Contractor License Proof

Ruben Sierra

Licensed

Verified against CSLB on · View on CSLB

License details

License number
1042879
Status
Active
Classifications
A · General EngineeringB · General BuildingC-12 · Earthwork and Paving
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
August 9, 2018 – August 31, 2026CSLB lists this license as current.

Business

  • (909) 435 5903 (CSLB public record)
  • 1160 SAPPHIRE AVE, Mentone, CA 92359San Bernardino County

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Frequently asked questions

Is Ruben Sierra licensed in California?

Yes. Ruben Sierra holds an active California state contractor license (CSLB #1042879), verified against the CSLB public record on August 4, 2026.

What is Ruben Sierra's CSLB license number?

Ruben Sierra's California contractor license number is 1042879. 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 Ruben Sierra licensed for?

Ruben Sierra is classified under General Engineering (A), General Building (B), and Earthwork and Paving (C-12) by the CSLB.

How do I verify Ruben Sierra's license myself?

Look up license #1042879 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 August 4, 2026.

Verify it yourself: How to verify a California contractor license · Look up #1042879 on CSLB

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See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.