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ADUs permits in Seattle, WA

14 permits issued in the last 14 days · $4,340,556 total estimated project value · 50 tracked since 2026-07-27 · Source: City of Seattle Open Data · Updated September 09, 2026

IssuedAddressWork descriptionEst. value
2026-09-085029 45TH AVE S · 98118Allow new detached accessory dwelling unit to existing single family use per land use code. Construct new one family dwelling and remove existing detached garage per plan.
ADUs
$165,191view
2026-09-083722 BAGLEY AVE N · 98103Construct alterations to one-family dwelling per plan. (Establish use as a detached accessory dwelling unit per land use code Existing single-family residence and detached access
RemodelingADUs
$1,000view
2026-09-048619 17TH AVE NE · 98115Construct west two-family dwelling (Establish use as single-family residence & allow attached accessory dwelling unit (AADU) per land use code. Construct (2) two-family dwellings
ADUs
$539,475view
2026-09-048621 17TH AVE NE · 98115Construct east two-family dwelling (Establish use as single-family residence & allow attached accessory dwelling unit (AADU) per land use code. Construct (2) two-family dwellings
ADUs
$561,981view
2026-09-02533 NE 92ND ST · 98115Allow new detached accessory dwelling to existing single family use per land use code. Construct new one family dwelling per plan.
ADUs
$225,220view
2026-09-011119 A 27TH AVE · 98122Construct two-family dwelling per plan. (Establish use as single family residence with attached and detached accessory dwelling units per land use code. Construct as one- and two-
ADUs
$567,409view
2026-09-01335 NE 120TH ST · 98125Construct new south one-family dwelling per plan. (Allow two detached accessory dwelling units to existing single-family use per land use code. Construct (2) one-family dwellings
RemodelingADUs
$211,813view
2026-09-01333 NE 120TH ST · 98125Construct new middle one-family dwelling per plan. (Allow two detached accessory dwelling units to existing single-family use per land use code. Construct (2) one-family dwellings
RemodelingADUs
$219,040view
2026-08-311119 C 27TH AVE · 98122Construct one-family dwelling per plan. (Establish use as single family residence with attached and detached accessory dwelling units per land use code. Construct one- and two-fam
ADUs
$142,539view
2026-08-282644 S MORGAN ST · 98108Construct NW SFD per plan [Allow additional single family dwelling unit with detached accessory dwelling units per land use code. Construct as middle NW and NE single family d
ADUs
$219,636view
2026-08-282646 S MORGAN ST · 98108Construct NE SFD per plan [Allow additional single family dwelling unit with detached accessory dwelling units per land use code. Construct as middle NW and NE single family d
ADUs
$219,636view
2026-08-282642 S MORGAN ST · 98108Construct MIDDLE SFD per plan [Allow additional single family dwelling unit with detached accessory dwelling units per land use code. Construct as middle NW and NE single fami
ADUs
$490,442view
2026-08-275610 BEACH DR SW · 98136Establish use as single family residence with attached accessory dwelling unit per land use code. Construct new two family dwelling with attached parking per plan. Shoring is incl
ADUsFoundation
$776,174view
2026-08-27331 NE 120TH ST · 98125Construct alterations to existing one-family dwelling per plan. (Allow two detached accessory dwelling units to existing single-family use per land use code. Construct (2) one-fam
RemodelingADUs
$1,000view

Every row is a property owner who just got city approval to start a adus project — or a competitor's job you can learn from. Data is public record, refreshed daily by PermitsRadar.

Other trades in Seattle, WA

Decks & PatiosDemolitionFoundationRemodelingRoofing

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