Free King County, WA Building Permit Lookup — Recent Permits & Contractors
You can look up recent building permits in King County, WA free below. 1,470 building permits were filed in King County 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): Plumbing (714), General Construction (443), HVAC (162).
Most recent permits in King County
| Date | Address | Permit type | Contractor |
|---|---|---|---|
| 2026-09-20 | 6836 34th Ave Ne Seattle Wa 98115 | 03b. Plumbing (By Contractor) - Multi-Fa | Emerald City Plumbing & Sewer Llc |
| 2026-09-20 | 7310 45th Ave S Seattle Wa 98118 | 02b. Plumbing (By Contractor) - Single F | Rey's Plumbing & Mechanical Llc |
| 2026-09-20 | 1015 Ne 95th St Seattle Wa 98115 | 41. Backflow Assembly Permit - By Contra | J & S Plumbing & Mechanical Inc |
| 2026-09-20 | 2525 28th Ave W Seattle Wa 98199 | 02b. Plumbing (By Contractor) - Single F | Daley Plumbing Llc |
| 2026-09-20 | 7310 45th Ave S Seattle Wa 98118 | 02b. Plumbing (By Contractor) - Single F | Rey's Plumbing & Mechanical Llc |
| 2026-09-20 | 7310 45th Ave S Seattle Wa 98118 | 02b. Plumbing (By Contractor) - Single F | Rey's Plumbing & Mechanical Llc |
| 2026-09-19 | 23050 Ne 102nd St, Redmond Wa 98053 | Addition-Improvement - Tenant | See Record |
| 2026-09-19 | N/a | Complex - Event 16+ | Em Studio Cafe |
| 2026-09-19 | 16843 Se 134th St Wa 98059 | 01. Plumbing - Installed By Homeowner | David Hanson |
| 2026-09-18 | 10928 26th Ave Sw, Seattle Wa 98146 | Residential Building - Adu | See Record |
Showing the 10 most recent records. The full King County feed reflects the source's published update cadence.
Most active King County contractors (by permit count)
- Fast Water Heater Company — 32 permits (Plumbing)
- Epic Plumbing Llc — 9 permits (Plumbing)
- Greenwood Heating And Ac — 8 permits (HVAC)
- South West Plumbing — 7 permits (HVAC)
- Brennan Heating — 7 permits (HVAC)
- Water Closet Plumbing Llc — 7 permits (General Construction)
- Schulte Plumbing Llc — 7 permits (Plumbing)
- Northwest Plumbing Contrs Inc — 6 permits (Plumbing)
- Certified Booth Operator — 6 permits (General Construction)
- Macdonald-Miller Facility Solutions Llc — 5 permits (Plumbing)
Names shown free where published. Additional records and source-published contact fields are available with a PermitGrab account.
Explore the full King County record set
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