Cornerstone Electrical Services, Inc.

4.85 | 14 Verified Ratings
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P.O Box 1695
Salem, NH 03079
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Cornerstone Electrical Services, Inc.

When you choose Cornerstone Electrical Services, Inc., for your electrical needs you are guaranteed of an on time, expert electrical service that has already been enjoyed by thousands of homes and businesses across Southern New Hampshire. We are licensed and insured and our electricians are trained to the highest standards to provide you with safe, reliable electrical solutions, repairs and installations. For a first class service experience for all your electrical needs, call Cornerstone Electrical Services, Inc., today! We look forward to earning your business.


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Service Area

  • Rochester
  • Portsmouth
  • Dover
  • Hampton
  • Lee
  • Epping
  • Exeter
  • Windham
  • East Candia
  • Plaistow
  • Atkinson
  • Salem
  • Newmarket
  • Rye Beach
  • Stratham
  • Somersworth
  • Seabrook
  • Candia
  • Rye
  • Nottingham
  • Newfields
  • Raymond
  • Greenland
  • See All >

Services Offered

  • Electric Wiring Upgrade
  • Electric Outlets & Fixtures Install
  • Generator Install
  • Portable Generator Install
  • Bath Exhaust Fan Install
  • Ceiling Fan Install

Areas of Expertise

  • Electrical Switches, Outlets, Fixtures
  • Electrical Panel Upgrades, Wiring
  • Generator Sales and Installation
  • Oudoor Building Lights and Vehicle Charging Stations
  • Residential and Commercial

Quick Facts

Business Hours
(Please call to confirm)
  • Trip Charge
  • Credit Cards Accepted


In Business Since: 2003
State Licensing
Trade: Master Electrician
License #: 10762
Expiration: 02-28-2021
Trade: Electrical Corporation
License #: 0426C
Expiration: 05-31-2019
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Ratings & Reviews
Cornerstone Electrical Services, Inc.

Real feedback from real homeowners.
Learn more about this pro by reading the ratings and reviews below.
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5.0   |  
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5.0   |  
Arrived on time. And completed my projects in no time at all. I will use again.
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5.0   |  
Review by in Deerfield, NH
Jason Wilson from Cornerstone did a fine job installing, repairing, and adding extensions to our ceiling fans in three separate rooms. It was a challenging job, and he was courteous, efficient, and persevered to get the job done correctly.
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5.0   |  
Very prompt,courteous and professional.
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5.0   |  

0 of 1 users found this review helpful.

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5.0   |  

0 of 1 users found this review helpful.

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5.0   |  
Crew was very professional and they are very good at communication and very responsive. I will definitely be using them again in the future.

1 of 1 users found this review helpful.

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5.0   |  
Review by
Project: Install Electrical Switches, Outlets, and Fixtures
Very timely. Easy to do business with. One call. Always on time.
4.0   |  
Review by in Derry, NH
Project: Install a Fixed Generator
John came out and looked at what needed to be done, gave me a price that seemed reasonable. They came out installed everything quickly, explained how it all worked and made sure I understood it all. Maybe I could have gotten generator and panel cheaper, but having it delivered and installed properly made the price of it all worth while. The tech that came out was great, very friendly. I would use the company again if need arises.
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5.0   |  
Review by in Windham, NH
Project: Install a Portable Generator / Transfer Switch
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Showing 1-10 of 14
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Seal of Approval

What is the screening process that Service Professionals go through in order to become members of the HomeAdvisor network?

  1. Verify Trade License
    HomeAdvisor checks to see if the business carries the appropriate state-level license.
  2. Verify Insurance
    As a part of our screening process, we encourage professionals to carry general liability insurance. We require coverage for hundreds of services.
  3. Verification of State Business Filings
    For business types that require a Secretary of State filing, we confirm that the business is in good standing in the state in which it is located.
  4. Criminal Records Search
    HomeAdvisor uses 3rd party data sources to conduct a criminal search for any relevant criminal activity associated with the owner/principal of the business.
  5. Sex Offender Search
    We confirm that the owner/principal is not listed on the official state Sex Offender web site in the state in which the owner/principal of the company is located.
  6. Bankruptcy Search
    We use 3rd party data sources to check the history of the principal/owner of the business for bankruptcy filings by or against them.
  7. Legal Search for Civil Judgments
    We use 3rd party data sources to check the principal/owner of the business for state level civil legal judgments entered against them.
  8. Liens Search
    We use 3rd party data sources to check the principal/owner of the business for liens placed against them.
  9. Identity Verification (SSN)
    HomeAdvisor verifies the social security number(s) of the owner/principal for identity check purposes. This check applies primarily to smaller business entities.
  10. Identity Verification (Reverse Phone Lookup)
    We conduct a reverse business phone lookup to identify records matching the phone number information provided by the business.

NOTE: Member service professional information confirmed as described above may change or expire over time; while HomeAdvisor attempts to maintain accurate and up-to-date information, and confirms changes when notified, we cannot guarantee that profile and screening information is accurate. Therefore, we recommend that before working with a service professional you verify that information presented is still current and/or acceptable to you.
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