Union Construction Company
Verified against CSLB on · View on CSLB
License details
- License number
- 399937
- License term on file
- February 18, 1981 – February 28, 2027
Business
- (213) 422 5004 (CSLB public record)
- 21217 WASHINGTON ST37, Walnut, CA 91789Los Angeles County
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What to check next
Frequently asked questions
Is Union Construction Company licensed in California?
Yes. Union Construction Company holds an active California state contractor license (CSLB #399937), verified against the CSLB public record on June 17, 2026.
What is Union Construction Company's CSLB license number?
Union Construction Company's California contractor license number is 399937. 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 Union Construction Company licensed for?
Union Construction Company is classified under General Engineering (A), General Building (B), and Painting and Decorating (C-33) by the CSLB.
How do I verify Union Construction Company's license myself?
Look up license #399937 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 #399937 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.