Free Mercer Island, WA Building Permit Lookup — Recent Permits & Contractors
You can look up recent building permits in Mercer Island, WA free below. 139 building permits were filed in Mercer Island in the last 30 days. Recent records and contractor names published by the source are shown free; available contact, owner, and export fields vary by market.
Most active permit types (last 30 days): Electrical (74), HVAC (30), Plumbing (19).
Most recent permits in Mercer Island
| Date | Address | Permit type | Contractor |
|---|---|---|---|
| 2026-09-18 | 4816 88th Ave Se | Mechanical | Home Comfort Alliance Llc |
| 2026-09-18 | 5061 84th Ave Se | Sidesewer | Homeservice Plumbers Llc |
| 2026-09-18 | 6631 E Mercer Way | Electrical | Washington Generators Llc |
| 2026-09-18 | 6631 E Mercer Way | Mechanical | Washington Generators Llc |
| 2026-09-18 | 8307 Se 41st St | Building | Valentine Roofing Llc |
| 2026-09-18 | 4816 88th Ave Se | Electrical | Home Comfort Alliance Llc |
| 2026-09-18 | 2811 75th Pl Se | Mechanical | Infrasource Services Llc |
| 2026-09-18 | 6147 92nd Ave Se | Mechanical | Washington Energy Svcs Co Llc |
| 2026-09-18 | 6147 92nd Ave Se | Electrical | Washington Energy Svcs Co Llc |
| 2026-09-17 | 4266 Shoreclub Dr | Electrical | Renew Electric Llc |
Showing the 10 most recent records. The full Mercer Island feed reflects the source's published update cadence.
Most active Mercer Island contractors (by permit count)
- Potelco Inc — 34 permits (HVAC)
- Greenwood Heating &home Srvs — 31 permits (Electrical)
- Gene Johnsn Plb Htg Cl Elc Llc — 23 permits (Electrical)
- Washington Energy Svcs Co Llc — 22 permits (Electrical)
- Infrasource Services Llc — 20 permits (HVAC)
- North Lake Electric Llc — 19 permits (Electrical)
- Seatown Electric Htg &airllc — 18 permits (Electrical)
- Fast Water Heater Company — 14 permits (Plumbing)
- Adt Llc — 9 permits (Electrical)
- As You Wish Electric — 9 permits (Electrical)
Names shown free where published. Additional records and source-published contact fields are available with a PermitGrab account.
Explore the full Mercer Island record set
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