Updated: Apr 20, 2026
Location and Projects
Address
3509 MARTIN DR, San Mateo, CA, 94403
Use our bidding system to
request a quote
Alonso Electric
Alonso Electric, 3509 Martin Dr, San Mateo, CA (Owned by: Francisco Alonso) holds a Electrical license according to the California license board.
Their BuildZoom score of 99 ranks in the top 15% of 336,931 California licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Alonso Electric, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Alonso Electric Contact Information
Phone Number: (650) 280-0022
Edit
Address: 3509 MARTIN DR, San Mateo, CA 94403
Edit
Do you work for this business? Unlock this free profile to update company info and see who's viewing your profile.
Alonso Electric San Mateo
Quality
99
85th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Alonso Electric has a BuildZoom score of 99, which places them above 85% of 336,931 contractors in California.
Activity
|
3 projects
|
2025 |
|
1 project
|
2024 |
Our building permit records indicate that Alonso Electric has worked on at least
4.0 projects over the past 2 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
|
4 projects
|
Electrical projects |
Analyzing permits over the last 4 years shows that Alonso Electric mostly works on
electrical project
projects.
Pricing
|
2 projects
|
< $5k |
|
1 project
|
$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.
Electrical plumbing & mechanical - electrical vehicle charging station
2025-06-18
Install new 50 amp ev charging station on exterior wall left wall of garage
Valuation:
$2,500
Permit #:
MEP-2025-298806
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Provide 70a electrical to backyard 120 sf shed and hot tub
Valuation:
N/A
Permit #:
PRE22-00968
Status:
filed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Provide 70a electrical to backyard 120 sf shed and hot tub
Valuation:
N/A
Permit #:
E22-128
Status:
final
Fee:
$210
Permit Type:
N/A
Building Type:
Dwellings
Upgrade service 200a
Valuation:
$7,300
Permit #:
E2025-0146
Status:
final
Fee:
$256
Permit Type:
Service panel
Building Type:
N/A
Service upgrade to 200 amps
Valuation:
$1,200
Permit #:
B24-0590
Status:
final
Fee:
$217
Permit Type:
Alterations
Building Type:
N/A
Temporary power pole
Valuation:
$1,000
Permit #:
MEP-2018-268519
Status:
final
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Install (1) exterior light above book drop
Valuation:
N/A
Permit #:
BLDG2018-0394
Status:
final
Fee:
N/A
Permit Type:
Other
Building Type:
N/A
Upgrade main electrical service to 200a replace sub panel
Valuation:
N/A
Permit #:
MEP2015-00302
Status:
final
Fee:
$303
Permit Type:
(elec) electrical...
Building Type:
N/A
Replace/repair residence main electrical service panel
Valuation:
N/A
Permit #:
MEP2014-00558
Status:
final
Fee:
$152
Permit Type:
(elec) electrical...
Building Type:
N/A
Replace main electric panel w/125 amp new panel
Valuation:
$1,500
Permit #:
BLDG-15-0338
Status:
complete
Fee:
$86
Permit Type:
N/A
Building Type:
N/A
Upgrade main electrical service to 125 amps install diswasher/disposal circuits to kitchen install gfci receptacles in kitchen
Valuation:
N/A
Permit #:
ELE93-0027
Status:
final
Fee:
$49
Permit Type:
N/A
Building Type:
N/A
Install an attic ventilator one bathroom exhaust fan whole house exhaust fan and rewire 10 existing recepticals
Valuation:
N/A
Permit #:
ELE97-0177
Status:
final
Fee:
$84
Permit Type:
N/A
Building Type:
N/A
Working on room additions after 7:oo p.m. would like someone to go out and advise owner of hours for construction causing loud noises
Valuation:
$0
Permit #:
COD2004-14937
Status:
Closed
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Kitchen/dining room remodel 300 sq. ft. sheetrock replace kitchen cabinets and countertops new outlets fl. lights and new sink
Valuation:
N/A
Permit #:
BLD2009-00675
Status:
CLOSED
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Service upgrade- 100 amp install 2 new outlets in bedrooms
Valuation:
$3,200
Permit #:
E14-0017
Status:
issued
Fee:
$157
Permit Type:
Otc permit
Building Type:
N/A
Upgrade main electrical service 200 amp move sub-panel
Valuation:
N/A
Permit #:
B05-0536
Status:
final
Fee:
$60
Permit Type:
Service change
Building Type:
N/A
Additional 200 amp sub panel for computer equipment.
Valuation:
$0
Permit #:
E9903844
Status:
Final
Fee:
$136
Permit Type:
N/A
Building Type:
N/A
Remodel bathroom addition 5000 sq ft jacuzi
Valuation:
N/A
Permit #:
MISC99-0007
Status:
applied
Fee:
$63
Permit Type:
N/A
Building Type:
N/A
Fire repair - replace feeder serving panels.
Valuation:
$0
Permit #:
E9902905
Status:
Expired
Fee:
$106
Permit Type:
N/A
Building Type:
N/A
Scanned. addition to the house without permit
Valuation:
$0
Permit #:
SWN2012-00066
Status:
Permit Finaled
Fee:
N/A
Permit Type:
N/A
Building Type:
N/A
Similar Contractors See more
License # 1038922
Discovery Bay, CA
142
BZ Score
$3.2K
Avg Project
-
Projects
License # 861751
Piedmont, CA
140
BZ Score
$12.3K
Avg Project
-
Projects
143
BZ Score
$22.5K
Avg Project
-
Projects
Alonso Electric Reviews
BuildZoom hasn't received any reviews for Alonso Electric. 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
Alonso Electric License info
Verified License
| License # | 481722 |
| 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 Alonso Electric at the California Contractors State License Board.
This is a sample of licensing data; click here to access a complete history.
99
BuildZoom Score
Bonded
| Bonded Agent | Suretec Indemnity Company |
| Bond Value | $15,000 |
Insured
| Workers Comp Provider | Security National Insurance Company |
36
Permits
- Building permit records show that Alonso Electric has worked on 36 permitted projects.
Alonso Electric Employees
FA
Francisco Alonso
Sole Owner
FA
Francisco Alonso
Owner