Client reviews and stories

At Cornerstone Construction Masonry plus+, we never rush a job just to check it off the list. Every project—from foundational concrete and custom stonemasonry to full framing—is completed with genuine care and meticulous attention to detail. Discover what homeowners across Theresa, NY, and throughout Jefferson County have to say about working with us.

"There are plenty of contractors in our area, but the level of pride and precision brought to our custom stone fireplace made all the difference. True craftsmanship from start to finish."

Elena M. – Homeowner in Northern NY

"The stone patio and retaining wall turned out even better than we imagined. You can instantly tell they care about the smallest details instead of rushing through the job."

Mark D., Theresa, NY

"From the solid concrete foundation to the framing of our home addition, the craftsmanship was top-notch. Reliable, honest, and truly skilled at what they do."

Sarah & Tom K., Jefferson County

"We hired them for custom brickwork and minor structural repairs. Even on smaller tasks, the dedication and precision were unmatched. Highly recommended!"

David R., Alexandria Bay