Hearthstone Building & Restoration
California licence 319036 · Corporation
Also known as Griswold Mechanical Corporation
712 Bancroft Rd #522, Walnut Creek, CA 94598
CLEAR
100 days to renewal
Classifications
Bond and insurance
- Contractor bond
- $25,000
- American Contractors Indemnity Company · #100720768
- Workers' compensation
- State Compensation Insurance Fund
- Expires October 16, 2026
Licence timeline
- Issued
- May 5, 1976
- Expires
- December 31, 2026
- Registry updated
- September 18, 2025
Contra Costa County · estimating tools for California steel work