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 7112143-CN

5404 20TH AVE S

Construct detached accessory dwelling unit (DADU) accessory to single family residence per standard plan 6794017-SP. Demolish existing detached garage.

Permit

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

Location

City
SEATTLE
State
WA
ZIP
98108

Dates

Applied
2025-10-17
Issued
2025-12-08
Expires
2027-06-08
Time to issue
52 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
Single-Family Add/Alt
Review cycles
3
Days out for corrections
11
Permit class (Seattle detail)
Single Family/Duplex

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

Other permits issued in Seattle, December 2025