Robert J Williamson
California licence 1155376 · Sole Owner
17 El Cajon, Lafayette, CA 94549
CLEAR
617 days to renewal
Classifications
Bond and insurance
- Contractor bond
- $25,000
- American Contractors Indemnity Company · #101066374
- Workers' compensation
- Exempt
Licence timeline
- Issued
- May 18, 2026
- Expires
- May 31, 2028
- Registry updated
- May 19, 2026
Contra Costa County · estimating tools for California steel work