Preview 436,579 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 6912232-CN

815 21ST AVE

Add Detached Accessory Dwelling Unit to exisitng single family residence and Construct foundation to install factory built single family dwelling 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
98122

Dates

Applied
2022-08-17
Issued
2022-09-16
Expires
2024-03-16
Completed
2023-03-30
Time to issue
30 days

Value and contractor

Declared value
Log in with your free account
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
1
Permit class (Seattle detail)
Single Family/Duplex

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

Other permits issued in Seattle, September 2022