Where We Work
Serving the Greater St. Louis Metro
From our home base in O'Fallon, Cornerstone General Contractors serves communities across Missouri and Illinois. One crew, every trade, one contract accountable to the finish. Whether it's storm restoration, a commercial buildout, or routine maintenance, we bring the same standard to every job site below.
Missouri Service Areas
St. Louis County
Missouri
- St. Louis
- Kirkwood
- Chesterfield
- Ballwin
- Florissant
- Webster Groves
- Clayton
- Creve Coeur
- Maryland Heights
- Hazelwood
- University City
- Overland
- Bridgeton
- Manchester
- Ladue
- Town and Country
- Des Peres
- Wildwood
- Ellisville
- Fenton
- Oakville
- Mehlville
- Affton
- Crestwood
- Sunset Hills
- Brentwood
- Richmond Heights
- Maplewood
- Ferguson
St. Charles County
Missouri
- St. Charles
- O'Fallon
- St. Peters
- Wentzville
- Lake Saint Louis
- Cottleville
- Dardenne Prairie
- Weldon Spring
- St. Paul
- Augusta
- New Melle
- Portage Des Sioux
Jefferson County
Missouri
- Arnold
- Festus
- Imperial
- Hillsboro
- De Soto
- Crystal City
- Herculaneum
- Pevely
- High Ridge
- House Springs
- Cedar Hill
- Barnhart
Franklin County
Missouri
- Washington
- Union
- Pacific
- Sullivan
- St. Clair
- New Haven
- Villa Ridge
- Gerald
Lincoln County
Missouri
- Troy
- Moscow Mills
- Elsberry
- Winfield
- Hawk Point
- Foley
Warren County
Missouri
- Warrenton
- Wright City
- Marthasville
- Truesdale
Illinois Service Areas
St. Clair County
Illinois
- Belleville
- O'Fallon
- Fairview Heights
- Swansea
- Shiloh
- Mascoutah
- Millstadt
- Cahokia Heights
Madison County
Illinois
- Edwardsville
- Alton
- Granite City
- Collinsville
- Troy
- Glen Carbon
- Highland
- Wood River
- Bethalto
- Maryville
Monroe County
Illinois
- Columbia
- Waterloo
- Valmeyer
Don't see your town listed?
Our service area is always growing. If you're in or near the greater St. Louis region, there's a good chance we can help. Give us a call or request a free estimate — we'll let you know right away.
Ready to Start Your Project?
Contact us today for a free consultation and detailed quote. Our team is ready to bring your vision to life.
24/7 Emergency Services: 314-916-6337