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 6921084-CN

6530 21st AVE NW

Add Attached Accessory Dwelling Unit (AADU) and construct alterations to finished basement for additional dwelling unit within existing single family residence per plan.

Permit

Permit type
Building
Class
Residential
Trade
General/Building
Nature of work
Other
Work
Change of Use Only - No Construction
Status
Completed

Dates

Applied
2022-09-14
Issued
2022-12-01
Expires
2024-06-01
Completed
2023-02-23
Time to issue
78 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
2
Days out for corrections
2
Permit class (Seattle detail)
Single Family/Duplex

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

Other permits issued in Seattle, December 2022