Cornerstone Services
Company Overview
Comprehensive Electrical, Plumbing, HVAC, Home and Office Cleaning, and Handyman Services tailored for your home and business. At Cornerstone Services, you will experience top-notch customer support and care.
Our team offers professional solutions for every electrical need, including repairs, service enhancements, standby generator setups, lighting design, and ongoing maintenance. For any electrical task, our knowledgeable team is equipped to provide the best answer.
Owner John Croteau founded the company in 2003, emphasizing integrity, trust, and professionalism. Over the years, he has expanded his team of experts who are trained to meet all your residential or commercial requirements.
The team, led by John, is dedicated to the company's promise of outstanding customer service, always placing your safety and concerns first.
Whether it’s Electrical, Plumbing, Home and Office Cleaning, HVAC, or Handyman Services, John and his team are here to support your family and the local communities. Their goal is to improve every job site they visit and they eagerly anticipate working on your future projects WITH you and FOR you.
Business Services
- Bathtub installation
- Bathtub repair
- Circuit breaker installation
- Circuit breaker repair
- Doorbell installation
- Doorbell repair
- Drain installation
- Drain repair
- Electric inspection
- Electric installation or replacement
- Electric panel installation
- Electric panel repair
- Electric repair
- Wire installation
- Wire repair
- Electric vehicle charging station installation
- Faucet installation
- Faucet repair
- Garbage disposal installation
- Garbage disposal repair
- Gas line installation
- Gas line repair
- Generator installation
- HVAC installation or replacement
- HVAC system repair
- HVAC system maintenance
- Light fixture installation
- Light fixture repair
- Outlet installation
- Outlet repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Sump pump installation
- Sump pump repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | 12:00 AM - 12:00 AM (Next day) |
Recommended Customer Reviews
I ? contacted this business in regards to a leak in my tub wall and clearly explained that the leak was in the wall around the grout and the tile . They scheduled an appointment and I changed my plans for the day and made sure I was available . When they arrived they sent a plumber instead of a handyman who clearly stated what do you want me to do about it . When I call them back they explained that I had said there was a leak . Well they will contact it through an online source and the online contact clearly stated what the problem was and had nothing to do with plumbing . I told them I had taken the day to make sure I was available and I wanted someone out here today . They stated they'll send somebody out on October 30th which is unacceptable . I do not recommend this company as they obviously don't listen and follow instructions and don't appear to be very organized
if i could give cornerstone zero stars i would. not because of poor quality work but because last saturday, i needed and electrician for emergency work. i called, and called, and called. guess what? no answer for a company that suppose to work 7/24 service. luckily i found a licensed electrician from methuen who showed up, did the work and was very reasonable. if you need cornerstone in a pinch, don't waste your time.
Best to get an estimate from other plumbers. I think I made the mistake of paying top dollar for a water heater replacement $3,200. On top of that, they now hound me with all kinds of upsells - like memberships, etc.
John requested a phone number to contact me which I gave him and never heard back from him. Went with someone else.
Scheduled 2 weeks in advance Took day out of work, planned a simple electric box installation. They called me the day before and asked to change my appt to 'now'. I could not accommodate and asked to keep my same appointment. I was told fine and 2 hrs later they called to cancel and reschedule. I had contractors coming in and working around this appointment. Horrible service, no explanation or understanding of the situation. Would not recommend or use this company for anything.
Less than a year ago, they put a water heater in my townhouse. my mother owns the property so she gave the go ahead on the replacement. Unfortunately she didn't check with me first. We were in Florida on vacation at the time. They charged my mother 3 times what it should've cost. I swore I'd never use them again. Then the water heater started leaking so I had to call them because they put it in. They told me it was not leaking. When they came, I had been having problems with the hot water in my shower not getting as hot as it used to. I mentioned it to the guy who came. He told me we needed to replace our pipes and quoted me $6000-10,000. I was shocked he would say that. I knew that's not what it was since I had researched it. It was the mixing valve. After he left, I had absolutely zero hot water. I called another plumbing who fixed it for under $500. The water heater that ""doesn't leak"" has water pouring out of the overflow pipe all the time. We obviously need to get that issue fixed since it's constantly pouring into our basement, even after we put a pan under the pipe. I do not want these people in my house ever again though so I will be looking for an honest plumber. It's sad to try to trick people into paying so much money for something not even needed. I am also disgusted about how they took advantage of my elderly mother!!!
E S.I originally called this place to get a quote but ended up cancelling bc I chose to go with other companies to give me estimates bc they did not charge me a fee to get on site. A woman called me from Cornerstone and asked me why I cancelled and I told her I was going to work with other companies who did not charge a fee to give me a quote. She lied and said they have a promo going where they are not charging the fee. I made an appointment and they still charged me after telling me it would not be a cost. Bait and switch, and I do not plan on working with a company like that
We were looking to get our vents cleaned. One company came in and quoted us $1200. We thought it was a bit high so we called John. He came out in a timely manner and determined our vents were actually clean and didn't want to provide a service that was unnecessary just to make money. Shows you how professional this company is. Honest and knowledgeable in the field. We will be contacting Cornerstone in the future for any services we may require!
Lanning M.We had a plumbing issue, though not an emergency was still urgent. I called Cornerstone, and a plumber was here within a couple of hours. The cost of the work did not exceed the estimate. The plumber was cordial, professional and kept us informed on the work being done. I must say we have used Cornerstone before for electrical work. We highly recommend them.
Easy, fast estimate with same day completion! I needed a gfi outlet near my toilet after purchasing a bidet. I appreciate how Cornerstone sends a text to you letting you know the technician is on the way. Rick was not only very professional, but very personable as well! He was on time and completed the estimate/job same day at a very reasonable cost. My neighbors are always sharing 'vendor' info to help each other out, and Cornerstone is going on our list. Service matters to this company - you can tell by the reviews!

























