Electrical Repairs & Installations

Cornerstone construction LLC, These guys are a truly angel's of God. They built a gazebo for me . Absolutely FANTASTIC.SO compassionated Kind, and many more I could go on. You're lucky if you get this company. to do work for you .You will be blessed like i was. Thank You again guys. Many of our lord's blessings!!!!!!

Cornerstone construction did awesome work on my outside electrical wires and meter box. Very reliable, friendly and professional. I highly recommend them!

Quick, thorough, professional handling of our heating problem!

Great work and fast response. Solved some electrical issues in my house. Highly recommend

Shout out to the amazing craftsmanship and professionalism wit cornerstone construction

These guys are professional and do incredible work!

Thanks so much JT, what a great guy, trustworthy dependable everything you want in a company!

Definitely recommend! Always friendly and helpful. JT does an awesome job!!

I have an old stone and block house that I was in the process of remodeling with another contractor. It was a bad experience with a lot of things left undone or not done properly and they never came back to finish or fix. JT and team came out for an estimate and just a few days later started the job. JT, Ed and Jay were a pleasure to work with. They know their stuff and got my house finished the right way in a reasonable amount of time. I truly appreciate their transparency at every step and would definitely recommend them when looking to hire a contractor who can do pretty much anything. There are a few things that still need to be done and I wouldn't think of calling anyone else. Nice work guys! I'm so happy I could cry right now! LOL So, hire Cornerstone! You will not be disappointed.

Great place to work for or get your house fixed and cleaned up.. great quality work that comes from the heart

Excellent service!!!! They came the same day I called and completed the job quickly! They're the best!

I called Cornerstone Construction for an emergency electrical installation project. Despite the snow covered roads and rough terrain, they showed up right away and completed the job in one day. Highly recommended.

Very professional and organized. Had a great experience working with them. I will be calling them for any work I have in the future. The owner was very personable and went out of his way to make sure I was happy with the results. Highly recommend this amazing team!

Called them about some wiring issues in our house and they came the next morning and fixed everything (multiple wiring issues) within an hour. Super quick and very professionell and nice! They made sure everything worked right and cleaned up afterwards. Couldn’t be happier with the electrical service they provided!!

JT and his guys did amazing work on my back porch and living room! He also recently came and installed an outlet in my kitchen the day after I called. I highly recommend Cornerstone Construction.

Prompt estimate done with attention to detail. Service was done one week later. The guys were on time and friendly. Made sure I was happy with the job before they left. Will 100% be giving them more business.

The experience I had with cornerstone construction was by far the most professional, punctual, safe & clean co. I have ever dealt with, The quality of Jonathan Dering's workmanship is top notch, I'm a satisfied customer & would refer him without hesitation, It's not easy today to trust what people say they will or can do , Cornerstone construction will be who I call for any job I may need done in the future, Nice to know there are still good people out there,

They did a great job fixing some finicky wiring and lighting around our apartment. They also installed some baseboard heating and explained everything throughly. I will definitely be working with them in the future. Thank you!

This business genuinely cares about doing the job right and attention to detail. We needed someone quick to our siding back on the house before the next storm hit and we needed it done right! We had reached out to them and they responded quickly and got it done. They did beautiful work and reattached / secured the siding. You won’t be disappointed by any service you need from this business.

Great work and fast response. Solved some electrical issues in my house. Highly recommend

Highly recommended for anything needed done to your home. Very nice work, respectful and friendly.

JT and his assistant were timely and did great job and floor repairs in my upstairs hallway

Jonathan is a very good guy, stuck with his word. Showed up on time and job that was done exceeded my expectations by far. Very clean and honest work.

Very professional! Best electrician in carbon and Schuylkill county!

Super, dependable company. They do top notch work and are extremely reliable. Very professional to work with, and pricing is reasonable. I highly recommend this company.

Prompt and professional service. Thanks JT for getting us back up and running!

When we gutted our downstairs kitchen and living areas to the studs, our entire electric system had to be replaced. Because we were going to insulate with spray foam, JT at Cornerstone had to make sure our new sub panel and every plug, feed, and junction box was perfectly placed before the spray foam was applied. JT and his crew installed all the outlets and lights and appliances perfectly. His communication and many suggestions during the process ended with a dream kitchen. Below are “before” (brown tones) and “after” (gray tones) photos.

Very nice electricians called when they were on the way called me when they got there so I can open the door did the job quick and had no issues !

Offered to come to my home for a small job, when no other electrician would do it. That speaks volumes.

I own and operate a property management company. We have been using JT at Cornerstone for about 6 months now for multiple problems and jobs. He is professional, timely, and easy to work with. Provides fair pricing, before and after pics and detailed invoices which we appreciate. Will continue to use him in the future and recommend him to anyone in the area needing an electrician.

Great work done on the back of our house where our electric meters were just hanging. The were professional and quick. Will deffinatly refer to them on future projects

Reliable, good communication, got the job done . I would recommend his services. 👍

Highly recommend!!!! Installed security system for me..

Absolutely wonderful experience. Professional from the start. The crew is extremely polite and hard working. They really went above and beyond and I couldn’t leave a better review. Their pricing is extremely reasonable also.

I called Jonathan for an estimate on a few electrical components I needed installed on a rental property of mine. That same day he was there on time and was able to present me with an estimate! He scheduled me for the very next day and the job was completed! him and his crew did a fantastic job from start to finish. I will be using cornerstone on my next project!

Excellent work, clean and on time

Prompt Service with attention to detail, highly recommend

Showed up on time, inspected my wiring and quickly found the problem. Fixed the residential electrical problem at my home left by the previous electrician very quickly and did a good job. Would 100% recommend if you need electrical work done.

Highly recommend. They worked on updating the electrical and remodeling of my units 4-plex. Ed From start to finish, communication was on point and professional. Deadlines were met on time so we could rent the units as soon as possible. Quality of work was excellent. They know what they are doing and it shows in their work. Would definitely use them again.

Very reliable , does a very good job and is very respectful. Great quality and prices

Very professional. The crew is respectful and goes above and beyond to make their customers happy. I would definitely recommend Cornerstone Construction.

Great company to hire . Jonathan is very skilled and the only one I would trust doing any electrical work..great prices ...call him for your services

I’ve used Corner Stone construction for all my investment properties & renovations. The best in the business.

He was on time, knew what he was talking about, did a great job. I will refer him to family and friends. Thanks so much

I hired Cornerstone Construction to remodel my kitchen. I couldn't be happier. The guys were all very highly skilled and professional. My input was listened to and they made it happen at a fair price, in a timely manner and EXACTLY as I wanted. I even changed my mind mid construction a few times and they worked with me and adjusted the plan and presented various options. I got the kitchen I wanted- and even more. I highly recommend them if you are in the market for skilled, fair, professional contractors.

Cornerstone Construction LLC was recommended to me by a co-worker of mine for an electrical job at my house. I called Jonathan and he was there the same day to review the job. The next day the job was completed in full. The work was professional, clean and neat. The owner was knowledgeable, friendly and willing to work with me. Your home is in good hands with Cornerstone Construction LLC. A+ service.

Cornerstone was very professionally when installing the fan. They did a great job and cleaned up after, they were also very good with my dog. I would use them again

Absolutely the best contractor I have dealt with. Very prompt and great communication. Employees are great and hard working. I had my garage demolished by them in record time and they left the site cleaner than it was before they started! Highly recommend and I’ll be hiring them for more projects in the future.

We didn't have to wait, they came to see us the same day we called! They did an awesome job!

Lost power on two floors in my house two guys from Cornerstone came out and in 20 minutes power was fixed! Great service!

Called Cornerstone Construction to change locks on my property and also to change outlets & fix a power outage issue in my tenants house. Both times they showed up when they said they would, fixed both issues in a timely manner and showed professionalism. Prices were standard and I was happy with the work they did each time. Would recommend and would do business with again!

Very friendly, fair prices, same day service.

Cornerstone came out after another electrician came out and could not fix our problem..they came within an hour of calling and had our electric fixed within 10 minutes of being here! Very professional and knowledgeable! And reasonably priced!

Jonathan is a very skilled electrician. Excellent craftsmanship and fast response time. I’ve used Cornerstone multiple times, most recently for an outlet addition to a bedroom. The job was done quick and clean. Everything was done to code and safely. I highly recommend Cornerstone for all electrical and construction needs!

I went three days without electricity due to a broken wire main. I've tried to contact several electric companies and they were not able to come to my rescue because they were approaching the weekend and I could not wait until next week to get the power on. I decided to place a phone call to Cornerstone Electric and I was lucky enough to speak to JT. He was kind enough to collecet my information and after that, we met within a short period of time to assess the issue. It was one of the best phone calls that I have made during the course of the day. J.T helped resolving the issue in a professional manner and did an awesome job to restore the outage that I was trying to restore in three days. J.T is a very kind, friendly gentleman and a true professional. I highly recommand him to other clients cause he does excellent work. Thanks JT for a job well done!

Contractors are a dime a dozen, honest contractors are hard to find! Cornerstone is reliable and trustworthy

Efficient and clean

Great company to work with. They were highly professional, on time, and affordable. Cornerstone does excellent work and I'd highly recommend them anytime. Nothing but good things to say about these guys.

Awesome company to work with! Jonathon was prompt, knowledgeable, and installtion was flawless in completing our panel swap project! Communication was always swift and completed everything within the timeline given. Cannot recommend them enough!!

I would like to commend conerstone co. The professionalism & The time Mr.Dering takes to see his job's are completed with full satisfaction for his customer & Dedication he gives is something you don't see much of today, The work ethics from this company comes highly rated, I recommend Cornerstone Construction, 🚧 The work is outstanding , I recommend Mr. Dering not only for his professionalism , But the quality of work , Ethics, & commitment, spells beyond Excellence........

I am so happy with the work Cornerstone Construction LLC has done for us! They were quick to demolish our garage and cleaned up better than it was when they started! Ifyou need a contractor, this is who you should contact! Very prompt, courteous and they are knowledgeable and trustworthy! I will always go back to them with future projects! ☮️

Would recommend to anyone who needed professional, curious, and quickly done service. We had our home in need of updated wiring and are very satisfied with the work done. Highly recommend their quality service.

Fast, reliable, professional and friendly. Prices are reasonable and JT is very informative

I would highly recommend Jonathan to anybody looking for a reliable, honest and professional electrician. His crew also deserves at least 5 stars due to the fact that they had to deal with a very irate and unreasonable tenant while they were doing their work. Jonathan showed up exactly as planned and completed the job earlier than expected even while being harassed for just doing his job. Left everything more orderly than when he arrived. I have recommended him before and would definitely recommend him again. Good JOB!!!

Prompt and professional service. Thanks JT for getting us back up and running!

Great company to deal with. Professional and quick.

Quality work very reliable, professional

Great work!

Cornerstone has come through multiple times when I needed him. Excellent work and professionalism. Thank you!

Jonathan, was a pleasure to work with, he came out right away to look at the work and scheduled all work and completed in a week. I was very happy with his workmanship and his reasonable prices. I would highly recommend him and his crew. I will definitely use them again in the future.

Cornerstone does siding and electric - they took care of a tough situation involving 100 year old stucco and electric meter detached from house. Now I have beautiful siding and everything is secure. Great company and great communication thank you!!

Johnathan was extremely Profesional and polite job was completed on time and exceeded expectations

Hard working, communicative and knowledgeable in home renovations . He works diligently with his team to design and complete projects tirelessly, above and beyond expectations. Keep Smiling!!!

Reliable and friendly service. Amazing work. Professional and hard working staff. The owner JT brings excellent work to your home along with an enlightening character you will not forget. highly recommended.

Very fast and reliable.

This business genuinely cares about doing the job right and attention to detail. We needed someone quick to our siding back on the house before the next storm hit and we needed it done right! We had reached out to them and they responded quickly and got it done. They did beautiful work and reattached / secured the siding. You won’t be disappointed by any service you need from this business.

These Guys are Amazing! They Added Electrical separate line In a Snap Now we Enjoy Ac In the Room will use again again Highly Recommend clean no Debris Thanks Jt!

Jonathan is very reliable, dependable and professional. He was very prompt when contacted to do a job. His work is excellent. Would recommend him to family and friends.