ADU Builder in Rainier, WA

A small space with a kitchen and shower puts a lot of moisture into the air, and our winters don't let it dry out on its own. We plan insulation, vapor control and ventilation from the start, keep the foundation dry with drainage and a vapor barrier, and detail the windows and siding against wind-driven rain. A tight, well-vented ADU stays comfortable and keeps its framing sound.

It depends on the size, whether it is detached or over a garage, the foundation, how far utilities have to run and the level of finish inside. Lot conditions like slope or clearing add to it. Greg gives a free estimate after looking at your property and your plans, with a price for your project instead of a ballpark.

In many cases, yes. Washington has pushed cities and counties to allow more ADUs, but the details still vary by jurisdiction, including size limits, setbacks, parking, and septic or sewer capacity. Greg checks the rules for your address during planning so the design fits what will be approved.

Yes. A garage or shop downstairs with living quarters upstairs is one of the most practical builds on acreage. You get space for vehicles and equipment plus a place to live, which can house family or, where the county allows it, serve as your home while the main house goes up.

When a small house sits on a permanent foundation and has a kitchen and bath, it is generally permitted as a dwelling, and often as an ADU if there is already a main house on the lot. That gives you a permanent building that adds to the property rather than an RV-style unit. Greg builds small homes on site this way, start to finish.