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Permit Activity Report · August 03, 2026
Mercer Island, WA
516 permits filed in the last 90 days · data updated 2026-07-31
516
Permits · 90 Days
29
Permits · This Week
181
Active Contractors
0
Code Violations
Top Trades by Permit Volume
Electrical
438
HVAC
271
Plumbing
210
General Construction
172
Fire Protection
65
Most Active Contractors
1
POTELCO INC
HVAC · 4 permits/30d
32
permits
Verifying…
2
GREENWOOD HEATING &HOME SRVS
Electrical · 5 permits/30d
30
permits
Verifying…
3
GENE JOHNSN PLB HTG CL ELC LLC
Electrical · 3 permits/30d
23
permits
Verifying…
4
WASHINGTON ENERGY SVCS CO LLC
Electrical · 9 permits/30d
22
permits
Verifying…
5
NORTH LAKE ELECTRIC LLC
Electrical · 5 permits/30d
19
permits
Verifying…
6
INFRASOURCE SERVICES LLC
Plumbing · 5 permits/30d
19
permits
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7
SEATOWN ELECTRIC HTG &AIRLLC
Electrical · 4 permits/30d
17
permits
Verifying…
8
FAST WATER HEATER COMPANY
Plumbing · 3 permits/30d
13
permits
Verifying…
9
ADT LLC
Electrical · 1 permits/30d
9
permits
Verifying…
10
EB#5 LLC, None
Plumbing
8
permits
Verifying…