Cornerstone Building Corp
720 4th Street
Watervliet, NY 12189

Welcome to CornerStone Building

CornerStone Building Corp. is a construction company that has proudly been serving the Capital District and Northeast for over 10 years. We have built our reputation on service and expertise, setting the standard in providing the best value to our commercial and residential clients. With a strong foundation in providing a full range of real estate and construction services we have the versatility to handle projects of varying scope, schedule, and budget.

As a vertically integrated company, we have the capability to handle every aspect of your project from site acquisition and sale through construction and property management. Our broad range of services organized into eight core areas:




"I was very impressed with their (CornerStone’s) ability to coordinate the various teams and organizations that are vital to planning, building, and executing my project. It was clear from the beginning, my building would be on time, but having it be under budget was the added bonus."

Cornerstone Client, Residential, Rexford, NY


"Opening ahead of schedule and thousands of dollars under budget seems to be an unheard of experience. I honestly thought CornerStone made a mistake, does a construction company really invoice less than the agreed upon price? CornerStone is not only a professional group, they are unbelievably honest."

Cornerstone Client, Commercial Business, Colonie, NY