Cornerstone Construction is one of the leading providers of services and engineered detention products, furnished and installed, in the United States. We specialize in the manufacture, distribution and installation of institutional detention equipment and products for the jail and prison industries at the federal, state, county, private and local levels.

We strive to offer superior products and services, relying on our years of experience to assist our customers in the most efficient and beneficial way. We are committed to finding ways to surpass our customers’ expectations by purchasing only quality products, furnishing accurate engineering drawings, and providing expert installation. We will always conduct our business with integrity and with awareness of our customers’ needs from the construction process to installation.



  • Doors, Frames & Accessories
  • Detention Locks and Sliding Devices
  • Detention Furniture
  • Hollow Metal Doors & Frames
  • Wall Panel Systems
  • Modular Steel Cells
  • Security Windows & Glass
  • Security Ceilings
  • Kitchen Equipment
  • Lighting Fixtures
  • Plumbing Equipment
  • Guard Towers


  • Design/Build Experience
  • Design Consulting
  • Engineering
  • Custom Fabrication
  • Product Installation
  • Project Management
  • Scheduling
  • Site Selection

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Detention Construction – Detention Equipment Contractor

Limestone Building Group is a wholly owned subsidiary of Cornerstone. As a General Contractor, we can save you time and money on commercial, industrial, and institutional construction projects by managing the design and construction process for you. We offer services in the areas of Budgeting/Consulting, Construction Management, Design-Build, Design-Build-Finance, Owner’s Representation, Program Management, Site Selection, and Traditional Design-Build. Additionally, we can also help you with ongoing Building Maintenance services.