Attached ADU Construction

What This Service Involves

An attached ADU shares a wall with your main house, making efficient use of existing structure and utilities. We integrate the new unit seamlessly, adding a private entrance and complete living facilities while respecting your home's design in the Puget Sound region. This approach often reduces foundation and utility costs compared to a detached build. The finished unit provides independent living space with the efficiency of shared construction.

Benefits

Efficient use of your existing structure; Lower foundation and utility costs than detached units; A private entrance and full living facilities; Seamless integration with your home's design; Independent, comfortable living space

Our Process

1) We evaluate where the attached unit can connect; 2) We design the addition and secure permits; 3) We build and tie into existing systems; 4) We finish the unit and add its private entrance

What Affects the Cost

Size of the attached unit; Extent of tie-in to existing systems; Structural modifications to the main home; Interior finish level; Permit and review fees

Best Time of Year

Attached ADU work involves some exterior tie-in, so scheduling the connection during drier weather keeps the existing home protected.