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TRUSTED BY BRENTWOOD, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon890
    Verified electrical services reviews

Top-Rated Electricians in Brentwood - Updated Nov 2026

Avatar for Hamilton Electric
Hamilton Electric
4.9(
74
)
Ceiling Fan - InstallCeiling Fan - RepairElectric Vehicle Charging Station Installation - For Business - Materials Not Provided+12 more

Serving Brentwood, CA and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

Hamilton Electric is a trusted electrical contractor serving residential, commercial, and industrial clients across the Bay and surrounding areas With over 15 years of experience, our licensed electricians specialize in electrical repairs, installations, panel upgrades, lighting solutions, EV charger installations, and energy-efficient retrofits. Whether you're building a new home or upgrading an office, we deliver reliable, code-compliant service on time and on budget. We proudly serve Oakley Ca and surrounding areas and are known for our commitment to safety, transparency, and customer satisfaction. \n

Charge controller
Charge controller
Charge controller
Charge controller
Charge controller

+40

Recommended by22%of homeowners
Avatar for Mister Sparky
Mister Sparky
4.8(
13
)
Electrical Switches, Outlets & Fixtures - Install or RepairElectric Vehicle Charging Station Installation - Materials Not ProvidedElectric Vehicle Charging Station Installation - Materials Provided by Consumer+3 more

Serving Brentwood, CA and surrounding areas

Approved

Free estimates

Warranties offered

Small jobs welcome

At Mister Sparky®, we know how much you depend on electricity to power your daily life. Luckily, we’re experts when it comes to safeguarding against its inherent dangers and are ready to do the reliable work needed to ensure your home’s electrical systems work for years to come. \n \nOur highly trained, licensed electricians are professional troubleshooters who hunt potential hazards and fix them before they cause serious damage. We show up on time, guaranteed, and deliver 100% satisfaction guaranteed with every service call. And because we’re locally operated, our electricians are familiar with the challenges you might face.

23 neighbors recently requested a quote
Avatar for M3 Electrical, Inc.
M3 Electrical, Inc.
4.8(
26
)
Electrical Switches, Outlets & Fixtures - Install or RepairCeiling Fan - InstallCeiling Fan - Repair+6 more

Serving Brentwood, CA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I am an Electrical Engineer by education and trade, working for several high-tech firms in Silicon Valley over a 45-year career, so I've never felt the need to call an electrician. But I know my limits and repairing an electrical open circuit routed in underground conduit is one of them. After trouble shooting the issue, I knew there was a break in the line so I called Mike at M3 electrical. He put me on his schedule, showed up on that date (even a little early) and in less than two hours had the issue fixed. Not only that, but he advised the type of 2-wire Romex that had failed was not the proper wire for an underground application. He pulled about 75 feet of the proper wire through the conduit and even installed a junction box at my street light for a clean installation. Costly you think? Not in my opinion! If I ever need electrical work done in the future, Mike is the guy I will call. I suggest you do as well. Mark S. A very happy customer"
LED lights and fan installed
LED lighting and fan layout
Response time2 days
4 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Dr. Wattz Electric
Dr. Wattz Electric
4.5(
24
)
Ceiling Fan - InstallCeiling Fan - RepairElectrical Switches, Outlets & Fixtures - Install or Repair+1 more

Serving Brentwood, CA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"Robert did an excellent job installing LED ceiling lights in our family room. I couldn't be happier with the finished work. The installation was very neat and professional. I would not hesitate to call Robert again for any future work. I will be referring Robert to anyone that may need some electrical work."
Ceiling Fan & Track Lighting
Standard Ceiling Fan
Chandelier Over Kitchen Table
Exhaust Fan
Surface Mount Fixture

+16

Response time10 hrs
Recommended by100%of homeowners
Avatar for LIMON ELECTRIC & CONSTRUCTION
LIMON ELECTRIC & CONSTRUCTION
4.6(
213
)
Electrical Switches, Outlets & Fixtures - Install or Repair

Serving Brentwood, CA and surrounding areas

Approved

Super Service Award Winner

In business since 1996

Free estimates

Emergency services offered

"Juan and his crew were hired to swap out my main panel and sub panel. They were super professional and go above and beyond to ensure customer satisfaction. They were always punctual, straight forward with their costs and super easy to get along with. Overall great value and I would highly recommend them. Theyâ ll be my go to electrical contract from now on!"
celing fan on concreat
TV wall mount, and recessed lighting installation
Flat screen tv & ressesed
The Old Alameda wells Fargo Bank
The Bank Vault

+20

Response time11 hrs
3 neighbors recently requested a quote
Recommended by94%of homeowners
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Showing 1-10 of 415
Electrical FAQs, answered by experts

Multiple wire sizes are used for residential electrical purposes. While the most common sizes used in homes are 14 and 12 gauge, some appliances, such as stoves, electric water heaters, central air units, etc., may use larger gauge wire to accommodate their larger amperage. Typically, larger appliances require 10-, 8-, or 6-gauge wires.

When combined with a substantial solar system, if you have enough Powerwalls, you could go off-grid and be energy independent. But remember, you'd need enough Powerwalls to power your whole home continuously because a single Powerwall can’t power large appliances for extended periods. One Powerwall is able to power an average-sized home's emergency circuits, lights, and outlets. To power large appliances, you likely need two or three Powerwalls.

There is no blanket figure for a residential home’s electrical load, since load varies by the size of the home, how many appliances are used, and the efficiency of their electrical systems. Typically, however, it’s safe to assume 40 to 60 amps is the average electrical load of a residential home. 

A pigtail is the only safe way to connect an electrical device to more than one circuit wire. Connecting multiple wires to a single screw terminal is extremely dangerous and must never be done. Many electricians will opt for pigtails even when there are multiple screw terminals available so that the device in question won’t halt the flow of downstream current when a problem arises. 

Wiring a light switch wrong can cause a fire if the incorrect wiring causes arcing, meaning the current jumps uncontrolled from one conductor to another. Loose wires or worn wires that are not repaired or replaced can cause arcing. If you’re not 100% sure you can do the job safely, don’t attempt to wire a light switch on your own.

The Brentwood, CA homeowners’ guide to electrical services

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