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Electrical wiring or panel upgrade pros in Castro Valley

Alrob Building Services
1110 West Mariposa Avenue
5.00(
1
)
Approved Pro
Alrob Building Services
1110 West Mariposa Avenue
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
15 years of experience

Alrob Building Services, is committed to excellence in every aspect of our business. 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. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Absolutely phenomenal service. My first Angie’s Handyman and Danny set the bar very high. Ran into some hiccups due to weird nonstandard preexisting setups and he took everything he encountered on the chin. Danny explained everything he did at every step and proposed creative solutions."

Yanick M on January 2023

Alrob Building Services, is committed to excellence in every aspect of our business. 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. Accurate knowledge of our trade, combined with ability, is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Absolutely phenomenal service. My first Angie’s Handyman and Danny set the bar very high. Ran into some hiccups due to weird nonstandard preexisting setups and he took everything he encountered on the chin. Danny explained everything he did at every step and proposed creative solutions."

Yanick M on January 2023


Island Electric
2066 Alameda Ave
New on HomeAdvisorNew on Angi
Approved Pro
Island Electric
2066 Alameda Ave
New on AngiNew on HomeAdvisor
Approved Pro
9 years of experience

At Island Electic we pride ourselves on being the best Electrical company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

At Island Electic we pride ourselves on being the best Electrical company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!


Avatar for KJ ELECTRIC
KJ ELECTRIC
12 Kara Rd
New on HomeAdvisorNew on Angi
Approved Pro
KJ ELECTRIC
12 Kara Rd
New on AngiNew on HomeAdvisor
Approved Pro
2 years of experience
Free onsite estimate

Detailed efficient dependable With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We work for our customers on their schedule, as to make it as convenient as possible for you! We look forward to working with you!

Detailed efficient dependable With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. We work for our customers on their schedule, as to make it as convenient as possible for you! We look forward to working with you!


Baris Electric LLC
32467 Nancy Ct
New on HomeAdvisorNew on Angi
Approved Pro
Baris Electric LLC
32467 Nancy Ct
New on AngiNew on HomeAdvisor
Approved Pro
18 years of experience
Free onsite estimate

Baris Electric LLC is committed to excellence in every aspect of our business. 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. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business.

Baris Electric LLC is committed to excellence in every aspect of our business. 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. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests, and make their concerns the basis of our business.


Avatar for HOERZ ELECTRIC
HOERZ ELECTRIC
39885 WYATT LN
5.00(
5
)
Approved Pro
HOERZ ELECTRIC
39885 WYATT LN
5.00(
5
)
Approved Pro
Customers say: Quality work
11 years of experience

We take great pride in our experience, 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 the 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.

"You can't go wrong with Hoerz Electric. We recently had them do electrical work in our kitchen remodel. And let me just say, WOW! Chris and Mike were thorough, honest, and did a great job. We are very happy with the work they did, and can't recommend them enough!"

Andrew L on December 2024

We take great pride in our experience, 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 the 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.

"You can't go wrong with Hoerz Electric. We recently had them do electrical work in our kitchen remodel. And let me just say, WOW! Chris and Mike were thorough, honest, and did a great job. We are very happy with the work they did, and can't recommend them enough!"

Andrew L on December 2024


JLL Electric Company
155 Hillside Lane
New on HomeAdvisorNew on Angi
Approved Pro
JLL Electric Company
155 Hillside Lane
New on AngiNew on HomeAdvisor
Approved Pro
4 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!


Mendez Electric
985 Karol Way
4.79(
49
)
Approved Pro
Mendez Electric
985 Karol Way
4.79(
49
)
Approved Pro
Customers say: True professional
Recommended by 95% of Angi customers
Recommended by 95% of HomeAdvisor customers
38 local quotes requested

Welcome to Mendez Electric. We are the premier professional home improvement company in San Leandro, CA. We offer the highest quality and most attentive customer service. We are known to pay exquisite attention to detail while making customer satisfaction our top priority. We are glad to be your number one choice. Please call us today to schedule your appointment!

"On time, diligent, knowledgeable, reasonably priced."

Robert H on December 2024

Welcome to Mendez Electric. We are the premier professional home improvement company in San Leandro, CA. We offer the highest quality and most attentive customer service. We are known to pay exquisite attention to detail while making customer satisfaction our top priority. We are glad to be your number one choice. Please call us today to schedule your appointment!

"On time, diligent, knowledgeable, reasonably priced."

Robert H on December 2024


SHORTBAR INC
1111 BROADWAY FL 3
5.00(
1
)
Approved Pro
SHORTBAR INC
1111 BROADWAY FL 3
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
1 years of experience

We got our start in real estate, fixing restaurant equipment, lighting, and heaters for our business tenants. After four years, we started taking work as an independent general electrical contractor, and today, do a range of commercial and residential work including panel swaps, electric vehicle chargers, rooftop A/C units, etc. for single-family houses up to apartments, hotels, and strip centers. Our friendly and affordable techs are happy to install a new light over your kitchen table, but we also know our way around restaurants, daycares, and factories: three-phase wiring and motors, variable frequency drives, transformers, machine tools, and low-voltage communication and signaling (e.g. Ethernet). Prior to Shortbar, our owner worked nearly two decades developing software in Silicon Valley, and holds a master's degree in electrical engineering from the University of Illinois Urbana-Champaign. There isn't much we can't do--we look forward to serving you at Shortbar.

"Shortbar did a tricky install of a switched connection to an existing J-box in the concrete ceiling of my condo. If youâ ve owned a high-rise concrete place before, you know that can be tricky, but Shortbar figured out how to hook my new light fixture up to an existing 3-way switch and patched the holes where they had to open up the wall."

Caroline S on February 2024

We got our start in real estate, fixing restaurant equipment, lighting, and heaters for our business tenants. After four years, we started taking work as an independent general electrical contractor, and today, do a range of commercial and residential work including panel swaps, electric vehicle chargers, rooftop A/C units, etc. for single-family houses up to apartments, hotels, and strip centers. Our friendly and affordable techs are happy to install a new light over your kitchen table, but we also know our way around restaurants, daycares, and factories: three-phase wiring and motors, variable frequency drives, transformers, machine tools, and low-voltage communication and signaling (e.g. Ethernet). Prior to Shortbar, our owner worked nearly two decades developing software in Silicon Valley, and holds a master's degree in electrical engineering from the University of Illinois Urbana-Champaign. There isn't much we can't do--we look forward to serving you at Shortbar.

"Shortbar did a tricky install of a switched connection to an existing J-box in the concrete ceiling of my condo. If youâ ve owned a high-rise concrete place before, you know that can be tricky, but Shortbar figured out how to hook my new light fixture up to an existing 3-way switch and patched the holes where they had to open up the wall."

Caroline S on February 2024


Avatar for Golden Bay Electric
Golden Bay Electric
111 Poppy Ct
4.91(
27
)
Approved Pro
Golden Bay Electric
111 Poppy Ct
4.91(
27
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
17 local quotes requested

Golden Bay Electric is dedicated to providing our customers with the best quality work and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. 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.

"Job was quoted so quickly and was onsite within 90 minutes. I have rarely received such quick service for a small job. Electrician was courteous, clean and professional. No price gouging with this company, they will now be my go to all my electrical needs going forward. Thanks Golden Bay Electric!"

Steve C on March 2025

Golden Bay Electric is dedicated to providing our customers with the best quality work and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. 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.

"Job was quoted so quickly and was onsite within 90 minutes. I have rarely received such quick service for a small job. Electrician was courteous, clean and professional. No price gouging with this company, they will now be my go to all my electrical needs going forward. Thanks Golden Bay Electric!"

Steve C on March 2025


Avatar for Diversified Building & Electric Company, Inc.
Diversified Building & Electric Company, Inc.
409 Tennant Station, Unit 445
4.88(
4
)
Approved Pro
Diversified Building & Electric Company, Inc.
409 Tennant Station, Unit 445
4.88(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
26 years of experience

Diversified Building & Electric Company, Inc., is locally owned and operated business serving the Bay Area. We have been in business since 1999. Call us for all your electrical and custom cabinetry needs. We do it all and hold a general building license as well. From residential to commercial. We have the capability to design cabinets for any space with you in mind the entire time. We are focused on keeping 'customers for life.’ By providing the highest levels of productivity, exceptional customer service and a quality product, we take pride in knowing our work will represent us for years to come. Call us anytime! Emergencies by appointment only.

"Denis is great to deal with, great personality and work ethic! I will be using Diversified for future projects."

Toni C on September 2019

Diversified Building & Electric Company, Inc., is locally owned and operated business serving the Bay Area. We have been in business since 1999. Call us for all your electrical and custom cabinetry needs. We do it all and hold a general building license as well. From residential to commercial. We have the capability to design cabinets for any space with you in mind the entire time. We are focused on keeping 'customers for life.’ By providing the highest levels of productivity, exceptional customer service and a quality product, we take pride in knowing our work will represent us for years to come. Call us anytime! Emergencies by appointment only.

"Denis is great to deal with, great personality and work ethic! I will be using Diversified for future projects."

Toni C on September 2019

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Electrical wiring or panel upgrades FAQs

Upgrading an electrical panel may not significantly increase your home's value, but it can make your property more appealing to potential buyers. A modern electrical panel enhances safety and meets current electrical demands, offering peace of mind to home buyers. This can make your home easier to sell and potentially lead to higher offers when the time comes.

Upgrading an electrical panel from 100 to 200 amps costs between $750 and $2,000, not including the cost of running new wiring for additional circuits. This upgrade increases your home's electrical capacity, allowing you to safely use more appliances and modern electrical devices without overloading your system. It's a valuable investment for homes with growing electrical needs.

Yes, in most circumstances, you will need a permit to upgrade your panel. Contact your local building department if you’re upgrading the breaker box, moving it, upgrading your amperage service, or adding a new subpanel. If you’re just replacing a light switch, receptacle, or single breaker in the electrical box, you may not need a permit, but it’s always a good idea to check or speak to a professional.

When only the unit is exchanged, replacing an electrical panel takes four to eight hours. When associated wiring and additional components require removal and reinstallation, the process extends to 20 to 30 hours. A professional electrician deploys a dedicated team to remove the old panel, install the new one, and update all wiring with precision, ensuring your system meets current safety codes.

Replacing an electrical panel begins by turning off the power and notifying the utility company. The electrician secures all required parts, disconnects wiring safely, and inspects the system before removing the old panel. Following safe disposal, the new panel is firmly installed, and all wiring is reconnected and updated to current safety codes.

An electrical breaker panel lasts 25 to 40 years when maintained correctly and inspected annually. This proven lifespan guarantees a long-term, safe electrical system. Regular maintenance and prompt professional evaluations preserve the panel’s performance and secure your home’s power supply, ensuring continued safety and system efficiency.

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