License, bond, and insurance
What Trusted Contractor checked for Cornerstone Concrete LLC, and when.
Washington State Department of Labor & Industries
CORNERSTONE CONCRETE LLC
WA license CORNECL787DU
- License
- active, expires May 13, 2028
Concrete - Bond
- on file with Western Surety Co, $15,000, until canceled
- Insurance
- on file with Contractors Bonding & Insuranc, $1,000,000, expires Jan 6, 2027
Last checked Nov 4, 2026, 5:21 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 Cornerstone Concrete LLC's reviews
Confirm it yourself: official Washington L&I lookup · the public dataset
Recent checks
- Oct 24, 2026, 3:50 PM PacificNo change
- Oct 22, 2026, 2:00 PM PacificNo change
- Oct 20, 2026, 4:49 AM PacificNo change