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Top-Rated Electrical wiring or panel upgrade pros in Signal Hill - Updated Nov 2026

Avatar for ElectricREY INC
ElectricREY INC
5.0(
14
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Electric Ray did an exceptional job installing my EV charger and upgrading the electrical work in my panel. Extremely honest, professional, punctual, and clean throughout the entire process. The installation looks great and everything works perfectly. I highly recommend Electric Ray for any electrical or EV charger installation needs."
Gallery
$200 amp panel upgrade
$200 amp panel upgrade
Ev charger installation
Ev charger installation

+1

16 neighbors recently requested a quote
Carlos Cortez
4.8(
59
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

In business since 2003

Free estimates

Customers say: Quick response

"Carlos has done serval job for me. He did an amazing panel upgrade and installed Recessed lights in our living room. Recently he mounted our new tv on the wall and running all the wires in the wall. Also he added a new outlet behind the tv. He does such great work that we recommend him to our family. Carlos is now our family electrician. We can t say enough great things about him. Hire him today."
Panel upgrade
panel upgrade
panel upgrade
panel upgrade
panel upgrade

+3

Response time6 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Joe Electric
Joe Electric
4.5(
96
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Joe's Electric returned my care within minutes of me contacting them. I had a technician in my home in 1.5 hrs. Who quickly identified and fixed the problem within 35-45 minutes. They saved me from losing a whole day of work and it was worth the cost vs loss I would have incurred."
Response time2 days
15 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Excellence Electric, Inc.
Excellence Electric, Inc.
4.8(
303
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Excellence Electric is just that: excellent on every level. They did a panel upgrade and install of a level 2 electric car charger. The company is family owned (father and son). They did a tremendous job at a very good price. Their attention to detail and workmanship was remarkable. They had to run conduit up the back of my house. They matched the paint at Home Depot that perfectly blended with our house color. Such personable, honest people. Ray jr. told me as he was walking from the job: any problems, or concerns, we’ll take care of it no questions asked. I could not more highly recommend!"
9 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Mattiace Electric
Mattiace Electric
5.0(
69
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"amazing! so much electrical knowledge and was able to do everything i needed in a quick timely manor! ive used him several times and will continue to do so."
Electrical Project
Emporia Home monitoring electrical system
50 amp outdoor  EV charger
400 pound chandelier install
Electrical Project

+38

Response time7 hrs
1 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Casaroja Electric Inc
Casaroja Electric Inc
5.0(
19
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

"I got a few estimates to get more power out to my studio. Everyone quoted me about 4K to upgrade my panel and get dedicated line out to my studion. These guys were to only ones that looked for a better/more economical solution. I sent a pic of my panel and he remembered that I upgraded my kitchen a while back but noticed that my electric stove had it's own dedicated line. He asked me, did you convert to gas when you remodeled? I said yes and he said, great, we take the line that was dedicated to the stove and we use that. It saved me $1500 and it worked perfectly. I would absolutely hire again!"
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade
Panel upgrade

+1

Avatar for Wolf Pack Electric Inc
Wolf Pack Electric Inc
5.0(
13
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Meticulously troubleshot why a ceiling light and ceiling fan were not working in a 1916 house. Upgraded electrical panel from the 1990’s. Was here a few minutes before the time slot for the City of Orange inspector - passed inspection easily. Precise, organized work."
200 amp panel upgrade
200 amp panel upgrade
Response time3 hrs
Avatar for CONVERSION ELECTRIC
CONVERSION ELECTRIC
5.0(
12
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"Conversion electrical was spot on. I had a residential that turned into commercial, and without hesitation, they were able to make the transformation. Take care of all the commercial electrical and had no problems with inspections or Inspector you can not go wrong with conversion Electrical."
Response time1 day
3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for ZERO ELECTRIC
ZERO ELECTRIC
4.9(
17
)
Electrical Wiring or Panel Upgrade

Serving Signal Hill, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

6 neighbors recently requested a quote
Recommended by41%of homeowners
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Showing 1-10 of 496
FAQs for electrical wiring or panel upgrade projects in Signal Hill, CA

Yes, a licensed electrician is essential for this project. Running an electrical service from the road to your house involves connecting to utility power lines, complying with national and local electrical codes, and safely handling high-voltage systems. 

Licensed professionals understand proper wire sizing, grounding requirements, and voltage drop calculations needed for safe installation. Most jurisdictions require permits and inspections that only certified professionals can obtain. The safety risks and potential for property damage make this project inappropriate for DIY attempts.

Overhead installations are less expensive than underground options. For a 1000-foot run, overhead service costs between $8,000 and $15,000, while underground service ranges from $10,000 to $25,000. 

Overhead lines require less labor and fewer materials since they don't need trenching or conduit. However, underground lines offer better protection from weather events and aesthetic benefits. Your decision should balance your budget constraints with long-term reliability and visual preferences.

You might need to upgrade your electrical panel depending on your power requirements. If your existing panel cannot handle the additional load from the extended service, upgrading to a 200-amp service (costing $750 to $2,000) may be necessary. 

A licensed electrician can evaluate your current system and determine if an upgrade is required. Factors include what you'll be powering at the end of the line, existing electrical demand, and whether voltage drop over the distance will affect performance.

Running electric service from the road to a house requires electrical permits from your local building department, costing between $500 and $2,000 depending on your location. You may also need excavation permits for trenching work if installing an underground service. Your utility company will have its own application process for connecting to its grid. A licensed electrical contractor can handle all the necessary permit applications as part of their service, ensuring your installation meets all local code requirements.

The Signal Hill, CA homeowners’ guide to electrical wiring or panel upgrades

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