License, bond, and insurance
What Trusted Contractor checked for Mainstream Mechanical Corp, and when.
Washington State Department of Labor & Industries
MAINSTREAM MECHANICAL CORP
WA license MAINSM*945JF
- License
- active, expires Apr 24, 2028
Heating/Vent/Air-Conditioning And Refrig (Hvac/R) - Bond
- on file with Lexon Ins Co, $15,000, until canceled
- Insurance
- on file with Farmers Ins Exchange, $2,000,000, expires Apr 10, 2027
Last checked Nov 4, 2026, 5:22 AM Pacific against Washington L&I public data (General (m8qx-ubtq), Bond (bzff-4fmt), Insurance (ciwg-agsx)). We read every Washington and Oregon license from state data each day, and again when this page opens more than 12 hours after the last check. The state itself can take a few days to post changes. Check again now
See Mainstream Mechanical Corp's reviews
Confirm it yourself: official Washington L&I lookup · the public dataset
Other licenses this business holds
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Washington L&I license MAINSMC943K2 · Electrical Contractor
active, expires May 22, 2028 · bond on file · insurance none on file · checked Nov 4, 2026, 5:20 AM Pacific · full record
Recent checks
- Oct 24, 2026, 7:52 AM PacificNo change
- Oct 22, 2026, 3:36 PM PacificNo change
- Oct 22, 2026, 9:13 AM PacificNo change