Contractor License Proof

Mackay Professional Services

Licensed

Verified against CSLB on · View on CSLB

License details

License number
668331
Status
Active
Classifications
B · General Building
Contractor bond
$25,000
Workers' comp
Exempt
License term on file
March 31, 1993 – March 31, 2027

Business

  • (510) 773 3436 (CSLB public record)
  • P O BOX 11653, Oakland, CA 94611Alameda County

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Frequently asked questions

Is Mackay Professional Services licensed in California?

Yes. Mackay Professional Services holds an active California state contractor license (CSLB #668331), verified against the CSLB public record on June 17, 2026.

What is Mackay Professional Services's CSLB license number?

Mackay Professional Services's California contractor license number is 668331. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=668331

What kind of work is Mackay Professional Services licensed for?

Mackay Professional Services is classified under General Building (B) by the CSLB.

How do I verify Mackay Professional Services's license myself?

Look up license #668331 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=668331. This page reflects the CSLB public record as of June 17, 2026.

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