Derr and Gruenewald
Verified against CSLB on · View on CSLB
License details
- License number
- 1043748
- Classifications
- License term on file
- August 29, 2018 – August 31, 2026
Business
- (303) 287 3456 (CSLB public record)
- P O BOX 219, Henderson, CO 80640
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Frequently asked questions
Is Derr and Gruenewald licensed in California?
Yes. Derr and Gruenewald holds an active California state contractor license (CSLB #1043748), verified against the CSLB public record on June 17, 2026.
What is Derr and Gruenewald's CSLB license number?
Derr and Gruenewald's California contractor license number is 1043748. Look that number up with the CSLB "Check a License" tool to confirm its current status against the public record yourself.
What kind of work is Derr and Gruenewald licensed for?
Derr and Gruenewald is classified under Structural Steel (C-51) by the CSLB.
How do I verify Derr and Gruenewald's license myself?
Look up license #1043748 with the CSLB "Check a License" tool and compare the status, bond, and workers' compensation details against what's shown on this page. This page reflects the CSLB public record as of June 17, 2026.
Verify it yourself: How to verify a California contractor license · Look up #1043748 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.