Updated: Jun 16, 2026
Location and Projects
Address
2415 CASTLE ROCK RD, Diamond Bar, CA, 91765
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Nielsen Electric
Nielsen Electric, 2415 Castle Rock Rd, Diamond Bar, CA (Employees: Glen Webb Nielsen, Jeffrey Allen Nielsen, and Jens Nielsen) holds a Electrical license and 4 other licenses according to the California license board.
Their BuildZoom score of 100 ranks in the top 13% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Nielsen Electric, we recommend double-checking their license status with the license board and using our bidding system to get competitive quotes.
Nielsen Electric Contact Information
Phone Number: (949) 310-4851
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Address: 2415 CASTLE ROCK RD, Diamond Bar, CA 91765
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Nielsen Electric Diamond Bar
Quality
100
87th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Nielsen Electric has a BuildZoom score of 100, which places them above 87% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
|
3 projects
|
2024 |
|
2 projects
|
2023 |
Our building permit records indicate that Nielsen Electric has worked on at least
6.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
6 projects
|
Electrical projects |
Analyzing permits over the last 4 years shows that Nielsen Electric mostly works on
electrical project
projects.
Pricing
|
2 projects
|
$5k-$20k |
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
This is a sample of this contractor's permits. Click here to access their complete permit history.
Service panel upgrade 200 amp
Valuation:
N/A
Permit #:
BLD-24-00391
Status:
complete
Fee:
$158
Permit Type:
N/A
Building Type:
N/A
Electrical for 200amp main service
Valuation:
N/A
Permit #:
BLD2025-03035
Status:
final
Fee:
N/A
Permit Type:
Trade only
Building Type:
N/A
Main panel upgrade 100 amps
Valuation:
N/A
Permit #:
E2022-001028
Status:
final
Fee:
$135
Permit Type:
N/A
Building Type:
N/A
Upgrade main electrical panel to 200amps
Valuation:
N/A
Permit #:
207702
Status:
complete
Fee:
$234
Permit Type:
N/A
Building Type:
N/A
Install 6.5kw solar power system. 20 modules 20 inverters
Valuation:
N/A
Permit #:
BLD-2022-00954
Status:
final
Fee:
$536
Permit Type:
N/A
Building Type:
N/A
Install new 200 amp main electrical panel
Valuation:
N/A
Permit #:
BLD-2022-00955
Status:
final
Fee:
$109
Permit Type:
N/A
Building Type:
N/A
200 amp service panel upgrade
Valuation:
N/A
Permit #:
BLD-2022-01612
Status:
final
Fee:
$141
Permit Type:
N/A
Building Type:
N/A
Service panel
Valuation:
N/A
Permit #:
B23-2075
Status:
issued
Fee:
$191
Permit Type:
Residence
Building Type:
N/A
For office work including demolition of interior partition walls, hvac, and electrical light fixtures. new interior partition walls, light fixtures, hvac, and plumbing fixtures at an existing office.
Valuation:
$601,930
Permit #:
1279634
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt Tenant Im...
For plumbing work associated with demolition of interior partition walls, hvac, and electrical light fixtures. new interior partition walls, light fixtures, hvac, and plumbing fixtures
Valuation:
$0
Permit #:
1279639
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt Tenant Im...
For electrical work associated with demolition of interior partition walls, hvac, and electrical light fixtures. new interior partition walls, light fixtures, hvac, and plumbing fixtures
Valuation:
$0
Permit #:
1279637
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt Tenant Im...
For mechanical work associated with demolition of interior partition walls, hvac, and electrical light fixtures. new interior partition walls, light fixtures, hvac, and plumbing fixtures
Valuation:
$0
Permit #:
1279638
Status:
Completed
Fee:
N/A
Permit Type:
N/A
Building Type:
Add/Alt Tenant Im...
Electrical to install (1) subpanel , outlets, (1) transformer, (2) disconnects
Valuation:
$0
Permit #:
BLD2015-01890
Status:
Issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Replace main electrical meter 400amp
Valuation:
$7,500
Permit #:
BLDG23-0977
Status:
issued
Fee:
$243
Permit Type:
Simple
Building Type:
N/A
Install (5) light poles in parking lot
Valuation:
N/A
Permit #:
1712070015
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Mpu to 400amp new meter panel
Valuation:
$7,500
Permit #:
BLDG23-0978
Status:
final
Fee:
$243
Permit Type:
Simple
Building Type:
N/A
Building Permit
10945 Arroyo Dr, CA
2015-10-06
100 amp service upgrade. same location
Valuation:
$0
Permit #:
1510060024
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
New 400 amp service and complete rewire of donut shop
Valuation:
N/A
Permit #:
1404290019
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Commercial electrical permit - 200 amp service upgrade
Valuation:
N/A
Permit #:
ELE14-00302
Status:
complete
Fee:
$145
Permit Type:
N/A
Building Type:
N/A
To obtain a final inspectoin for work completed under permit e201311135169 per po
Valuation:
N/A
Permit #:
E201404038643
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
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Nielsen Electric Reviews
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Verified License
BuildZoom confirmed this contractor's license
Nielsen Electric License info
Verified License
| License # | 950973 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of May 2026.
Verify this license's status for Nielsen Electric at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 856459 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Nielsen Electric at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 856459 |
| Status | Inactive |
| City | Oceanside |
| Type | Contractor |
| Business Type | Sole Ownership |
- According to the City of Oceanside, CA, 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 Nielsen Electric at the City of Oceanside, CA.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 638388 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| 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 Nielsen Electric at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 434167 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| 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 Nielsen Electric at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
100
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
43
Permits
- Building permit records show that Nielsen Electric has worked on 43 permitted projects.
Nielsen Electric Employees
GN
Glen Webb Nielsen
Rmo/Ceo/Pres
JN
Jeffrey Allen Nielsen
Sole Owner
JN
Jens Nielsen
Sole Owner
JN
Jens Nielsen
Sole Owner
PN
Patrick Allen Nielsen
Sole Owner