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Find Electrical wiring or panel upgrade pros in Danville

Avatar for OSJ Electric

OSJ Electric

5.00(
2
)
Approved Pro

OSJ Electric

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

With over 20 years of experience in the electrical industry, OSJ ELECTRIC is your industry expert in Contra Costa County. We pride ourselves on our extreme professionalism, attention to detail, and high quality work. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family and locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"Very friendly and knowledgeable."

Karen C on November 2022

With over 20 years of experience in the electrical industry, OSJ ELECTRIC is your industry expert in Contra Costa County. We pride ourselves on our extreme professionalism, attention to detail, and high quality work. Our customer satisfaction guarantee will assure you we will not leave your property until you are completely satisfied with our work. As a family and locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today we look forward to working with you!

"Very friendly and knowledgeable."

Karen C on November 2022


Avatar for VeeBuild, Inc.

VeeBuild, Inc.

5.00(
39
)
Approved Pro

VeeBuild, Inc.

5.00(
39
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
3 years of experience

- As an electrical engineer who is experiencing thousands Electrical panel upgrading and EV charger projects, my proficient skill is solutions to maximize utilities on your projects. - As an electrical contractor (C#10) who acquired general building license (B), we are legally to cover your drywall and keep your home clean. - Being a licensed, Tech Clean California, EVITP approved, surety bonded & insured contractor, we assure to make clients satisfied and set their mind at rest on our services!

"Terry was very professional and a pleasure to work with. He communicated very well with what needed to be done and was very prompt in getting the work done or answering any questions we had. I wouldn't hesitate to use him again as needed in the future. "

Mike M on March 2025

- As an electrical engineer who is experiencing thousands Electrical panel upgrading and EV charger projects, my proficient skill is solutions to maximize utilities on your projects. - As an electrical contractor (C#10) who acquired general building license (B), we are legally to cover your drywall and keep your home clean. - Being a licensed, Tech Clean California, EVITP approved, surety bonded & insured contractor, we assure to make clients satisfied and set their mind at rest on our services!

"Terry was very professional and a pleasure to work with. He communicated very well with what needed to be done and was very prompt in getting the work done or answering any questions we had. I wouldn't hesitate to use him again as needed in the future. "

Mike M on March 2025


Avatar for Atomic Telecomm & Electrical Inc.

Atomic Telecomm & Electrical Inc.

4.94(
8
)
Approved Pro

Atomic Telecomm & Electrical Inc.

4.94(
8
)
Approved Pro
Customers say: Quick response
36 years of experience
Free onsite estimate

We can take on a wide range of residential projects to include computer network or wiring, telephone, security system installs and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"Job was tough due to small working space. They persisted and got the work done! Appreciated the extra help with cleanup and arranging the dryer for maximum efficiency."

Sheree L on November 2024

We can take on a wide range of residential projects to include computer network or wiring, telephone, security system installs and a variety of other projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"Job was tough due to small working space. They persisted and got the work done! Appreciated the extra help with cleanup and arranging the dryer for maximum efficiency."

Sheree L on November 2024


ED'S ELECTRIC

5.00(
1
)
Approved Pro

ED'S ELECTRIC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
26 years of experience

ED'S ELECTRIC is currently serving Sacramento and the surrounding areas. For a job well done with your residential services, please give us a call today. All estimates are free for perspective customers.

"Eduardo was very professional and helpful! Will definitely call him again when I have another project in mind."

Debbie M on January 2023

ED'S ELECTRIC is currently serving Sacramento and the surrounding areas. For a job well done with your residential services, please give us a call today. All estimates are free for perspective customers.

"Eduardo was very professional and helpful! Will definitely call him again when I have another project in mind."

Debbie M on January 2023


JLL Electric Company

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

JLL Electric Company

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
5 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!


Avatar for Five-O-Electric

Five-O-Electric

4.50(
2
)
Approved Pro

Five-O-Electric

4.50(
2
)
Approved Pro
43 years of experience

Here at Five-O-Electric, we have over 40 years of experience and we take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from the start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Give Five-O-Electric a call today, we look forward to working with you!

"Very happy w service n customer service. "

Sonia G on November 2025

Here at Five-O-Electric, we have over 40 years of experience and we take great pride in our expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from the start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Give Five-O-Electric a call today, we look forward to working with you!

"Very happy w service n customer service. "

Sonia G on November 2025


James Gilbert Company

5.00(
1
)
Approved Pro

James Gilbert Company

5.00(
1
)
Approved Pro
16 years of experience
Free onsite estimate

James Gilbert Company has proudly served the Bay Area since 2010, specializing in commercial and industrial services while also supporting residential needs. We deliver customized solutions with quick estimates, competitive pricing, and exceptional attention to detail. Our reputation is built on reliability, integrity, and a commitment to customer satisfaction. As a screened and approved Angi professional, you can trust us for safe, high-quality work every time. From panel upgrades to a wide range of electrical improvements, we bring expertise you can depend on. Call us today and let’s get started!

"James Gilbert Co; the attention and service was prompt, Adam and David were super awesome, professional to the most superlative of the word. Recommended to the MAX! "

Eugenio N on October 2025

James Gilbert Company has proudly served the Bay Area since 2010, specializing in commercial and industrial services while also supporting residential needs. We deliver customized solutions with quick estimates, competitive pricing, and exceptional attention to detail. Our reputation is built on reliability, integrity, and a commitment to customer satisfaction. As a screened and approved Angi professional, you can trust us for safe, high-quality work every time. From panel upgrades to a wide range of electrical improvements, we bring expertise you can depend on. Call us today and let’s get started!

"James Gilbert Co; the attention and service was prompt, Adam and David were super awesome, professional to the most superlative of the word. Recommended to the MAX! "

Eugenio N on October 2025


Avatar for Dalcon Electric

Dalcon Electric

4.56(
406
)
Approved Pro

Dalcon Electric

4.56(
406
)
Approved Pro
Customers say: Quality work
236 local quotes requested
33 years of experience

We are an Electrical Contracting Company providing top quality electrical services to South Bay, East Bay, and the Peninsula! David Lee, the owner of Dalcon Electric, started doing electrical work in the San Jose area over 30 years ago. Then, in 1993, he started Dalcon Electric in San Jose. With over 30 years of experience in both residential and commercial work, we take pride in our expertise and professionalism. We always give you a fair price and can often recommend ways to save you money on your electrical job. We are family owned and operated company! We are also licensed, bonded, and insured! Give us a call today! You’ll be in good hands! Ask about our Angie's List coupon and senior discounts. Award winning. Certified Copalum Installers. SPAN Certified Installers.

"Clear and knowledgeable on what my request"

Howard Y on September 2025

We are an Electrical Contracting Company providing top quality electrical services to South Bay, East Bay, and the Peninsula! David Lee, the owner of Dalcon Electric, started doing electrical work in the San Jose area over 30 years ago. Then, in 1993, he started Dalcon Electric in San Jose. With over 30 years of experience in both residential and commercial work, we take pride in our expertise and professionalism. We always give you a fair price and can often recommend ways to save you money on your electrical job. We are family owned and operated company! We are also licensed, bonded, and insured! Give us a call today! You’ll be in good hands! Ask about our Angie's List coupon and senior discounts. Award winning. Certified Copalum Installers. SPAN Certified Installers.

"Clear and knowledgeable on what my request"

Howard Y on September 2025


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


Avatar for Line Load Electric

Line Load Electric

5.00(
15
)
Approved Pro

Line Load Electric

5.00(
15
)
Approved Pro
1 years of experience
Free onsite estimate

We are committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients. We guarantee your satisfaction!

"He did perfect professionally complete the job on time. I am very impressed and pleased from his performance."

Rakesh D on December 2025

We are committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients. We guarantee your satisfaction!

"He did perfect professionally complete the job on time. I am very impressed and pleased from his performance."

Rakesh D on December 2025

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FAQs for electrical wiring or panel upgrade projects in Danville, 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 Danville, 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.