For Cornerstone CEO Ron Carnwath, general contracting is a family tradition. Ron learned everything there is to know about the business from his father and grandfather in the 1990s. He learned enough that in 2001, Ron felt convicted to hang a shingle of his own. He founded Cornerstone with an original focus on residential remodeling and general contracting. Sensing a larger opportunity, he switched the company's focus to commercial construction in 2004. The rest, as they say, is history. More than 15 years later, Cornerstone has emerged as one of the most trusted facilities maintenance companies in the Midwest. We've assembled a proven team of builders and craftsmen with decades of experience. We are licensed and insured as a full-service construction company. Founded in Rochester, MI, Cornerstone has since expanded its footprint to other parts of the region, including Midwest, Northeast and Atlantic Regions. Our growth is a credit to our work and customer service. Customers know they can count on us to operate with the same level of care and diligence as we would if we were working on our own businesses.