Kopiecki William
Verified against CSLB on · View on CSLB
License details
- License number
- 497310
- Classifications
- License term on file
- August 26, 1986 – July 31, 2027
Business
- (208) 610 1083 (CSLB public record)
- 267 POSADA DEL SOL, Novato, CA 94949Marin County
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Frequently asked questions
Is Kopiecki William licensed in California?
Yes. Kopiecki William holds an active California state contractor license (CSLB #497310), verified against the CSLB public record on June 17, 2026.
What is Kopiecki William's CSLB license number?
Kopiecki William's California contractor license number is 497310. 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 Kopiecki William licensed for?
Kopiecki William is classified under General Building (B) by the CSLB.
How do I verify Kopiecki William's license myself?
Look up license #497310 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 #497310 on CSLB
See an error in this record? Report incorrect information. Status reflects CSLB data as of the date shown above.