Updated: Apr 10, 2026
Location and Projects
Address
307 Bernal Ave, Livermore, CA, 94551
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Tri-valley Electrical Service, Inc
Tri-valley Electrical Service, Inc, 307 Bernal Ave, Livermore, CA (Owned by: Layne Cory Hamlin) holds a Electrical license and 3 other licenses according to the California license board.
Their BuildZoom score of 118 ranks in the top 1% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Tri-valley Electrical Service, Inc, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Tri-valley Electrical Service, Inc Contact Information
Phone Number: (408) 891-3635
Address: 307 Bernal Ave, Livermore, CA 94551
Tri-valley Electrical Service, Inc Livermore
Quality
118
99th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Tri-valley Electrical Service, Inc has a BuildZoom score of 118, which places them above 99% of 336,931 contractors in California.
Activity
|
23 projects
|
2025 |
|
11 projects
|
2024 |
|
14 projects
|
2023 |
Our building permit records indicate that Tri-valley Electrical Service, Inc has worked on at least
48.0 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
|
38 projects
|
Electrical projects |
Analyzing permits over the last 4 years shows that Tri-valley Electrical Service, Inc mostly works on
electrical project
projects.
Pricing
|
22 projects
|
< $5k |
|
5 projects
|
$5k-$20k |
|
1 project
|
$1mil+ |
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.
Building Permits by Tri-valley Electrical Service, Inc
This is a sample of this contractor's permits. Click here to access their complete permit history.
Online electrical permit: category 4a: installation of fire warning and controlled devices of up to 2, 500 ft². remove & replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel. we will convert the existing p
Valuation:
N/A
Permit #:
E202412188893
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Online electrical permit: category 4a: installation of fire warning and controlled devices of up to 2, 500 ft². remove & replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel
Valuation:
N/A
Permit #:
E202412198908
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
This is a follow-up on bld2022-00062 permit. the city had finaled the work but pg&e is asking to replace the panel again and reduce it to 100 amps. so we need the permit to replace the panel again with 100 amps from the current 200 amps
Valuation:
$1,300,000
Permit #:
BLD2022-00706
Status:
complete
Fee:
$154
Permit Type:
N/A
Building Type:
N/A
Remove and replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel. we will convert existing panel into a junction box
Valuation:
N/A
Permit #:
EW202509199550
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove & replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel
Valuation:
N/A
Permit #:
EW202502284608
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical permit: replace 100 amp sub panels in each of the 5 apartments with like for like.carbon monoxide & smoke alarms required. reference crc sections r315 & r314
Valuation:
$4,000
Permit #:
COM-2513458
Status:
issued
Fee:
$235
Permit Type:
N/A
Building Type:
N/A
Remove and replace one load center the new load center will be installed on the opposite wall back to back to the existing panel. we will convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202302078850
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel. we will convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202409040888
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove & replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel. we will convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202403227526
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace 1 load center. the new load center will be installed on the opposite wall back to back from the existing panel. convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202305231323
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Temporary power - for mechanical rides game concessions food concessions. march 14-23 2025
Valuation:
$500
Permit #:
BL-ELEC-2025-00013
Status:
filed
Fee:
$190
Permit Type:
N/A
Building Type:
N/A
Remove and replace 1 load center. new load center will be installed on the opposite wall back to back to the existing panel. convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202305231324
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove & replace one load center. new load center will be installed on the opposite wall back to back to the existing panel. convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202303069459
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace 1 load center. load center will be installed on the opposite wall back to back to the existing panel. convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202303279960
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove & replace 1 load center. the new load center will be installed on the opposite wall back to back to the existing panel. convert existing panel into a junction box
Valuation:
N/A
Permit #:
EW202404238265
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Upgrade two old existing electrical sub panels in garage. one of the sub panels is in the shared wall between kitchen and garage new panel will be in fur out wall to keep the fire rating for garage wall
Valuation:
$3,775
Permit #:
BIE22-013973
Status:
final
Fee:
$181
Permit Type:
N/A
Building Type:
N/A
Remove existing full electrical sub panel patch fire wall fire caulk wire coming out of wall building furred out wall around new sub panel. no new circuits
Valuation:
$4,200
Permit #:
BIE24-000755
Status:
withdrawn
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Temporary carnival: dates october 11-20 2024 electrical for 2 generators* each has 250 gallon red dye diesel tanks
Valuation:
$500
Permit #:
BL-ELER-2024-00321
Status:
expired
Fee:
$331
Permit Type:
N/A
Building Type:
N/A
Remove and replace one load center. the new load center will be installed on the opposite wall back to back to the existing panel. we will convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202212298055
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove and replace one load center. the new load center will be installed on the opposite wall back to back to the existing panel. we will convert the existing panel into a junction box
Valuation:
N/A
Permit #:
EW202212288033
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Tri-valley Electrical Service, Inc Reviews
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Recent Buildzoom Projects
Verified License
BuildZoom confirmed this contractor's license
Tri-valley Electrical Service, Inc License info
Verified License
| License # | 927766 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Corporation |
- BuildZoom verified this license was active as of April 2026.
Verify this license's status for Tri-valley Electrical Service, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 724874 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Corporation |
- BuildZoom verified this license was active as of March 2026.
Verify this license's status for Tri-valley Electrical Service, 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 # | 608136 |
| Status | Inactive |
| State | California |
| Type | Electrical |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Tri-valley Electrical Service, 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 # | 988082 |
| Status | Inactive |
| State | California |
| Type | Backflow Maintenance Service |
| Business Type | Corporation |
- According to the California Contractors State License Board, the status of this license was at one point cancelled. However, this information may have changed.
Check this license's status for Tri-valley Electrical Service, Inc at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
118
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | An Employee Service Group Holds The Workers Compensation Insurance. |
321
Permits
- Building permit records show that Tri-valley Electrical Service, Inc has worked on 321 permitted projects.
Tri-valley Electrical Service, Inc Employees
LH
Layne Cory Hamlin
Owner
SM
Sandra Marie Mize
Officer
TD
Troy Daniel Donoghue
Owner