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 6847253-CN

8529 18TH AVE NW

Establish use as single family residence with attached accessory dwelling unit (AADU) and construct alterations in the basement to create a two 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
98117

Dates

Applied
2021-11-30
Issued
2022-03-22
Expires
2023-09-22
Completed
2023-06-02
Time to issue
112 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
2
Days out for corrections
42
Permit class (Seattle detail)
Single Family/Duplex

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

Other permits issued in Seattle, March 2022