Mason Plumbing Inc
Verified against CSLB on · View on CSLB
License details
- License number
- 817803
- Classifications
- License term on file
- March 5, 2003 – April 30, 2027
Business
- (415) 456 4554 (CSLB public record)
- P O BOX 2874, San Anselmo, CA 94979Marin County
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What to check next
Frequently asked questions
Is Mason Plumbing Inc licensed in California?
Yes. Mason Plumbing Inc holds an active California state contractor license (CSLB #817803), verified against the CSLB public record on June 17, 2026.
What is Mason Plumbing Inc's CSLB license number?
Mason Plumbing Inc's California contractor license number is 817803. 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 Mason Plumbing Inc licensed for?
Mason Plumbing Inc is classified under Plumbing (C-36) by the CSLB.
How do I verify Mason Plumbing Inc's license myself?
Look up license #817803 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 #817803 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.