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Find Electrical for home addition or remodel installers in Castro Valley

Avatar for Five or Free Electrical Solutions

Five or Free Electrical Solutions

4.74(
46
)
Approved Pro

Five or Free Electrical Solutions

4.74(
46
)
Approved Pro
Customers say: Quick response
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
31 local quotes requested

Here is how all of your fear and risk of being cheated with your electrical work vanishes with Five Or Free Electrical Solutions: We make 5 Promises up front to you that if we do not keep, your electrical work is done FREE. You pay nothing. Period. What 5 Promises? 1) Your Electrical Work Is Completed To Your Satisfaction 2) Your Home Is Left Neat and Tidy, Just As We Found It 3) Your Estimate Stays As Originally Quoted and Agreed Upon 4) Your Appointment Calls and Emails Are Returned Within A Business Day 5) You're Not Made To Wait For A Late Arrival* *If we arrive late without contacting you about our delay before our scheduled appointment, we will complete your electrical work for FREE! On top of our 5 Promises to you, you get 5 solid electrical guarantees from us that ensure not only that you'll never be left with a shabby, incomplete electrical job, but that we'll back for years all our electrical work and any material we use at no cost to you.

"Extremely professional and very reasonably priced. Their response was fast and efficient."

Ron A on October 2020

Here is how all of your fear and risk of being cheated with your electrical work vanishes with Five Or Free Electrical Solutions: We make 5 Promises up front to you that if we do not keep, your electrical work is done FREE. You pay nothing. Period. What 5 Promises? 1) Your Electrical Work Is Completed To Your Satisfaction 2) Your Home Is Left Neat and Tidy, Just As We Found It 3) Your Estimate Stays As Originally Quoted and Agreed Upon 4) Your Appointment Calls and Emails Are Returned Within A Business Day 5) You're Not Made To Wait For A Late Arrival* *If we arrive late without contacting you about our delay before our scheduled appointment, we will complete your electrical work for FREE! On top of our 5 Promises to you, you get 5 solid electrical guarantees from us that ensure not only that you'll never be left with a shabby, incomplete electrical job, but that we'll back for years all our electrical work and any material we use at no cost to you.

"Extremely professional and very reasonably priced. Their response was fast and efficient."

Ron A on October 2020


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


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!


Aaron Murphy Electric

4.96(
35
)
Approved Pro

Aaron Murphy Electric

4.96(
35
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
18 years of experience

Aaron Murphy Electric, is family owned and operated. Proudly serving the Bay Area since 2008. At Aaron Murphy Electric, we specialize in professional, friendly and courteous electrical services for your home. With Aaron Murphy Electric, no job is too large or too small. Call us today for a free estimate!

"Aaron was great. Very professional and prompt. Handled everything required for the project. "

Marc N on August 2025

Aaron Murphy Electric, is family owned and operated. Proudly serving the Bay Area since 2008. At Aaron Murphy Electric, we specialize in professional, friendly and courteous electrical services for your home. With Aaron Murphy Electric, no job is too large or too small. Call us today for a free estimate!

"Aaron was great. Very professional and prompt. Handled everything required for the project. "

Marc N on August 2025


Avatar for Nextgen Electric

Nextgen Electric

4.90(
5
)
Approved Pro

Nextgen Electric

4.90(
5
)
Approved Pro
Customers say: True professional
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
14 years of experience

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!

"They made it so easy to get a quote and schedule the work. Highly recommend."

Heidi A on July 2024

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!

"They made it so easy to get a quote and schedule the work. Highly recommend."

Heidi A on July 2024


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
Customers say: Quick response
230 local quotes requested
24 years of experience

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 Voltex Power Solutions

Voltex Power Solutions

4.90(
10
)
Approved Pro

Voltex Power Solutions

4.90(
10
)
Approved Pro
2 years of experience
Free onsite estimate

We pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service - Call today!

"I contracted with Hector for two electrical projects. The first was for replacement of our 200 amp electrical panel. One problem I've had with contractors has been frustration at their lack of communication. Hector was always good at answering my calls, returning text messages, and keeping me informed. He did his work professionally for a reasonable price, so I hired him again to wire our shed. Again, he did the work professionally and kept me informed of his schedule. One area for improvement would be for him to pay more attention to what the customer says. Some work in our shed had been previously started with Romex installed through the studs. I told him this would need to be replaced with conduit per code. He again started installing Romex. He said he thought we would be installing sheet rock and it would cost more to change to conduit. But after I pointed out I had included flexible conduit in the written scope of work, he made the change with no additional cost or complaint."

Mark C on January 2026

We pride ourselves on our professionalism, as well as our ability to complete every job to the homeowner's total satisfaction. We never leave a job unfinished, or a homeowner not 100% satisfied with our level of service - Call today!

"I contracted with Hector for two electrical projects. The first was for replacement of our 200 amp electrical panel. One problem I've had with contractors has been frustration at their lack of communication. Hector was always good at answering my calls, returning text messages, and keeping me informed. He did his work professionally for a reasonable price, so I hired him again to wire our shed. Again, he did the work professionally and kept me informed of his schedule. One area for improvement would be for him to pay more attention to what the customer says. Some work in our shed had been previously started with Romex installed through the studs. I told him this would need to be replaced with conduit per code. He again started installing Romex. He said he thought we would be installing sheet rock and it would cost more to change to conduit. But after I pointed out I had included flexible conduit in the written scope of work, he made the change with no additional cost or complaint."

Mark C on January 2026


Avatar for Dalcon, Inc.

Dalcon, Inc.

4.77(
77
)
Approved Pro

Dalcon, Inc.

4.77(
77
)
Approved Pro
Super Service Award
Customers say: True professional
43 local quotes requested
47 years of experience

Finding a licensed electrician that you can trust to service or repair your property can be difficult. While some electricians offer free consultations or other specials, they often do not have the skills or expertise necessary to efficiently perform the service you need. At Dalcon Electric, we have over 40 years of experience providing high-quality electrical services for our neighbors in San Jose and the surrounding areas. We are definitely able to take care of any electrical issues you run into big, or small!

"Work went well. Mods were well planned and made without complications. "

Patrick A on July 2025

Finding a licensed electrician that you can trust to service or repair your property can be difficult. While some electricians offer free consultations or other specials, they often do not have the skills or expertise necessary to efficiently perform the service you need. At Dalcon Electric, we have over 40 years of experience providing high-quality electrical services for our neighbors in San Jose and the surrounding areas. We are definitely able to take care of any electrical issues you run into big, or small!

"Work went well. Mods were well planned and made without complications. "

Patrick A on July 2025


Avatar for Dalcon Electric

Dalcon Electric

4.80(
358
)
Approved Pro

Dalcon Electric

4.80(
358
)
Approved Pro
Customers say: Quick response
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
95 local quotes requested

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.

"My complaint is that I scheduled an appointment and they cancelled and then I rescheduled and they cancelled again."

Russ M on January 2026

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.

"My complaint is that I scheduled an appointment and they cancelled and then I rescheduled and they cancelled again."

Russ M on January 2026


Avatar for T E K Electrical Contractor

T E K Electrical Contractor

5.00(
4
)
Approved Pro

T E K Electrical Contractor

5.00(
4
)
Approved Pro
5 years of experience
Free onsite estimate

We work extremely hard for the owner and always have the owner's best interest at heart. Our long term vision is for us to become a go to general contractor with capabilities to do multiple types of projects.

"He did great job. Would hire again if need project. "

Nancy Miles J on November 2025

We work extremely hard for the owner and always have the owner's best interest at heart. Our long term vision is for us to become a go to general contractor with capabilities to do multiple types of projects.

"He did great job. Would hire again if need project. "

Nancy Miles J on November 2025

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FAQs for electrical for home addition or remodel installation projects in Castro Valley, CA

There are several telltale signs that your home is due for an electrical upgrade. You may need to rewire your house if your lights are constantly flickering or your circuit breaker keeps tripping. If you feel mild electric shocks when you touch light switches, hear buzzing sounds, or notice burning smells, you may need to rewire your house, too. Discolored or burnt-looking switches and faceplates are another crucial warning sign. 

Properly installed copper wiring in a residential property can last as long as 50 to 100 years in some cases, but many homes over 30 years old are due for an upgrade. That’s the timeline that many experts recommend, even if it is only a partial update to accommodate technological advancements, increased power demands, and changing safety requirements. 

At $3 to $5 per square foot, the cost to wire a 2,000-square-foot house ranges from $6,000 to $10,000, on average. This can depend on many factors, like the age and complexity of the house and how easy it is for contractors to access the areas they need to get the job done. Opening and repairing walls can further add to your total cost. 

The Castro Valley, 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.