Free Mercer Island Building Permit Lookup — Recent Permits & Contractors
You can look up recent building permits and the contractors on them for Mercer Island, WA free below. 138 building permits were filed in Mercer Island in the last 30 days. The most recent permits and the most active contractors are shown free, no signup — phone numbers, the full contractor list, property-owner contacts, and CSV export are available with a PermitGrab account.
Most active permit types (last 30 days): Electrical (73), HVAC (36), Plumbing (21).
Most recent permits in Mercer Island
| Date | Address | Permit type | Contractor |
|---|---|---|---|
| 2026-06-29 | 3911 Greenbrier Ln | Plumbing | Fast Water Heater Company |
| 2026-06-29 | 4832 E Mercer Way | Mechanical | Art Gas Piping Llc |
| 2026-06-27 | 6114 90th Ave Se | Mechanical | Washington Energy Svcs Co Llc |
| 2026-06-27 | 6114 90th Ave Se | Plumbing | Washington Energy Svcs Co Llc |
| 2026-06-27 | 6114 90th Ave Se | Electrical | Washington Energy Svcs Co Llc |
| 2026-06-26 | 3208 89th Pl Se | Electrical | Washington Energy Svcs Co Llc |
| 2026-06-26 | 6034 Se 22nd St | Electrical | Adt Llc |
| 2026-06-26 | 6518 Se 28th St | Electrical | Kemly Electric Inc |
| 2026-06-26 | 6610 E Mercer Way | Electrical | Automated Equipment Co Inc |
| 2026-06-25 | 2242 72nd Ave Se | Mechanical | Better Air Nw Heating/clng Llc |
Showing the 10 most recent. The full Mercer Island feed updates daily.
Most active Mercer Island contractors (by permit count)
- Greenwood Heating &home Srvs — 25 permits (Electrical)
- Potelco Inc — 23 permits (HVAC)
- Gene Johnsn Plb Htg Cl Elc Llc — 19 permits (Electrical)
- Infrasource Services Llc — 13 permits (HVAC)
- Seatown Electric Htg &airllc — 13 permits (Electrical)
- Hd Partners Llc — 11 permits (Plumbing)
- North Lake Electric Llc — 9 permits (Electrical)
- Fast Water Heater Company — 8 permits (Plumbing)
- South West Plmbg &water Htrs — 7 permits (Electrical)
- Washington Energy Svcs Co Llc — 7 permits (Electrical)
Names shown free. Verified phone numbers and the full contractor list are available with a PermitGrab account.
Unlock phone numbers + the full Mercer Island contractor list
Free here: recent permits and the top contractor names. With a PermitGrab account you also get verified phone numbers, every active contractor (not just the top 10), property-owner contacts, CSV export, and a daily email alert for new Mercer Island permits. Flat $149/mo · 14-day trial · never resold.
Start your free 14-day trial →See the full Mercer Island feed on the Mercer Island permits page, or learn the method in how to get contractor leads from building permits.