Updated: Jun 24, 2026
Location and Projects
Address
300 SANTA CLARA WAY, San Mateo, CA, 94403
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JEFF COSTELLO ELECTRIC
JEFF COSTELLO ELECTRIC, 300 Santa Clara Way, San Mateo, CA (Employee: Jeffrey Vincent Costello) holds a Electrical 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 JEFF COSTELLO ELECTRIC, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
JEFF COSTELLO ELECTRIC Contact Information
Phone Number: (650) 255-0040
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Address: 300 SANTA CLARA WAY, San Mateo, CA 94403
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JEFF COSTELLO ELECTRIC San Mateo
Quality
94
76th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
JEFF COSTELLO ELECTRIC has a BuildZoom score of 94, which places them above 76% of 336,931 contractors in California.
Activity
|
1 project
|
2025 |
Our building permit records indicate that JEFF COSTELLO ELECTRIC has worked on at least
1.0 project over the past year.
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.
Pricing
|
1 project
|
< $5k |
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 JEFF COSTELLO ELECTRIC
This is a sample of this contractor's permits. Click here to access their complete permit history.
#scanned# install 240 volt tesla charger located on exterior driveway wall. tesla wall mount charger resubmittal #1 fak 6/27/18- per building comments. 3 sets of load calcs manufacturers specs and single line drawing of wiring method conductor size/type and size of ocpd protecting circuit resubmittal # 2 dwm-8/27/18 three copies of load calcs three copies of sight plans for building c... see more
Valuation:
N/A
Permit #:
BLD2018-00896
Status:
final
Fee:
$365
Permit Type:
N/A
Building Type:
N/A
Emergency replacement electrical work already completed by electrician. pg&e detected frayed/hot cable in electrical box that was about to catch fire. replaced housing and cable that connects to pg&e. no upgrades only emergency replacement
Valuation:
$1,100
Permit #:
MEP-2021-278639
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 2 circuits for dishwasher and garbage disposal 1 switch 2 receptacles
Valuation:
N/A
Permit #:
E201704284629
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 2 circuits for wine cooler and lighting 1 switch 2 receptacles
Valuation:
N/A
Permit #:
E201704284630
Status:
issued
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Unit 415. install 4 recess light fixtures in bedroom
Valuation:
N/A
Permit #:
E201708157009
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install electrical subpanel 3 new dedicated circuits 20 amp 120 volt
Valuation:
N/A
Permit #:
E201609159745
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical service upgrade. install new 200 amp electrical service
Valuation:
$3,000
Permit #:
MEP-2021-281878
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Electrical upgrade to detached rear shed. trench for wiring sub-panel & outlets lighting at (2) new shreds. 120 sf
Valuation:
$3,000
Permit #:
EL-2016-260270
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Addition 2 circuits for dishwasher and garbage disposal 1 switch 2 receptacles
Valuation:
N/A
Permit #:
E201704284629
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Remove (e) knob & tube and rewire w/romex relocate 220 volt dryer outlet bring elecrtical up to code in guest bedroom & laundry room
Valuation:
$0
Permit #:
2007-38969-00 E
Status:
N/A
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Upgrade service 150 amp panel
Valuation:
N/A
Permit #:
12-1046
Status:
final
Fee:
$166
Permit Type:
Electrical servic...
Building Type:
N/A
Addition 2 circuits for wine cooler and lighting 1 switch 2 receptacles
Valuation:
N/A
Permit #:
E201704284630
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
200 amp upgrade & car charger
Valuation:
$3,000
Permit #:
E2015-0015
Status:
final
Fee:
$474
Permit Type:
Electrical
Building Type:
N/A
Addition 569 sf to 1st floor & 669 sf habitable basement; remodel 200 sf on 1st floor (n) 500 sf deck; upgrade service equipment to 200 amps & addition sub panel
Valuation:
N/A
Permit #:
E06-317
Status:
final
Fee:
$490
Permit Type:
N/A
Building Type:
N/A
Upgrade electrical service 125 amp *see notes
Valuation:
N/A
Permit #:
11080136
Status:
final
Fee:
$288
Permit Type:
N/A
Building Type:
N/A
Remove (e) knob & tube and rewire w/romex relocate 220 volt dryer outlet bring elecrtical up to code in guest bedroom & laundry room
Valuation:
N/A
Permit #:
2007-38969-00
Status:
issued
Fee:
$74
Permit Type:
N/A
Building Type:
N/A
7 lights 5 switches 12 receptacles 7 circuits 1 100 amp sub 5 120 volt heaters 1500 watt third floor flat
Valuation:
N/A
Permit #:
E200802115234
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
10 lights 8 switches 16 receptacles 8 circuits - kitchen and bathroom remodel
Valuation:
N/A
Permit #:
E200503214481
Status:
complete
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Service upgrade
Valuation:
$1,800
Permit #:
BLD2007-00713
Status:
final
Fee:
$88
Permit Type:
Repair
Building Type:
N/A
Service upgrade to 200 amp
Valuation:
$2,000
Permit #:
E13-0001
Status:
final
Fee:
$127
Permit Type:
Otc permit
Building Type:
N/A
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JEFF COSTELLO ELECTRIC Reviews
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Verified License
BuildZoom confirmed this contractor's license
JEFF COSTELLO ELECTRIC License info
Verified License
| License # | 849767 |
| Status | Active |
| State | California |
| Type | Electrical |
| Business Type | Sole Ownership |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for JEFF COSTELLO ELECTRIC at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
94
BuildZoom Score
Bonded
| Bonded Agent | American Contractors Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Employers Assurance Company |
18
Permits
- Building permit records show that JEFF COSTELLO ELECTRIC has worked on 18 permitted projects.
JEFF COSTELLO ELECTRIC Employees
JC
Jeffrey Vincent Costello
Sole Owner