Contractor License Proof

Kollias Construction Company

Licensed

Verified against CSLB on · View on CSLB

License details

License number
425152
Status
Active
Classifications
A · General EngineeringB · General Building
Contractor bond
$25,000
Workers' comp
ExemptNo employees — not a red flag.
License term on file
July 9, 1982 – July 31, 2026

Business

  • (510) 410 5937 (CSLB public record)
  • 4566 KIMBERLY COMMON, Livermore, CA 94550Alameda County

Are you Kollias Construction Company? Claim this listing to manage it.

Claim this listing

Request a free quote

Tell us about your project and we'll connect you with licensed, verified California contractors.

By submitting, you agree we may share your request with relevant licensed contractors to help with your project. See our Privacy Policy.

Other General Engineering contractors in Livermore

On Site General Engineering Inc

A · Livermore, CA

Licensed

Verified June 17, 2026 · Bonded

Fito Plumbers Inc

A · Livermore, CA

Licensed

Verified June 17, 2026 · Bonded

Trinity Perfect Construction Inc

A · Livermore, CA

Licensed

Verified June 17, 2026 · Bonded

Gibson Development and Construction

A · Livermore, CA

Licensed

Verified June 17, 2026 · Bonded

T K K LLC

A · Livermore, CA

Licensed

Verified June 17, 2026 · Bonded

Randhawa Ravi

A · Livermore, CA

Licensed

Verified June 17, 2026 · Bonded

Browse all General Engineering contractors in Livermore

What to check next

How to verify a California contractor licenseRed flags when hiring a contractorLicensed vs. bonded vs. insured — what's the difference?Risks of hiring an unlicensed contractor

Frequently asked questions

Is Kollias Construction Company licensed in California?

Yes. Kollias Construction Company holds an active California state contractor license (CSLB #425152), verified against the CSLB public record on June 17, 2026.

What is Kollias Construction Company's CSLB license number?

Kollias Construction Company's California contractor license number is 425152. 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 Kollias Construction Company licensed for?

Kollias Construction Company is classified under General Engineering (A) and General Building (B) by the CSLB.

How do I verify Kollias Construction Company's license myself?

Look up license #425152 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 #425152 on CSLB

Checking more than one contractor? Verify another license.Verify a license

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