HILL RIDGECONSTRUCTIONS LLC
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ADUs & conversions

Make room for independent living on your property.

Detached cedar ADU opening to a garden
  • Detached ADUs
  • Attached living spaces
  • Existing-space conversions
King, Snohomish & Pierce counties
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Project spotlight

A backyard house converted into an ADU Seattle

Before: an older detached backyard house with weathered siding, mature trees, and an overgrown approach
Before
After: converted backyard dwelling with a refreshed exterior, defined entry, landscaped yard, and path
After
The starting point
An older detached house stood at the rear of the property, with a weathered exterior and overgrown approach.
The work
We converted the existing backyard house into an ADU and refreshed the entry and outdoor approach.
The result
The result is a separate backyard dwelling with a defined entry, a finished path, and landscaped surroundings.

ADUs & conversions: common questions

Does an existing garage automatically qualify for conversion?

No. The structure, proposed use, site, and applicable requirements need review. An existing building alone does not establish that a dwelling conversion is feasible.

Where should an ADU discussion start?

With the property address, current building information, intended use, and any drawings or surveys already available.

Should I consider a conversion or a detached ADU?

Compare the existing structure, access, utilities, privacy, and the intended use. The applicable jurisdiction must confirm what is permitted for the specific property.