Design One
Verified against CSLB on · View on CSLB
License details
- License number
- 503509
- Status
- Active
- Classifications
- B · General BuildingC-45 · Sign
- Contractor bond
- $25,000
- Workers' comp
- Exempt
- License term on file
- December 31, 1986 – December 31, 2026
Business
- (562) 809 0448 (CSLB public record)
- 17615 PIONEER BLVD, Artesia, CA 90701Los Angeles County
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Frequently asked questions
Is Design One licensed in California?
Yes. Design One holds an active California state contractor license (CSLB #503509), verified against the CSLB public record on June 17, 2026.
What is Design One's CSLB license number?
Design One's California contractor license number is 503509. You can verify it directly on the CSLB website: https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=503509
What kind of work is Design One licensed for?
Design One is classified under General Building (B) by the CSLB.
How do I verify Design One's license myself?
Look up license #503509 with the CSLB "Check a License" tool at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=503509. 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.