Keystone Builders, Inc. began in 1977 with little more than two employees and a dream. Today, Keystone is a premium builder operating in the Capital District of New York and its southern environs with many successful projects to its credit and a large roster of satisfied customers. With little or no advertising, Keystone believes that our solid reputation has been “built by word of mouth” because the source of our next customer is oftentimes one of our former homeowners. We are justifiably proud of the growth our company has experienced during the last quarter century. We now provide a full excavation and foundation service so that we can take your project from its very first step all the way to completion.