Turning a garage into an ADU, bedroom, office, or other living space takes more than new drywall.
What is involved
ADU or living space?
The rules differ, and we sort out which path fits your lot and your goals.
Related
If an air leakage test is required for an ADU, it comes from WA Blower Door. 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.
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
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