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Find Electrical wiring or panel upgrade pros in Diamond Bar

Avatar for M J Prime Electric Incorporated

M J Prime Electric Incorporated

5.00(
4
)
Approved Pro

M J Prime Electric Incorporated

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 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 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.

"Excellent workmanship and always on time."

Rosemary L on June 2022

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 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.

"Excellent workmanship and always on time."

Rosemary L on June 2022


Avatar for Granny Electric

Granny Electric

4.55(
10
)
Approved Pro

Granny Electric

4.55(
10
)
Approved Pro
Customers say: True professional
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
13 years of experience

Granny Electric 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.

"Keeping this guys card!"

Wendy K on May 2024

Granny Electric 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.

"Keeping this guys card!"

Wendy K on May 2024


S&W Electric Company

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

S&W Electric Company

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

We work extremely hard for the owner and our company strives to take care of all our client's unique needs and always have the owner's best interest at heart. We are very detailed and meticulous in our work.  Our long-term vision is for us to become your go to Contractor with capabilities to do multiple types of projects.  Call us today you'll be relieved you did. Thank you

We work extremely hard for the owner and our company strives to take care of all our client's unique needs and always have the owner's best interest at heart. We are very detailed and meticulous in our work.  Our long-term vision is for us to become your go to Contractor with capabilities to do multiple types of projects.  Call us today you'll be relieved you did. Thank you


Avatar for K H Gillette Electrical & Lighting

K H Gillette Electrical & Lighting

5.00(
5
)
Approved Pro

K H Gillette Electrical & Lighting

5.00(
5
)
Approved Pro
Customers say: Quick response
27 years of experience
Free onsite estimate

we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from 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.

"Kevin responded quickly to my call, came on time, was friendly, neat, explained the job, provided pricing upfront and completed project. I will definitely use KH Gillette Electrical again and would highly recommend."

Gail D on March 2025

we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from 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.

"Kevin responded quickly to my call, came on time, was friendly, neat, explained the job, provided pricing upfront and completed project. I will definitely use KH Gillette Electrical again and would highly recommend."

Gail D on March 2025


Avatar for Mr. Electric of Ontario

Mr. Electric of Ontario

5.00(
10
)
Approved Pro

Mr. Electric of Ontario

5.00(
10
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
38 local quotes requested

Whether you need electrical services for your Riverside County business or home, Mr. Electric of Ontario has the perfect solution. From installation to upgrades, we do it all. Contact Mr. Electric to make your life easier and your pockets fuller. We take pride in serving local businesses and neighbors. Workmanship guaranteed. Prompt reply to your request. Residential and commercial projects welcome. Call us today @ 951-446-0064.

"The person who installed my ev charger really know what he’s doing and did good job. Great customer service."

Jhunne C on March 2024

Whether you need electrical services for your Riverside County business or home, Mr. Electric of Ontario has the perfect solution. From installation to upgrades, we do it all. Contact Mr. Electric to make your life easier and your pockets fuller. We take pride in serving local businesses and neighbors. Workmanship guaranteed. Prompt reply to your request. Residential and commercial projects welcome. Call us today @ 951-446-0064.

"The person who installed my ev charger really know what he’s doing and did good job. Great customer service."

Jhunne C on March 2024


Avatar for Trinity Electric

Trinity Electric

5.00(
2
)
Approved Pro

Trinity Electric

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

TRINITY ELECTRIC is committed to excellence 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

"Highly recommend, honest, great quality, very good at what he does, and great with people."

Steve X on April 2020

TRINITY ELECTRIC is committed to excellence 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

"Highly recommend, honest, great quality, very good at what he does, and great with people."

Steve X on April 2020


Avatar for Orange County Electricians LLC

Orange County Electricians LLC

5.00(
5
)
Approved Pro

Orange County Electricians LLC

5.00(
5
)
Approved Pro
1 years of experience
Emergency services offered

Our licensed and certified electricians are dedicated to providing efficient, safe, and meticulous electrical services that homeowners and businesses trust. Specializing in EV charger installations, electrical panel upgrades, customized lighting, circuit installations, smart home setups, and comprehensive electrical diagnostics, we deliver precision on every project. We prioritize transparency, offering upfront pricing with no surprises, ensuring you always understand the scope, cost, and timeline. Our commitment to superior customer service means clear communication and detailed consultations, empowering you to make informed decisions. Backed by advanced technology and rigorous quality standards, every project is executed to perfection, guaranteeing your peace of mind.

Our licensed and certified electricians are dedicated to providing efficient, safe, and meticulous electrical services that homeowners and businesses trust. Specializing in EV charger installations, electrical panel upgrades, customized lighting, circuit installations, smart home setups, and comprehensive electrical diagnostics, we deliver precision on every project. We prioritize transparency, offering upfront pricing with no surprises, ensuring you always understand the scope, cost, and timeline. Our commitment to superior customer service means clear communication and detailed consultations, empowering you to make informed decisions. Backed by advanced technology and rigorous quality standards, every project is executed to perfection, guaranteeing your peace of mind.


Adaptive Power Company, Inc.

5.00(
1
)
Approved Pro

Adaptive Power Company, Inc.

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

Adaptive Power Company Inc 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.

"They came in, did the job done quickly and what I asked for, supoer friendly, personable, and fantastic work to with."

Nick X on April 2022

Adaptive Power Company Inc 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.

"They came in, did the job done quickly and what I asked for, supoer friendly, personable, and fantastic work to with."

Nick X on April 2022


Avatar for Steve Cavenee Electric  Inc

Steve Cavenee Electric Inc

4.64(
609
)
Approved Pro

Steve Cavenee Electric Inc

4.64(
609
)
Approved Pro
Customers say: Quality work
45 years of experience
Free onsite estimate

Steve Cavenee Electric has proudly served Southern California, including Orange, West Riverside and East Los Angeles counties for over forty years, since 1980; Licensed, Insured, and Bonded under California State License number C10 467884. During that time, we have maintained a small crew of electricians, which has allowed us to deliver the kind of personalized service our customers have come to expect. BBB acredited. We are happy to offer a $10 Senior Citizen discount for customers over 65, as well as a free service panel "Tune-up" for all Angie's List members, (a $75.00 value). You can reach the office at 714-974-7063.

"Great job and great communication"

Nick L on July 2025

Steve Cavenee Electric has proudly served Southern California, including Orange, West Riverside and East Los Angeles counties for over forty years, since 1980; Licensed, Insured, and Bonded under California State License number C10 467884. During that time, we have maintained a small crew of electricians, which has allowed us to deliver the kind of personalized service our customers have come to expect. BBB acredited. We are happy to offer a $10 Senior Citizen discount for customers over 65, as well as a free service panel "Tune-up" for all Angie's List members, (a $75.00 value). You can reach the office at 714-974-7063.

"Great job and great communication"

Nick L on July 2025


Avatar for Ground Up Electric, LLC

Ground Up Electric, LLC

5.00(
2
)
Approved Pro

Ground Up Electric, LLC

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

"Luis, is truly a professional and will manner gentleman. Thank you Luis for making my project smooth and easy and great job sir...I recommend this company...."

William P on December 2023

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 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.

"Luis, is truly a professional and will manner gentleman. Thank you Luis for making my project smooth and easy and great job sir...I recommend this company...."

William P on December 2023

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FAQs for electrical wiring or panel upgrade projects in Diamond Bar, CA

Warning signs that indicate potential service line problems include frequent circuit breaker trips, flickering lights throughout your home, buzzing sounds from your electrical panel, or visible damage to exterior wiring. If your home has an older electrical panel (25+ years) or you notice a burning smell near your electrical connections, contact a licensed electrician promptly to evaluate your system's condition.

Responsibility for electrical service lines is divided between the utility company and the homeowner. The utility maintains everything up to the connection point at your property (often the weatherhead or meter), while you're responsible for the service entrance cables, meter base, and all wiring beyond. Contact your specific utility provider to understand exactly where their responsibility ends and yours begins.

A standard electrical service line replacement takes one to two hours for a straightforward installation. This timeline may extend if complications arise or additional electrical work is performed simultaneously. The process includes disconnecting power, removing old wiring, installing new components, and restoring service. Allow additional time for scheduling inspections and obtaining necessary permits.

Most standard homeowners' insurance policies don't cover electrical service line replacement due to normal aging or gradual deterioration. However, damage caused by covered perils like lightning strikes, fires, or fallen trees may qualify for insurance coverage. Some insurance companies offer specific service line coverage as an optional add-on to standard policies. Review your policy details or consult with your insurance agent to understand your specific coverage options.

The Diamond Bar, 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.