The Keystone Foundation
At Keystone, we’ve built our business upon an idea of being exceptional. We’ve dedicated ourselves to the most minute of details, delivering homes that are nothing short of magnificent. We never settle for anything less than remarkable, and will do whatever it takes to put you in your desired home. From custom trim carpentry work to high-end appliances and windows, we design to even the most discerning of tastes. And with a team that has been in the business for more than 25 years, we feel that we can take on any of your custom-home requests. Primarily, we build our dwellings in Madison County, Illinois. However, due to strong relationships with a reliable crew of subcontractors and lending institutions, we have the flexibility to work in both the Metro-East and the St. Louis markets. Additional to full-home construction, we are available for trim carpentry work and home remodels.