Updated: Jun 17, 2026
Location and Projects
Address
13980 MARSH CREEK RD, Clayton, CA, 94517
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Prostone Stone and Tile Contractor
Prostone, 13980 Marsh Creek Rd, Clayton, CA (Employee: Catalin Vasile Gavrila) holds a Tile (Ceramic And Mosaic) license and 1 other license according to the California license board.
Their BuildZoom score of 83 does not rank in the top 50% of California contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Prostone, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Prostone Services
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Prostone Contact Information
Phone Number: (925) 594-1660
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Address: 13980 MARSH CREEK RD, Clayton, CA 94517
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This is a sample of this contractor's permits. Click here to access their complete permit history.
Master bathroom remodel
Valuation:
N/A
Permit #:
B1111-026
Status:
final
Fee:
$1,783
Permit Type:
Alter-sfd
Building Type:
N/A
Master bathroom remodel
Valuation:
N/A
Permit #:
E1111-016
Status:
final
Fee:
$102
Permit Type:
Alter-sfd
Building Type:
N/A
Master bathroom remodel
Valuation:
N/A
Permit #:
P1111-010
Status:
final
Fee:
$102
Permit Type:
Alter-sfd
Building Type:
N/A
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Verified License
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Prostone License info
Verified License
| License # | 1040939 |
| Status | Active |
| State | California |
| Type | Tile (Ceramic And Mosaic) |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Prostone at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 968314 |
| Status | Inactive |
| State | California |
| Type | Tile (Ceramic And Mosaic) |
| Business Type | Sole Ownership |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Prostone at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
83
BuildZoom Score
Bonded
| Bonded Agent | Hudson Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
Prostone Employees
CG
Catalin Vasile Gavrila
Sole Owner