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Chasov Electrical, Voice & Data

Electrical Contractor, Lighting - Low Voltage Halogen & Lighting
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Marin  San Francisco Counties
Diamond Certified Company Report
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Chasov Electrical, Voice & Data
312 SURVEYS
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  • Rating
17 CONSECUTIVE YEARS
SINCE JANUARY 2009
CERT 1486

Diamond Certified Ratings Dashboard

312

Verified Customers

Surveyed

Customer Loyalty

Customer Satisfaction

Helpful Expertise

READ ALL 312 SURVEY RESPONSES

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Company Report Menu

  • Survey Responses
  • Diamond Certified Video Player
  • Researched Articles & Profile
  • Capabilities
  • Photos
  • Website & External Feeds

Diamond Certified Company Report SUMMARY UPDATE April 2025

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Chasov Electrical, Voice & Data

Rated Highest in Quality and Helpful Expertise for 17 Consecutive Years.

Quick Summary

  • Diamond Certified since 2009
  • Provides electrical services for residential and light commercial clients in San Francisco and the Greater Bay Area
  • Future-proofs houses with smart home devices and ethernet wiring
  • Offers free estimates

Top News Updated

COMPANY MILESTONES

Chasov Electrical, Voice & Data is celebrating its 25th year in business in 2025.

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Top Survey Responses

From a recent Diamond Certified Survey Response: “They were timely and responsive, and they did the job as described. Michael, the owner, is personable and knowledgeable. He’s way beyond a ‘10.’”

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From a recent Diamond Certified Survey Response: “They did a large industrial building that had been neglected for years and they handled all of our needs. We dealt with a lot of contractors over the yearlong project and they were the best.”

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Trending Projects

Chasov Electrical, Voice & Data recently completed a condo conversion project for a client in San Francisco. The client praised Victor Gorbachev and Alex Kosmynin in particular for starting within...

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Chasov Electrical, Voice & Data
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Diamond Certified Video Reports on Chasov Electrical, Voice & Data

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Diamond Certified Researched Articles on Chasov Electrical, Voice & Data

Chasov Electrical, Voice & Data provides a wide range of electrical services for clients in San Francisco and the Greater Bay Area. The company’s work extends from small residential remodeling projects to complete house rewiring and commercial space improvements. The wiring methods it uses assure seamless integration of smart home devices, which, along with adding ethernet wiring, allows it to future-proof its clients’ houses. Chasov Electrical, Voice & Data also performs electrical service upgrades that allow for the simple addition of generators and/or solar batteries, car chargers, and full house conversion to electric power.

Owner Michael Chasov has many years of experience in the electrical contracting industry. He and his staff members immigrated to the United States from Russia, and most of them hold electrical engineering degrees. “Our extensive industry knowledge not only allows us to perform a variety of electrical tasks, but also to act as a guide for our clients, provide them with options and help them make the right choices for their properties,” says Mr. Chasov.

“Our primary focus is keeping our clients happy from the beginning of their projects to the end. We show up on time, give constant progress updates and honor our estimates. We want to gain customers for life, so if there's anything they're unhappy with, we'll make it right.”

Reduce your energy bill and help the environment with LED lighting.
As environmental awareness and responsibility have increased in recent years, so too has the desire to reduce energy consumption in new ways. A leading fixture in this movement is LED (light emitting diode) lighting, which is an alternative to traditional lighting that provides long-term economical savings and environmental benefits. To determine if LED lighting is right for you, consider the following information:

Energy-efficient.
Most LED bulbs use 1/3 to 1/30 the energy used by traditional bulbs, which means most homeowners recoup the initial costs and save more over the life of the bulbs. It’s estimated that the average home saves $14,000 in energy costs by switching 25 incandescent lights with 25 LED lights (based on more than 50,000 hours of use).

Less heat.
More than 90 percent of the energy burned by incandescent bulbs is wasted on unwanted heat. In comparison, LED bulbs burn cool and only use 10 percent of their energy as heat.

Long-lasting.
Most LED lights are rated for 50,000 hours of use, so even if they were left on 24 hours a day, they would still last an average of 10 years. In normal usage situations, most LED bulbs last 17 years or more. “They’re so efficient that they can literally work for 25 to 30 years without needing to be replaced,” adds Michael Chasov, owner of Chasov Electrical, Voice & Data in San Francisco.

Environmentally-friendly.
LED light bulbs don’t contain mercury or lead like traditional bulbs, and they don’t use mercury in the manufacturing process, which makes them safer for home use and better for the environment. Instead of treating them as hazardous waste, you can dispose of them easily.

No radiation or UV light.
Compact fluorescent bulbs have been criticized because they release radiation, which some say can be harmful to humans when used in close proximity. Also, lights that emit UV rays can fade and damage furniture and materials over time. Because LED lighting doesn’t produce ultraviolet light, this isn’t a concern.

Stable during power fluctuations.
Traditional bulbs can burn out during power surges or when the power source fluctuates, including when the bulb is turned on and off. LED lights offer instant light, so they aren’t sensitive to small or large power fluctuations and don’t unexpectedly burn out.

No filaments.

Filaments in incandescent bulbs can be easily damaged by bumping and jarring. LED lights don’t have filaments, so they’re generally sturdier.

Durable. Most light bulbs are made of breakable glass and metal, which can be hazardous during temperature fluctuations and when they’re dropped or hit. LED lights are made of shatterproof plastics and durable aluminum, which makes them much less likely to break when introduced to extreme temperatures or dropped/struck.

Electrical contractors are always looking for ways to differentiate themselves from their competition, and those that have earned the prestigious Diamond Certified award are already several steps ahead. In addition to its "Highest in Quality" status, Chasov Electrical, Voice & Data sets itself apart by offering its clients a unique package of services that most companies aren't qualified to provide. "When customers hire us, they don't have to hire separate network people or contractors to install things like sound systems," explains owner Michael Chasov. "We provide everything in one package, including a full spectrum of low-voltage wiring services."

Chasov Electrical, Voice & Data has been providing complete electrical services for residential and commercial clients throughout San Francisco since 2000. The company's work extends to service upgrades; electrical systems; lighting controls and LED lighting solutions; pre-wiring for solar panels and electric cars; telephone and cable networks; home theater, sound, CCTV and intercom systems; and more. It also handles small jobs, performs service calls, and rewires Victorian-era houses by using cutting-edge technological and eco-conscious systems that can be seamlessly integrated in any style.

Unlike electrical contractors that strive to complete jobs as quickly as possible and sacrifice quality control in the process, Chasov Electrical, Voice & Data takes the time to educate each client by walking them through the entire project and showing them what's involved. "We want to give our customers a complete picture of what's going on so they understand all their options," says Mr. Chasov. "For example, we tell them when they can reuse knobs and wiring instead of automatically charging them for replacements."

Another unique feature of Chasov Electrical, Voice & Data is its ability to perform high-end residential work that most electrical contractors can't handle. "We're highly trained and proficient with new technologies, including some just-developed wiring control systems," explains Mr. Chasov. "We constantly work with new systems, so we're able to help our customers make better decisions about what to put in their homes."

Diamond Certified Researched Capabilities on Chasov Electrical, Voice & Data

Service Area

serving area
San Francisco
Marin County
Serving San Francisco and the Greater Bay Area

Main Services

Electrical Contractor
  • Ceiling Fan Repair
  • Circuit Breaker Repair
  • Electrical Inspections
  • Electrical Panel Upgrades
  • Electrical Repairs
  • Electrical Services
  • Emergency Electrician
  • Hot Tub Wiring
  • Lighting Repairs
  • Outlet Installations
  • Subpanel Installation
  • Whole Home Surge Protectors
Lighting - Low Voltage Halogen
  • Halogen Flood Lights
  • Halogen Lighting
  • Light Fixtures
  • Light Installation
  • Low Voltage Landscape Lighting
  • Low Voltage Led Lights
  • Low Voltage Path Lights
  • Low Voltage Under Cabinet Lighting
  • Outdoor Lights
  • Recessed Lighting
Lighting
  • Ceiling Lights
  • Floor Lamps
  • Landscape Lighting
  • Led Lights
  • Light Fixtures
  • Light Installation
  • Outdoor Lights
  • Pendant Lighting
  • Recessed Lighting
  • Solar Lights
  • Track Lighting
  • Vanity Lights

Additional Services

Electrical Upgrades for Residential and Small Commercial Buildings

Company Info

Hours
Mon
08:00 am - 05:00 pm
Tue
08:00 am - 05:00 pm
Wed
08:00 am - 05:00 pm
Thu
08:00 am - 05:00 pm
Fri
08:00 am - 05:00 pm
Sat
Closed
Sun
Closed
Closed
Mon – Fri: 8am – 5pm
Weekends: By Appointment Only
Website
Contact
Chasov Electrical, Voice & Data

Capabilities Table

Company Name
Chasov Electrical, Voice & Data
Phone Number
DCID Number
DCID4156827582
Managers
Michael Chasov, Owner
Years in Industry
21 (Manager)
# of Employees
12
License
785830
Insurance
Liability Insurance,
Workers' Compensation
Founded
2000
Customer Type
Residential and Light Commercial
Payment Accepted
american express,
discover,
mastercard,
visa

Certifications & Awards

diamond certified logo

Key Factors

Chasov Electrical, Voice & Data Established in 2000
Established in 2000
Chasov Electrical, Voice & Data Residential & Commercial
Residential & Commercial

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Chasov Electrical, Voice & Data Website and External Feeds

FAQs

By Chasov Electrical, Voice & Data

How expensive is electrical work?

Will you help me choose the right lighting for my home?

Is it possible to switch my two-prong outlets to three-prong outlets?

Do I need electrical plans for my project?

What exactly does a service call entail?

Do you need advance notice to perform an electrical inspection?

Chasov Electrical, Voice & Data Ratings and Survey Responses

diamondcertified logo
Chasov Electrical, Voice & Data
312 SURVEYS
  • star image
  • star image
  • star image
  • star image
  • star image
  • Rating
17 CONSECUTIVE YEARS
SINCE JANUARY 2009
CERT 1486

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance

Phone Survey Responsesfrom 312 Verified Customers

Jackson B.

I would say to use them if you want to give your business to a local, professional, customer-oriented, and honest company.

They were timely, responsive, and they did the job as described. Michael, the owner, is personable and knowledgeable. He's way beyond a '10'.

Verified Customer of Chasov Electrical, Voice & Data, 1 of 312

10 Quality
Yes Loyalty
Gilbert C.

They did excellent work, they were reliable, and I felt their price was a good value.

The quality of the work

Verified Customer of Chasov Electrical, Voice & Data, 2 of 312

10 Quality
Yes Loyalty
Brad R.

They were efficient in putting their work together.

The service people were friendly.

Verified Customer of Chasov Electrical, Voice & Data, 3 of 312

10 Quality
Yes Loyalty
Christine D.

They did a large commercial industrial building that had been neglected for years from our last tenant and they handled all of our needs. We dealt with a lot of contractors over the yearlong project and they were the best.

Super timely, they did what they said, they were professional and they did such a great job, super well.

Verified Customer of Chasov Electrical, Voice & Data, 4 of 312

10 Quality
Yes Loyalty
Lourena R.

If they have a problem and want an estimate, have them come and check it. He will look at your house and he will pick the person who will do the best job for you and we have a favorite. They are just very accommodating.

They were on time, very efficient, and when they left here, the place was cleaner than when they had arrived.

Verified Customer of Chasov Electrical, Voice & Data, 5 of 312

10 Quality
Yes Loyalty
Janice H.

He understands what needs to be done right away when you explain to him what you need. He is honest with his prices and when he says he will be there, he will be there. He is timely and very reliable.

I guess the fact that he is reliable.

Verified Customer of Chasov Electrical, Voice & Data, 6 of 312

10 Quality
Yes Loyalty
Lily A.

They listen. They give you great advice if they can't do the work. I found it very enjoyable. I thought the owner was very courteous and nice. For senior citizens that is a real plus-plus.

They were fabulous. I think they listen to what you want and then they reiterate it to make sure they understand what you want to have done. It went very smoothly.

Verified Customer of Chasov Electrical, Voice & Data, 7 of 312

10 Quality
Yes Loyalty
Jonell J.

I would tell him that he is an excellent electrician and he knows his stuff and when you get him committed to a job, he will get it done on time, but it can be really hard to get him.

He has a really smart team and they installed a very complicated intercom system for me and they did an excellent job.

Verified Customer of Chasov Electrical, Voice & Data, 8 of 312

10 Quality
Yes Loyalty
Susan K.

He didn't waste my time. He saved me some money because he told me the reason I had lost power was because a switch was turned off. He could have totally scammed me, but he didn't.

He was honest.

Verified Customer of Chasov Electrical, Voice & Data, 9 of 312

10 Quality
Yes Loyalty
Lily C.

They are very friendly and they provide all kinds of information if you ask questions. The electrician who worked for me was good about answering questions.

Their responsiveness, the actual work, and making me feel like the work that they did was correct

Verified Customer of Chasov Electrical, Voice & Data, 10 of 312

10 Quality
Yes Loyalty
Linda G.

A fabulous guy came out named Demitri. He came out to do the work, and he was absolutely hilarious, a great person, competent, and a great worker.

The company is very confident concerning their work and what was going on concerning my needs.

Verified Customer of Chasov Electrical, Voice & Data, 11 of 312

10 Quality
Yes Loyalty
Matt B.

They were punctual, and their estimate was accurate, which are the two most important things. They did what they said they were going to do.

They do what they say they are going to do for the price they say they are going to do it.

Verified Customer of Chasov Electrical, Voice & Data, 12 of 312

10 Quality
Yes Loyalty
Joseph M.

He and his guys are probably some of the best electricians that I have ever seen, very efficient, cost effective, and knowledgeable.

The quality of the work is very high, and their knowledge.

Verified Customer of Chasov Electrical, Voice & Data, 13 of 312

10 Quality
Yes Loyalty
Karen C.

Michael Chasov is communicative with in his explanations, and very dependable. I have confidence in the work his company does.

The problem was diagnosed correctly and fixed in a timely manner. They were prepared to do the work, and everything got done.

Verified Customer of Chasov Electrical, Voice & Data, 14 of 312

10 Quality
Yes Loyalty
K.R.

They did a very good, professional job. They were very accommodating and very fast. I would recommend them quite strongly.

The ease of communication with email was great. The experience was smooth and on time. The service was perfect in my book.

Verified Customer of Chasov Electrical, Voice & Data, 15 of 312

10 Quality
Yes Loyalty
Francis C.

He is a clear communicator, a problem solver, prompt, and he lives up to what he says he will do. The work is done well.

To me, the most important thing is that the contactor understands what needs to be done. He communicates well and follows up. The work is performed well.

Verified Customer of Chasov Electrical, Voice & Data, 16 of 312

10 Quality
Yes Loyalty
Nicholas F.

Great workers, punctual, true to their word, just good people,and they don't cut corners. They do the job correctly.

No cutting corners, and the job was done correctly.

Verified Customer of Chasov Electrical, Voice & Data, 17 of 312

10 Quality
Yes Loyalty
Kathy M.

Victor Gorbachev was extremely congenial, very efficient, very honest, and he offered some advice. It was very good.

Victor Gorbachev gave us good advice, and he told us what we should do next time. He handled the problem efficiently and very well. I recommend them very highly.

Verified Customer of Chasov Electrical, Voice & Data, 18 of 312

10 Quality
Yes Loyalty
Candace C.

I would suggest lining up several things together at once, but I think they are very quick and very efficient.

I think they did a thorough job and the repair still works.

Verified Customer of Chasov Electrical, Voice & Data, 19 of 312

10 Quality
Yes Loyalty
Matthew F.

Both times that I called them, they came out within 24 hours, were reasonably priced, and they were quick.

They are nice, they know what they are doing, and they are fast.

Verified Customer of Chasov Electrical, Voice & Data, 20 of 312

10 Quality
Yes Loyalty
Janice F.

I think they are very proficient in what they do. They are very neat. I feel very confident in their work.

They fixed the problem promptly. They were neat in the work they did. I really appreciate the work they did.

Verified Customer of Chasov Electrical, Voice & Data, 21 of 312

10 Quality
Yes Loyalty
Zoe W.

I would say that are very neat and very knowledgeable. They communicate well. You get what you pay for.

The quality of the work

Verified Customer of Chasov Electrical, Voice & Data, 22 of 312

10 Quality
Yes Loyalty
Carol C.

I would recommend them to my friends and I would tell them that they do good work and the permits pass.

The person he sent, Demitri, was wonderful, polite, and he cleaned up after himself. He did work that passed inspection at a reasonable price.

Verified Customer of Chasov Electrical, Voice & Data, 23 of 312

10 Quality
Yes Loyalty
Elizabeth J.

He is incredibly professional, and he really knows his stuff. You can count on him to do the job right.

I had a very complicated installation for my front door, and they just stayed with it until they solved it. They even brought in a manufacturer's expert.

Verified Customer of Chasov Electrical, Voice & Data, 24 of 312

10 Quality
Yes Loyalty
Scott F.

They were good at coming up with solutions for problems that other contractors couldn't come up with.

They were very flexible with my schedule. I was very happy that they were able to work around my schedule.

Verified Customer of Chasov Electrical, Voice & Data, 25 of 312

10 Quality
Yes Loyalty
Karen W.

I have been using them for years. I have found them very reliable, friendly, and very professional.

They come out and get the job done. I was very happy with their work.

Verified Customer of Chasov Electrical, Voice & Data, 26 of 312

10 Quality
Yes Loyalty
Madison S.

They come on time, they know what they are doing, and they do it well. They don't gouge, either.

They knew what they were doing

Verified Customer of Chasov Electrical, Voice & Data, 27 of 312

10 Quality
Yes Loyalty
Andrew S.

They are very reasonably priced, and they do solid, quality work. They get the job done quickly.

The level of communication was good. Michael was always right on top of keeping me informed. My expectations were always met.

Verified Customer of Chasov Electrical, Voice & Data, 28 of 312

10 Quality
Yes Loyalty
Dave V.

They are very reliable and they respond to phone calls. They do a variety of electrical things.

They are nice and reliable. They can do the job.

Verified Customer of Chasov Electrical, Voice & Data, 29 of 312

10 Quality
Yes Loyalty
James F.

I have recommended them to quite a few customers and clients and I would highly recommend them.

Their knowledge and their expertise

Verified Customer of Chasov Electrical, Voice & Data, 30 of 312

10 Quality
Yes Loyalty
Lee S.

They were on time, punctual, and they were in and out. They knew exactly what they were doing.

The work and the personalities of the people like Michael who did the work, they were on time and that was important.

Verified Customer of Chasov Electrical, Voice & Data, 31 of 312

10 Quality
Yes Loyalty
Jason R.

They were friendly, quick to get the work done and get a proposal and they were very helpful.

Everybody was very knowledgeable and they explained everything to me.

Verified Customer of Chasov Electrical, Voice & Data, 32 of 312

10 Quality
Yes Loyalty
Clifford C.

They said they would do this work and that's exactly what they did. There were no surprises.

They got it done.

Verified Customer of Chasov Electrical, Voice & Data, 33 of 312

10 Quality
Yes Loyalty
Ronald D.

They are on time, they do good and clean work, and they never leave a mess after they leave.

The workmanship

Verified Customer of Chasov Electrical, Voice & Data, 34 of 312

10 Quality
Yes Loyalty
Rosemary C.

The owner, Michael, is very honest and friendly. I actually made him laugh a few times.

The work was impeccable and passed all of the inspections.

Verified Customer of Chasov Electrical, Voice & Data, 35 of 312

10 Quality
Yes Loyalty
T. S. P.

They are reliable and knowledgeable about the work that they do. They are honest.

That they did what they said they were going to do, and I was satisfied.

Verified Customer of Chasov Electrical, Voice & Data, 36 of 312

10 Quality
Yes Loyalty
T. D. I.

He's very reasonably priced, knowledgeable, and he has good technical ability.

His knowledge and ability to get hard to find parts and come up with solutions

Verified Customer of Chasov Electrical, Voice & Data, 37 of 312

10 Quality
Yes Loyalty
Peter K.

I would say that these are not your typical electricians, they are way above.

They were very predictable, thorough, and competent.

Verified Customer of Chasov Electrical, Voice & Data, 38 of 312

10 Quality
Yes Loyalty
Mark R.

It's hard to find a good electrician. I would definitely recommend them.

Really, really responsive even though we had a difficult job for them. They came back as many times as we needed to get it working right.

Verified Customer of Chasov Electrical, Voice & Data, 39 of 312

10 Quality
Yes Loyalty
Mike W.

They were very knowledgeable and very skilled at what I needed them for.

They seemed to have an expertise with data and wiring that other electricians don't have.

Verified Customer of Chasov Electrical, Voice & Data, 40 of 312

10 Quality
Yes Loyalty
Benjamin W.

They were super affordable and easy to work with. He was trustworthy.

That they were fair and honest

Verified Customer of Chasov Electrical, Voice & Data, 41 of 312

10 Quality
Yes Loyalty
Matthew W.

They provide quality work and are always on time and very friendly.

They always kept me updated on the overall process. They are very communicative.

Verified Customer of Chasov Electrical, Voice & Data, 42 of 312

10 Quality
Yes Loyalty
Bob S.

They do quality work at competitive prices. They are very reliable.

I like that they gave me quality service, that they are reliable, and that they are competitive in price.

Verified Customer of Chasov Electrical, Voice & Data, 43 of 312

10 Quality
Yes Loyalty
Margarita K.

If you have a complicated issue, they would be the people to call.

The best for me was their technical expertise.

Verified Customer of Chasov Electrical, Voice & Data, 44 of 312

10 Quality
Yes Loyalty
David S.

They were excellent people to use and they were very reasonable.

They were extremely responsive.

Verified Customer of Chasov Electrical, Voice & Data, 45 of 312

10 Quality
Yes Loyalty
S.W.

Michael is honest, and he will take care of you in an emergency.

He came out here and got the job done. He did a temporary fix to get us up and running, before further work needed to be done.

Verified Customer of Chasov Electrical, Voice & Data, 46 of 312

10 Quality
Yes Loyalty
Linda Z.

I told my sister they were great and she has already used them.

Cooperative, and they know what they are doing.

Verified Customer of Chasov Electrical, Voice & Data, 47 of 312

10 Quality
Yes Loyalty
Therese G.

He got right to the problem and now everything is working fine.

He did the work in a short time. He was serious but friendly.

Verified Customer of Chasov Electrical, Voice & Data, 48 of 312

10 Quality
Yes Loyalty
Arthur V.

He is pretty upfront, and he finishes the work. He follows up.

That Michael was prompt and completed the job

Verified Customer of Chasov Electrical, Voice & Data, 49 of 312

10 Quality
Yes Loyalty
Harold B.

Dimitry is very knowledgeable. I recommend them all the time.

They are super knowledgeable. Dimitry follows through with what he says.

Verified Customer of Chasov Electrical, Voice & Data, 50 of 312

10 Quality
Yes Loyalty