Updated: Jul 13, 2026
Location and Projects
Address
1707 S Grove Ave, Ontario, CA, 91761
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Trinity Building Construction
Trinity Building Inc, 1707 S Grove Ave, Ontario, CA (Employee: Douglas Gregory Smith) holds a General Building license and 1 other license according to the California license board.
Their BuildZoom score of 94 ranks in the top 24% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Trinity Building Inc, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Trinity Building Inc Services
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Trinity Building Inc Contact Information
Phone Number: (909) 539-0026
Address: 1707 S Grove Ave, Ontario, CA 91761
This is a sample of this contractor's permits. Click here to access their complete permit history.
No Description Available
Valuation:
$157,528
Permit #:
17-12087/000 000 CADD 00
Status:
issued
Fee:
$2,979
Permit Type:
Commercial add/alt
Building Type:
Non applicable
No Description Available
Valuation:
N/A
Permit #:
18-2519/000 000 DEMO 00
Status:
complete
Fee:
$101
Permit Type:
Residential demolish
Building Type:
R-3
Framing/rough carpentry
Valuation:
$0
Permit #:
BRPC190371
Status:
renewal due
Fee:
$0
Permit Type:
N/A
Building Type:
N/A
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Verified License
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Trinity Building Inc License info
Verified License
| License # | 1030427 |
| Status | Active |
| State | California |
| Type | General Building |
| Business Type | Corporation |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Trinity Building Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | NAT-83054-2 |
| Status | Inactive |
| Nation | Environmental Protection Agency |
| Type | Renovation |
| Business Type | Corporation |
- According to the United States Environmental Protection Agency, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Trinity Building Inc at the United States Environmental Protection Agency.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Bonded
| Bonded Agent | Wesco Insurance Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Accredited Surety & Casualty Company Inc |
Trinity Building Inc Employees
DS
Douglas Gregory Smith
Rmo / Ceo / Pres