Updated: Jun 01, 2026
Location and Projects
Address
10369 BANYAN STREET, Alta Loma, CA, 91737
Use our bidding system to
request a quote
SI Testing Electrician
SI Testing, 10369 Banyan St, Alta Loma, CA (Employees: David Wayne Sincock and Denice Helen Sincock) holds a Electrical license according to the California license board.
Their BuildZoom score of 95 ranks in the top 22% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring SI Testing, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
SI Testing Contact Information
Phone Number: (877) 857-8007
Edit
Address: 10369 BANYAN STREET, Alta Loma, CA 91737
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Replace ground fault relay control wiring
Valuation:
N/A
Permit #:
EL-2023-00326
Status:
final
Fee:
$609
Permit Type:
N/A
Building Type:
N/A
Replace existing backup generator due to age
Valuation:
N/A
Permit #:
19041-10000-08165
Status:
final
Fee:
N/A
Permit Type:
Commercial
Building Type:
N/A
Electrical vehicle chargers (4
Valuation:
$52,398
Permit #:
18-3584/000 000 E 00
Status:
complete
Fee:
$2,569
Permit Type:
Electric vehicle ...
Building Type:
Industrial park
Installation of 9 ev charging stations
Valuation:
N/A
Permit #:
19041-10000-42235
Status:
issued
Fee:
N/A
Permit Type:
Apartment
Building Type:
N/A
No Description Available
Valuation:
$52,398
Permit #:
18-3584/000 000 B 00
Status:
complete
Fee:
$2,569
Permit Type:
Electric vehicle ...
Building Type:
Industrial park
Electrical vehicle chargers (4)
Valuation:
$52,398
Permit #:
2018-3584-E-0-0-0
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical vehicle chargers (4)
Valuation:
$52,398
Permit #:
2018-3584-B-0-0-0
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Change out 2 existing brakers
Valuation:
N/A
Permit #:
BE1826745
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical vehicle chargers (4)
Valuation:
$52,398
Permit #:
2018-3584-B-0-1-0
Status:
expired
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace (e) valdalized 2000a service panel
Valuation:
N/A
Permit #:
B201703216
Status:
expired
Fee:
$148
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
License # 778366
Murrieta, CA
132
BZ Score
$17K
Avg Project
-
Projects
129
BZ Score
$7.5K
Avg Project
-
Projects
License # 997486
Burbank, CA
132
BZ Score
$5.8K
Avg Project
-
Projects
SI Testing Reviews
BuildZoom hasn't received any reviews for SI Testing. Click here to be alerted when reviews are posted about them.
Recent Buildzoom Projects
Let us find you an electrician in your area today
We'll search our vast network of Electricians and connect
you with one that meets your needs today.
Verified License
BuildZoom confirmed this contractor's license
SI Testing License info
Verified License
| License # | 1015372 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Corporation |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for SI Testing at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
95
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | State Compensation Insurance Fund |
6
Permits
- Building permit records show that SI Testing has worked on 6 permitted projects.
SI Testing Employees
DS
David Wayne Sincock
Rmo / Ceo / Pres
DS
Denice Helen Sincock
Officer