We had an electrical issue which was resolved quickly and expertly. Paul was friendly, courteous and knowledgeable! This was our second experience with Cornerstone, and we're hooked!

Had a new boiler installed on Dec 24 for 20k...ouch. the tech was great but they kept hounding me to leave an extended review, I didn't. Aug 1 2025 had to have boiler serviced as it wouldn't make hot

I had them come out to our home to quote and service our gutters. I had 3 quotes all around $325. Cornerstone quoted me $1280. i don't need to say anything else about their prices!