MAINSTREAM AIR
Construction Contractor license MAINSA*044PT issued by the Washington State Department of Labor & Industries. Status shown as of August 18, 2026.
This license is active but expires soon. It is valid through August 30, 2026, which is 12 days from today. If your project runs past that date, ask whether the renewal has been filed.
| License holder | MAINSTREAM AIR |
|---|---|
| Business name | MAINSTREAM AIR |
| License type | CONSTRUCTION CONTRACTOR |
| License number | MAINSA*044PT |
| Status today | Expiring soon |
| Expiration date | August 30, 2026 |
| City | Enumclaw |
| County of record | Enumclaw |
| Phone on file | 3603321019 |
| Classifications | CONSTRUCTION CONTRACTOR |
| Issuing authority | Washington State Department of Labor & Industries |
| First seen in public file | August 17, 2026 |
| Last confirmed | August 17, 2026 |
How to confirm this yourself
This page reproduces the L&I public license file, which the agency republishes daily. Before you hire anyone, confirm the record at the source and ask the contractor for proof of insurance separately, since licensing and insurance are not the same thing and the state file does not cover insurance.
Verify at L&I → File a complaint
There are 543 licensed construction contractors on record in Enumclaw County. Compare them all →