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September 2026 Building Permits

Official permit data from Seattle — updated Mon, Wed & Fri from the county permitting office.

Seattle, WA issued 4,003 building permits in September 2026, down 3% from the prior month. The most active zip code was 98115 with 344 permits. Electrical was the top permit type, making up 53% of all permits issued.

Permits issued
4,003
vs. prior month
-3%
4,115 last month
Most active zip
98115
344 permits
Top permit type
Electrical
53% of total

Permit activity by zip code

Top 10 zip codes by permit volume — September 2026

98115
344
98117
270
98103
261
98118
194
98105
181
98125
180
98112
163
98101
162
98109
156
98199
150

Permits by type

September 2026 · Seattle, WA

Electrical
2138 (53%)
Trade — Single-Family/Duplex Furnace
576 (14%)
Trade — Refrigeration
472 (12%)
Building — Addition/Alteration
292 (7%)
Building — New
106 (3%)
Trade — Mechanical
83 (2%)
Trade — Conveyance
78 (2%)
Trade — Fire Sprinkler and Suppression
65 (2%)
Roof
44 (1%)
Trade — Boiler/Pressure Vessel
43 (1%)
Trade — Sign, Awning and Canopy
39 (1%)
Demolition — Demolition
27 (1%)
Demolition
16 (0%)
Building — Tenant Improvment
13 (0%)
Grading
4 (0%)
Building — Temporary
3 (0%)
Trade — Billboard
2 (0%)
Building — Change of Use Only - No Construction
1 (0%)
Demolition — Relocation
1 (0%)

Other months — Seattle

November 2026October 2026August 2026
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