. Some parcels fall under Pierce County. We look up the parcel first and tell you which office you are dealing with.
What we see around Sumner
What Build Sherpas does here
We do not build and we do not engineer or stamp. Where engineering is required, our sister firm Dow Engineering PLLC, in the same office, handles it. Air leakage tests come from WA Blower Door.
Send us your address
Send us the address, a few photos, and a sentence about what you want to build. Call 253-799-0606 · Email office@dowengineeringpllc.com · Contact Us
Build Sherpas is a trade name of Dow Engineering PLLC · 16202 64th St E Ste 117, Sumner, WA 98390 · By appointment
Nearby: Puyallup · Bonney Lake · Auburn · Tacoma
Copyright © 2026 Build Sherpas. Part of the Dow Engineering family in Sumner, WA: Dow Engineering PLLC (structural and civil engineering), Build Sherpas (plans and permits), WA Blower Door (energy code testing). 16202 64th St E Ste 117, Sumner, WA 98390 · (253) 799-0606 · office@buildsherpas.com
Areas we serve: Sumner · Puyallup · Tacoma · Bonney Lake · Auburn
ADU plans: Tacoma · Puyallup · Garage conversions
A Dow Engineering PLLC Company