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 6887161-CN

3439 NW 57th ST

Alterations to existing single family residence to convert to a detached accessory dwelling unit per plans. (Establish use as a single family residence with an attached accessory dwelling unit and construct a two-family dwelling. Alter existing one-family dwelling to convert to a detached accessory dwelling unit. Reviews and processing for two construction records under 6875131-CN)

Permit

Permit type
Building
Class
Residential
Trade
General/Building
Nature of work
New
Work
New
Status
Expired

Dates

Applied
2022-03-10
Issued
2023-01-30
Expires
2024-07-30
Time to issue
326 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

Review cycles
0
Days out for corrections
0
Permit class (Seattle detail)
Single Family/Duplex

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

Other permits issued in Seattle, January 2023