Johnston Sign Company Inc
Verified against CSLB on · View on CSLB
License details
- License number
- 609593
- Classifications
- License term on file
- January 16, 1991 – October 31, 2026
Business
- (707) 829 7332 (CSLB public record)
- 1310 COMMERCE ST UNIT M, Petaluma, CA 94954Sonoma County
Are you Johnston Sign Company Inc? Claim this listing to manage it.
Claim this listingRequest a free quote
Tell us about your project and we'll connect you with licensed, verified California contractors.
Other Sign contractors in Petaluma
Browse all Sign contractors in PetalumaWhat to check next
Frequently asked questions
Is Johnston Sign Company Inc licensed in California?
Yes. Johnston Sign Company Inc holds an active California state contractor license (CSLB #609593), verified against the CSLB public record on June 17, 2026.
What is Johnston Sign Company Inc's CSLB license number?
Johnston Sign Company Inc's California contractor license number is 609593. 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 Johnston Sign Company Inc licensed for?
Johnston Sign Company Inc is classified under Sign (C-45) by the CSLB.
How do I verify Johnston Sign Company Inc's license myself?
Look up license #609593 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 #609593 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.