Preview 555,290 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 2026-09-21.

Seattle · permit 6874780-CN

1912 N 135th ST

Construct detached accessory dwelling unit (DADU) to existing single-family residence per plan

Permit

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

Location

State
WA

Dates

Applied
2021-12-29
Issued
2022-03-17
Expires
2023-09-17
Completed
2023-03-14
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
16
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