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Top-Rated Electrical for home addition or remodel installers in Ontario - Updated Nov 2026

Avatar for Garafano Electric, Inc.
Garafano Electric, Inc.
4.8(
188
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 1968

Free estimates

Warranties offered

"As usual with Garafano Electric, everything went fine -- way more than fine, actually. We have used them for years on various upgrades to our 1920's mediterranean home. William, the owner, is great about explaining our options and always finds the best and most efficient way to work within the confines of an older two-story duplex on a sloped lot that has serious access issues. Pricing is fair, they have never failed to show up on the appointed day, and on time, and complete the job as agreed. They have never disappointed for over 20 years, and I recommend them without hesitation!"
Response time1 day
Response rate100%
Recommended by98%of homeowners
Avatar for JK Flores Enterprise LLC.
JK Flores Enterprise LLC.
4.9(
61
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"JK Flores LLC sent Jorge and an associate to install a Big Ass fan and to service another Big Ass fan that had been giving us trouble for over a year (others had tried to fix it before). Jorge was on time and sensitive and attentive to our thoughts and concerns. He was quick at his work but was clean and never gave us any concern that he would sacrifice speed over quality of his work. We are already looking for other electrical issues in our house for Jorge to attend. We would highly recommend him to anyone needing electrical help."
Existing ceiling fan
UPS system ready for a power outage
e.v. charger
New ceiling fan in living room
backup power supply

+29

Response time8 hrs
Response rate100%
20 neighbors recently requested a quote
Avatar for CJ's Electrical Company,  Inc.
CJ's Electrical Company, Inc.
4.8(
61
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 2000

Free estimates

Warranties offered

"Carlos arrived at our home with his mask on, diagnosed the issue and repaired it within an hour... I would highly recommend this company for electrical needs... he was very professional upon his arrival, explained step by step what he found and what the repair required... I appreciate the honestly of the company and will recommend them to my family and friends.."
Response time1 day
4 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for JVEC, INC.
JVEC, INC.
4.9(
259
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 1974

Free estimates

Warranties offered

"Contacted JVEC for an evaluation of work issues related to a kitchen remodeling contractor. The evaluation and review were timely, thorough, and provided me the tools to discuss the shortcomings and necessary corrections with the kitchen contractor. As a result of the help provided by JVEC, the corrections were made at little additional cost. I would highly recommend JVEC and they will be my first call for any future electrical work."
Response time2 days
8 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for J L P ELECTRICAL SERVICES
J L P ELECTRICAL SERVICES
4.9(
48
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 2001

Emergency services offered

Warranties offered

"JLP Electrical Services, Wallace was wonderful. He added multiple power outlets in my garage, during our remodel. He also recommended and installed the perfect mini split, for my garage. The experience was very nice. He was professional and timely. His work is top knotch. He’s multi talented. I found his consultation, regarding my thoughts and ideas, to be very helpful. I highly recommend JLP Electrical Services."
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2
3
4
5

+3

Response time1 day
Response rate98%
23 neighbors recently requested a quote
Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
17
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Credit card accepted

"Highly Recommended! We have hired Zero Electric to do several jobs at our apartment complex including installing a generator, EV chargers, new panel, and even installing recessed lighting in the units. They handled all aspects of the projects and had top notch communication throughout. The team has always been quick and professional. We will continue using Zero Electric for our electrical needs."
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+1

6 neighbors recently requested a quote
Recommended by41%of homeowners
Avatar for BIG 2 SMALL ELECTRIC
BIG 2 SMALL ELECTRIC
5.0(
35
)
Electrical for Home Addition or Remodel - Install

Serving Ontario, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"I am currently building my ADU and Big 2 Small Electric installed everything from wall outlets, light switches, ceiling lights, fans, outdoor lights, electric panels, solar panels, etc.! Service was top-notch. Juan knew everything thats needs to be done for my project to finish. I will definitely get his services again for my next projects."
Response time3 days
Recommended by100%of homeowners
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Showing 1-10 of 421
FAQs for electrical for home addition or remodel installation projects in Ontario, CA

Because installing coax outlets involves working around existing electrical wiring and confirming proper grounding, many homeowners prefer to hire a licensed electrician. A professional completes the work safely, secures the line behind the wall, and ensures the installation meets local code, which reduces the risk of damage or future repairs.

You still need a coaxial outlet for most cable-based internet services. The modem draws its signal from a cable line that terminates at a dedicated wall jack. Once the modem is online, your Wi-Fi router can broadcast the signal throughout the home, so the outlet’s location doesn’t affect wireless performance. If an existing jack is damaged or in an inconvenient spot, an electrician can move it or install a new one to maintain a strong, reliable connection.

Coaxial cable loses signal strength the farther it runs. A 50-foot length introduces noticeable loss, and a 100-foot stretch can drop the signal by roughly 30%. A weaker signal can result in a fuzzy picture or slower internet speeds. To maintain high performance, limit cable length whenever possible, select the correct cable grade, and route it efficiently. If your layout demands an exceptionally long run, an electrician can install an inline amplifier to boost the signal and maintain picture or data quality.

The Ontario, CA homeowners’ guide to electrical for home addition or remodel installations

From average costs to expert advice, get all the answers you need to get your job done.