Washington contractor license
MAINSTREAM AIR LTD
- CC-01 General
MAINSTREAM AIR LTD is a CC-01 General contractor in Covington, licensed in Washington for under a year. As of Oct 28, 2026, the license is active with an expiration date of Dec 11, 2027 on record and a license bond is on file.
MAINSTREAM AIR LTDCC-01 General · checked Oct 28, 2026
ActiveLicense number#MAINSAL751RJ
Licensed sinceDec 11, 2025
Years licensedUnder 1 year
Expiration on recordDec 11, 2027
City and countyCovington
License bondOn file
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Source: Washington State Department of Labor & Industries (L&I) contractor records. Last updated Oct 28, 2026. Page refreshed Nov 4, 2026.