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Find Electrical wiring or panel upgrade pros in Brentwood

Avatar for Perfect Star Heating and Air Conditioning

Perfect Star Heating and Air Conditioning

4.91(
265
)
Approved Pro

Perfect Star Heating and Air Conditioning

4.91(
265
)
Approved Pro
Super Service Award
Customers say: Quick response
10 years of experience
Free onsite estimate

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"They finished the job quickly and all is well. They were terrific."

Gaylord B on February 2026

With over 30 years of experience, Perfect Star Heating, Cooling, & Electrical is a locally owned and operated family business serving Alameda & Contra Costa County. We service all makes and models, offering top-quality comfort and energy efficiency solutions. Specializing in Furnace/Heating, Air Conditioning, and Ductless Mini-Split installation, we also provide repair and maintenance for Central HVAC systems, Ductwork, Indoor Air Quality, Electrical Repair & Installation, and Solar Installation. Free estimates are available for HVAC system replacement, new installations, and solar solutions. As a Lennox Premier Dealer, Daikin Comfort Pro, and WellAir Elite dealer, we are Diamond Certified, hold an A+ BBB Rating, and have been voted “The Best Heating & Air Company” and “The Most Community-Minded Company” by The Press in Brentwood, CA for two years. We are also SFGATE’s Best of the Bay Area Heating & A/C Service provider.

"They finished the job quickly and all is well. They were terrific."

Gaylord B on February 2026


Avatar for Hamilton Electric

Hamilton Electric

4.97(
56
)
Approved Pro

Hamilton Electric

4.97(
56
)
Approved Pro
Super Service Award
Customers say: True professional
2 years of experience
Free onsite estimate

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. Looking for an affordable electrician near you? Call Hamilton Electric—your local electrical contractor for expert service and competitive pricing.

"His quick response and timely scheduling made the whole process easy. Especially his willingness to explain and teach. Happy to work with him again and highly recommend others do as well. "

Christian L on February 2026

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. Looking for an affordable electrician near you? Call Hamilton Electric—your local electrical contractor for expert service and competitive pricing.

"His quick response and timely scheduling made the whole process easy. Especially his willingness to explain and teach. Happy to work with him again and highly recommend others do as well. "

Christian L on February 2026


Avatar for CA Electrical Group 24/7

CA Electrical Group 24/7

4.84(
50
)
Approved Pro

CA Electrical Group 24/7

4.84(
50
)
Approved Pro
Super Service Award
Customers say: Quick response
24 years of experience
Free onsite estimate

CA ELECTRICAL GROUP 24/7 provides a wide range of electrical services including troubleshooting, electrical panel installs, service upgrades, complete rewiring, electrical safety inspections, new construction, remodeling projects, electric vehicle car charging stations and smart home integration. When you choose to work with CA ELECTRICAL GROUP 24/7, you will not be disappointed. Whether you need a new electrical panel at your home or new wiring at your business, we have a solution. Our team is ready to solve smaller problems before they become more significant issues for your family. We proudly serve customers in the Bay Area CA . Why choose CA Electrical Group 24/7 as your electrical contractor? There are so many reasons why we should be your top choice for an electrical contractor in San Francisco Bay Area. Our expertise and excellence in electrical make us beyond qualified for all kinds of electrical projects. We work for both residential and commercial clients. Our electricians have worked on thousands of electrical projects throughout their careers. At CA Electrical Group, they’ve helped businesses and home owners correct code violations, upgrade their lighting systems, repair their electrical networks, and so much more. Every CA Electrical Group electrician is state-licensed and bonded, and so is our business. We’re also insured in every town we serve. Aside from our years of experience and expert electricians, We also prioritize making services affordable. While other electrical contractors charge you an arm and a lag for simplest services, We make it a point to price our services at an excellent value. Because of this, you can get quality electrical services without compromising on quality!

"I ordered a rewire for most of my house, fix GFCI receptacles in my garage, and update EV charging receptacle. Communication - 4/5 The project manager, Onri, was responsive for the most part and answered any questions I had. Timeliness - 5/5 The crew arrived earlier than I’d expect them. Quality - 5/5 The crew laid down blankets to avoid damaging the floors. They made minimal cuts to gain access to route new wiring. The crew was very professional and seemed like experts. Correctness - 3/5 The crew was not aware I ordered an installation for EV charging, fixing drywall, and fixing the garage GFCI connectors. They had to do two follow up visits to fix the GFCI receptacles. Overall, I had to double check their work. They rewired two bedrooms to the same breaker when they should have been split. The important thing is that they corrected everything that was wrong and was very professional about it. I’d hire them again."

Vincent G on February 2026

CA ELECTRICAL GROUP 24/7 provides a wide range of electrical services including troubleshooting, electrical panel installs, service upgrades, complete rewiring, electrical safety inspections, new construction, remodeling projects, electric vehicle car charging stations and smart home integration. When you choose to work with CA ELECTRICAL GROUP 24/7, you will not be disappointed. Whether you need a new electrical panel at your home or new wiring at your business, we have a solution. Our team is ready to solve smaller problems before they become more significant issues for your family. We proudly serve customers in the Bay Area CA . Why choose CA Electrical Group 24/7 as your electrical contractor? There are so many reasons why we should be your top choice for an electrical contractor in San Francisco Bay Area. Our expertise and excellence in electrical make us beyond qualified for all kinds of electrical projects. We work for both residential and commercial clients. Our electricians have worked on thousands of electrical projects throughout their careers. At CA Electrical Group, they’ve helped businesses and home owners correct code violations, upgrade their lighting systems, repair their electrical networks, and so much more. Every CA Electrical Group electrician is state-licensed and bonded, and so is our business. We’re also insured in every town we serve. Aside from our years of experience and expert electricians, We also prioritize making services affordable. While other electrical contractors charge you an arm and a lag for simplest services, We make it a point to price our services at an excellent value. Because of this, you can get quality electrical services without compromising on quality!

"I ordered a rewire for most of my house, fix GFCI receptacles in my garage, and update EV charging receptacle. Communication - 4/5 The project manager, Onri, was responsive for the most part and answered any questions I had. Timeliness - 5/5 The crew arrived earlier than I’d expect them. Quality - 5/5 The crew laid down blankets to avoid damaging the floors. They made minimal cuts to gain access to route new wiring. The crew was very professional and seemed like experts. Correctness - 3/5 The crew was not aware I ordered an installation for EV charging, fixing drywall, and fixing the garage GFCI connectors. They had to do two follow up visits to fix the GFCI receptacles. Overall, I had to double check their work. They rewired two bedrooms to the same breaker when they should have been split. The important thing is that they corrected everything that was wrong and was very professional about it. I’d hire them again."

Vincent G on February 2026


Avatar for IC Electric

IC Electric

5.00(
16
)
Approved Pro

IC Electric

5.00(
16
)
Approved Pro
Super Service Award
Customers say: Quality work
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
Free onsite estimate

We have the experience and dedication to get the job done right! Specializing in electrical services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"I purchased a small wine cooler from Wayfair and needed installation. Before that could be done, I need electrical to the cabinet where the wine cooler would go. Ivan did the whole job for me and it looks great! I can hardly wait to use it! Ivan and his assistant were diligent and cleaned up the mess that gets made when doing work of this kind. He communicated everything that I needed to know and was very professional. I will definitely use him again."

Dolores L on December 2025

We have the experience and dedication to get the job done right! Specializing in electrical services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your FREE estimate today!

"I purchased a small wine cooler from Wayfair and needed installation. Before that could be done, I need electrical to the cabinet where the wine cooler would go. Ivan did the whole job for me and it looks great! I can hardly wait to use it! Ivan and his assistant were diligent and cleaned up the mess that gets made when doing work of this kind. He communicated everything that I needed to know and was very professional. I will definitely use him again."

Dolores L on December 2025


Avatar for Mr Electric of Concord CA

Mr Electric of Concord CA

4.96(
15
)
Approved Pro

Mr Electric of Concord CA

4.96(
15
)
Approved Pro
Customers say: Quick response
32 years of experience
Free onsite estimate

Established in 1994, Mr. Electric is a global franchise organization providing electrical installation and repair services. Recognized by Entrepreneur magazine among its Franchise 500, Mr. Electric franchisees provide these services to both residential and commercial customers at almost 200 locations worldwide. Mr. Electric is a subsidiary of the Neighborly family of service franchises.

"Just needed a 240V outlet in a laundry room. Mr Electric did just fine."

Jon L on June 2025

Established in 1994, Mr. Electric is a global franchise organization providing electrical installation and repair services. Recognized by Entrepreneur magazine among its Franchise 500, Mr. Electric franchisees provide these services to both residential and commercial customers at almost 200 locations worldwide. Mr. Electric is a subsidiary of the Neighborly family of service franchises.

"Just needed a 240V outlet in a laundry room. Mr Electric did just fine."

Jon L on June 2025


Avatar for Amber Electrical Service

Amber Electrical Service

4.94(
16
)
Approved Pro

Amber Electrical Service

4.94(
16
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

We understand that every business and home has a project and every project has a budget. Our team of professionals works with each client to create a custom solution to fit their needs. We make sure to deliver the right results at the right price. So just when you thought that hiring a professional electrician was "not in the budget," think again! We will work with you to do everything we can to make your vision become a reality! With over 10 years of experience we pride ourselves on offering our customers the highest quality work at the lowest possible price. Our customers are always our priority, we do everything we can to be sure that each project is completed on budget, on time, with 100% customer satisfaction. 925-483-6108 CALL or EMAIL US TODAY fred4net@gmail.com

"Good customer service. The work done was explained in detail."

Carmen H on February 2024

We understand that every business and home has a project and every project has a budget. Our team of professionals works with each client to create a custom solution to fit their needs. We make sure to deliver the right results at the right price. So just when you thought that hiring a professional electrician was "not in the budget," think again! We will work with you to do everything we can to make your vision become a reality! With over 10 years of experience we pride ourselves on offering our customers the highest quality work at the lowest possible price. Our customers are always our priority, we do everything we can to be sure that each project is completed on budget, on time, with 100% customer satisfaction. 925-483-6108 CALL or EMAIL US TODAY fred4net@gmail.com

"Good customer service. The work done was explained in detail."

Carmen H on February 2024


Burkin Electric

5.00(
11
)
Approved Pro

Burkin Electric

5.00(
11
)
Approved Pro
Customers say: Quick response
36 years of experience
Free onsite estimate

*Residential service work. *2 year residential apprenticeship program *4 year commercial and industrial apprenticeship program. *45 years and active member of International Brotherhood of Electrical Workers Union of America. *Sole proprietor 32 years.

"I hired Jim to replace our electrical panel, and he is truly an old-school electrician who went through proper, comprehensive training—you don’t see that much anymore. He did an excellent, high-quality job. I would absolutely give him 10 stars if I could.I "

Sandra N on January 2026

*Residential service work. *2 year residential apprenticeship program *4 year commercial and industrial apprenticeship program. *45 years and active member of International Brotherhood of Electrical Workers Union of America. *Sole proprietor 32 years.

"I hired Jim to replace our electrical panel, and he is truly an old-school electrician who went through proper, comprehensive training—you don’t see that much anymore. He did an excellent, high-quality job. I would absolutely give him 10 stars if I could.I "

Sandra N on January 2026


"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."

Dan F on March 2020

We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers.

"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."

Dan F on March 2020


Smoov Energy & Electric, Inc.

5.00(
8
)
Approved Pro

Smoov Energy & Electric, Inc.

5.00(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

Smoov Energy & Electric Inc is a leader providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

"Arrived same day. Very courteous"

Adam A on March 2023

Smoov Energy & Electric Inc is a leader providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations.

"Arrived same day. Very courteous"

Adam A on March 2023


T-1 Electric, Inc.

4.81(
8
)
Approved Pro

T-1 Electric, Inc.

4.81(
8
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
17 years of experience

With over 10 years of experience in the electrical industry, we are the experts you need to take care of your home or business. We will treat your home as we would treat our own. Give T-1 Electric, Inc. a call today, we look forward to working with you!

"Estimate I was given by a reputable handyman service was twice the amount that Tony actually charged me for the work. There were 3 fixtures and a troublesome GFCI outlet in my project. He took care of the work in about 2 hours (including the time to purchase the needed parts). His work was outstanding!"

Dwane M on March 2018

With over 10 years of experience in the electrical industry, we are the experts you need to take care of your home or business. We will treat your home as we would treat our own. Give T-1 Electric, Inc. a call today, we look forward to working with you!

"Estimate I was given by a reputable handyman service was twice the amount that Tony actually charged me for the work. There were 3 fixtures and a troublesome GFCI outlet in my project. He took care of the work in about 2 hours (including the time to purchase the needed parts). His work was outstanding!"

Dwane M on March 2018

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FAQs for electrical wiring or panel upgrade projects in Brentwood, CA

While homeowners with substantial electrical knowledge might technically attempt a subpanel installation, most local building departments require permits and inspections for this type of work. Professional electricians understand local code requirements, can obtain necessary permits, and ensure the installation meets safety standards. Given the significant safety risks associated with incorrect electrical work, most homeowners benefit from hiring a licensed professional.

A standard subpanel installation takes an average of four to eight hours. This timeframe may extend if you're installing multiple subpanels or adding specialized circuits like those for spa equipment. Factors such as difficult access points, complex wiring paths, or permit processing times can also affect the overall project duration.

Adding a subpanel doesn't directly reduce electricity consumption or lower your utility bills. A subpanel simply redistributes power from your main panel to additional circuits. However, organizing your electrical system more efficiently may help prevent overloaded circuits and the associated problems. For actual cost savings, consider energy-efficient appliances and lighting instead.

The appropriate subpanel size depends on your specific electrical requirements. Consider the number and type of devices you'll be powering, potential future needs, and the capacity of your main electrical panel. An electrician can perform a load calculation to determine the most suitable amperage rating for your situation, ensuring you have adequate power without overpaying for unnecessary capacity.

A main electrical panel connects directly to your utility's power supply and contains your home's primary service disconnect. It distributes electricity throughout your entire house. A subpanel, by contrast, receives power from the main panel and redistributes it to a specific area of your home. Think of the main panel as the primary distribution point and the subpanel as a secondary branch that extends your electrical system's reach.

While electrical upgrades aren't as immediately visible as kitchen or bathroom renovations, they can contribute to your home's functionality and safety. Prospective buyers often appreciate updated electrical systems that can accommodate modern power demands. A properly installed subpanel that provides additional capacity for workshops, home offices, or future expansions could be an attractive feature for certain buyers, though the direct impact on home value varies by market.

The Brentwood, 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.