45 Montreal Street | Portland, ME (Copy)

RESIDENTIAL & COMMERCIAL

As design professionals, general contractors and builders, we provide a full spectrum of design, building, restoration, and renovation services throughout Maine. From ground-up construction of high-tech commercial spaces and modern condos, to full scale historic restorations and construction of the finest residential buildings, we provide unparalleled service and results.

 

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Testimonials

After 33 years of living in our house, the experience with CornerStone cannot be surpassed. We look forward to our next renovation with you.
— Claire, Portland, Maine
I was a nervous renovator because of timing and budget - I got this project started right in time for the Holidays... Well, not only did CornerStone deliver on timing, they came in on budget and did an amazing job. My kitchen came out exactly as I had dreamed.
— C. Kast, South Portland, Maine
We could not be more pleased with the process and the results made possible by CornerStone. The staff have been great communicators: answering calls and questions 24/7, providing sound advice and direction, and emailing photos to us on a regular basis since we couldn’t be there in person... There is nothing the staff at CornerStone wouldn’t have done for us to get the project done how we wanted and when we wanted.
— Gary & Karen Preston, Portland, Maine
CornerStone was great to work with. They were willing to accommodate everything we wanted to do on our project (expanding the ½ bath), but most impressively they were the exact opposite of what most contracting situations end up being. We could reach them whenever we wanted, they were very responsive, on-time and honest. There was one sub-contractor (plumber) who did not meet CornerStone’s high standards, and those demanded by the project, so they were able to bring in a different one on very short notice, who did a great job. Despite our home being built 135 years ago, the project ended up not hitting the anticipated bumps in the road. So when all was said and done, the project came in under the estimated amount, which was another very nice surprise.
— Tim & Rebecca Portland, Maine
“I wanted to take a moment to tell you how much I appreciate Cary. I just can’t say enough about how rare it is to find a project manager like him - he is so thorough, kind, communicative, present, talented, and on top of things! He is trustworthy and delivers what he says he is going to do and I never doubt he has my best interest in mind. I’ve honestly never had such a good experience professionally or personally.”
— Johanna C. Portland, Maine
 

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