Monthly permit report

Seattle commercial building permits, May 2025

Biggest projects in May 2025

By declared value.

100 Lakeside Ave S
Issued May 1
$3M
Remove timber pier and pile breakwater and construct gangways pier float and breakwater float at the South Leschi Marina per plan.
commercialBuildingHarkness Construction, Llc
3350 Beach Dr Sw
Issued May 13 · 4 permits
$2.8M
Demolition, procurement, and installation of new electrical switchboards, MV switches, MV Transformers, and Lighting to an existing pump station. We will be installing all new MV…
commercialElectricalTitan Earthwork, Llc
815 E Edgar St
Issued May 20 · 9 permits

In May 2025, Seattle issued 1,474 building permits on commercial and multifamily properties, on 279 projects, declaring $30.4M of work.
The busiest trade was electrical (766 permits), then HVAC/mechanical (245).
The most active contractor was Cochran, with 43 permits.
The largest project was at 100 Lakeside Ave S, with $3M declared.
Half of the month’s permits were issued within 11 days of application.

Source: building permit records from official city open-data portals, checked daily. Data through October 27, 2026. How we count