Detached ADU Construction

What This Service Involves

A detached accessory dwelling unit, or DADU, gives occupants complete privacy in a separate structure on your lot. We design and build these standalone units from their own foundation, tailoring size and style to your yard and budget across the Puget Sound area. Careful attention to drainage, insulation, and seismic detailing ensures the structure performs in our demanding climate. The finished DADU functions as a fully independent home with its own entrance and utilities.

Benefits

Complete privacy in a standalone structure; A fully independent unit with its own entrance; Design tailored to your yard and budget; Robust drainage and seismic detailing; Flexible use as a rental or family space

Our Process

1) We assess your yard, setbacks, and access; 2) We design the DADU and obtain permits; 3) We build the foundation and structure weather-tight; 4) We finish interiors and connect utilities before handover

What Affects the Cost

Unit size and architectural style; Foundation and site preparation needs; Distance for utility connections; Interior finish selections; Jurisdictional permit and impact fees

Best Time of Year

Because a detached unit requires new foundation and exterior work, scheduling the shell during late spring through early fall protects the build from heavy rain.