- Residential Work
- Commercial Work
HomeAdvisor Screened & Approved
This service professional has passed the HomeAdvisor screening process.
Learn about our screening process99% Recommended
32 Years In Business
Company Details
- Verified Licenses
Hours
- Mon: —
- Tue: —
- Wed: —
- Thu: —
- Fri: —
- Sat: —
- Sun: —
View All Details & Credentials
Achievements
Service Details
Areas of Expertise
- We are not currently offering smaller electrical services, including outlets, fixtures, running wire or panels for things that are not in the home like rvs or boats. We only service electrical panel upgrades within the home and the average cost for this service is around 5000$ but cost will go up or vary according to scope of project
- Electrical Service Calls
View All Offerings and Cities Served
Cost Information
- Free Estimates
Reviews
Write a Review
Showing 1-10 of 76 results
5.0
Fay S.
Rollinsford, NH
11/30/2025
If you are looking for the Best of the Best hire Mark!! Professional, Quality and Amazing!! Thank you for adding a Circuit Breaker for my Water Tank!!
5.0
David R.
Sanbornville, NH
7/9/2025
I am writing to express my sincere appreciation for the outstanding work performed by Diamond Electric during a recent electrical service upgrade at our property. From start to finish, the entire crew demonstrated professionalism, punctuality, and exceptional craftsmanship. They arrived on time, communicated clearly throughout the process, and completed the work efficiently and safely. What stood out most was their attention to detail—even the smallest aspects of the job were handled with care and precision. It’s not often that you come across contractors who combine technical expertise with such a strong commitment to quality and customer satisfaction. I would not hesitate to work with them again, and I highly recommend their services to anyone in need of electrical work.
5.0
Jeanne F.
Sanford, ME
8/13/2021
I would recommend them. My service was done in record time. The electrician was very polite and friendly.
5.0
Kay C.
New Durham, NH
8/3/2021
March Wachowiak did excellent work and was very helpful when we asked questions. We definitely would hire Diamond Electrical and specifically Mark, again.
4.5
Craig M.
Somersworth, NH
8/1/2021
The service was quick and appears to be quality. I took off half a star because there were some things I would have liked addressed that were not. My system is very old and has aluminum wiring in some parts of the home. Also, my basement was wired in total with a 15 amp breaker which has failed under load. Instead of replacing with a 20 amp it was left as is.
5.0
David W.
Wells, ME
7/27/2021
Total Professional and Friendly crew! You really want to call them if you are looking for fast and an excellent final project
5.0
David W.
Barrington, NH
5/18/2021
Very good, clean and efficient
5.0
Lloyd R.
Leland, NC
10/23/2020
Responded right away ..was fair and honest.
5.0
Stephen S.
Rochester, NH
10/10/2020
He was prompt,did quality work and was priced reasonably
5.0
Rich L.
Barrington, NH
9/11/2020
Mark is an honest electrician and does outstanding work. Fast and efficient. Will hire again for all my electrical needs.
Find More Pros
HomeAdvisor allows Service Professionals to post information about themselves and their business on their profile. HomeAdvisor does not review or verify the information representations set forth in those profiles as they are self-reported by the Service Professional.
To find more licensing information for your state, visit our Licensing Requirements page. Note that some states require local or county level licensing and you should verify whether or not your pro is properly licensed.
