The Si

The Si is a pre-approved detached ADU plan from Drift Interiors + Architecture. The public source lists it as 999 sq ft, 3 beds, and 2.5 baths. It originated in the Everett, Snohomish County, Washington, USA program. This directory currently shows acceptance in Everett, Snohomish County, Washington, USA. Source context comes from City of Everett, last checked Aug 13, 2026. Use the linked provider, location, and source records to verify current acceptance before relying on the plan.

Provider record

Drift Interiors + Architecture

Origin program

Everett, Snohomish County, Washington, USA

Accepted location pages

• Everett, Snohomish County, Washington, USA

Plan identifier

The Si

Provider

Drift Interiors + Architecture

Origin location

Everett, Snohomish County, Washington, USA

Accepted locations

• Everett, Snohomish County, Washington, USA (Accepted)

Status

Pre-approved

Size

999 sq ft

Bedrooms

3 beds

Bathrooms

2.5 baths

ADU type

Detached

Construction type

Unknown

Plan fee

Not listed in source

Estimated cost

Not listed in source

Last checked

Aug 13, 2026

Foundation notes

Not listed in source

Utility notes

Not listed in source

Energy notes

Not listed in source

Accessibility notes

Not listed in source

Permit fee notes

Not listed in source

Cost notes

Not listed in source

Additional notes

City-listed pre-approved DADU with an attached garage component.

Publisher

City of Everett

Source type

Official source

Reliability

Official city/county/state government source (5/5)

Last checked

Aug 13, 2026

Accessed

Aug 13, 2026