Updated: May 02, 2026
Location and Projects
Address
4043 Avon St, Riverside, CA, 92509
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Diamond Grading Site Work Contractor
Diamond Grading Inc, 4043 Avon St, Riverside, CA (Employees: Pedro Barreto and Samuel Moreno) holds a Earthwork And Paving license according to the California license board.
Their BuildZoom score of 97 ranks in the top 18% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Diamond Grading Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Diamond Grading Inc Contact Information
Phone Number: (951) 200-5060
Address: 4043 Avon St, Riverside, CA 92509
This is a sample of this contractor's permits. Click here to access their complete permit history.
To perform rough grading for new construction property at 5070 bridle pl rancho cucamonga ca 91737
Valuation:
N/A
Permit #:
PGR2025-00020
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Need to access temp water meter at 5044 bridle pl for grading work at 5070 bridle pl
Valuation:
N/A
Permit #:
ROW2025-00287
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tr 31796 rough grading
Valuation:
N/A
Permit #:
E1803-022
Status:
issued
Fee:
$259
Permit Type:
Rough grade
Building Type:
N/A
Tr 24147-1 rough grading
Valuation:
N/A
Permit #:
E1803-021
Status:
issued
Fee:
$305
Permit Type:
Rough grade
Building Type:
N/A
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Diamond Grading Inc License info
Verified License
| License # | 877432 |
| Status | Active |
| State | California |
| Type | Earthwork And Paving |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Diamond Grading Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
97
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Benchmark Insurance Company |
Diamond Grading Inc Employees
PB
Pedro Barreto
Rmo / Ceo / Pres
SM
Samuel Moreno
Officer