Preview 316,582 permits — every permit Chicago, Austin and Seattle issued in the last ten years. The full load is in progress, so this is how far it has got. Sourced from city open-data portals. Data as of 2026-09-20.

Seattle · permit 6742377-CN

7737 21ST AVE NW

Construct alterations to existing single family residence to convert basement into Attached Accessory Dwelling Unit (AADU) and construct new detached accessory dwelling Unit (DADU) per plan.

Permit

Permit type
Building
Class
Residential
Trade
General/Building
Nature of work
Alteration
Work
Addition/Alteration
Status
Completed

Location

City
SEATTLE
State
WA
ZIP
98117

Dates

Applied
2019-12-04
Issued
2020-03-02
Expires
2021-09-02
Completed
2021-02-24
Time to issue
89 days

Value and contractor

Declared value
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Total fee
N/A. Total fee is a premium field which requires a paid plan. However, this permit has no fee on record.

Seattle details

Housing category
Middle Housing
Review cycles
3
Days out for corrections
17
Permit class (Seattle detail)
Single Family/Duplex

Data as of 2026-09-20. View the city's record

Other permits issued in Seattle, March 2020