Government work


View/Print the Capability Statement

You Name It, We Clean It, We Fit It or We Restore It…


Diamond 7 Commercial Janitorial is an award-winning woman-owned commercial janitorial company that has served the Chicago, Waukegan, and the Indiana areas for over 30 years by focusing on outstanding service and employing a high-quality workforce.
We’re experienced in a variety of industries, including government facilities, schools, warehouses, and healthcare facilities. Also, we provide construction cleaning, and stonework (granite, limestone, marble, terrazzo and vct tile).


  • Economically Disadvantaged Woman-Owned Small Business
  • Self-Certified Small Disadvantaged Business


• Janitorial Services – 30 yrs of experience serving the private sector. We continually show our clients how to cut costs all the while providing a high level of cleanliness that meets or exceeds your expectations. We clean any size space using industry best practices and state-of-the-art equipment. We clean any type of space government facilities, schools, hospitals, warehouses, and healthcare. as well as perform post-construction cleanup

• Government Cleared Employees – As well as non-cleared employees. All staff are put through extensive background checks before any work begins, we’re totally transparency


  • 100% Woman-Owned
  • 25 years’ experience bidding/managing service contract & prevailing wage contracts
  • Expert: LEED standard green cleaning requirements


  • Post Construction Clean-up
  • Painting
  • Plumbing
  • Medical facilities
  • Schools
  • Museum
  • Offices

      • Self-certified Women Owned
      • Self-certified minority Owned
        • PAST CLIENTS

          • DuSable Museum
          • Chicago Public Schools
          • ComEd – An Exelon Company
          • United States Post Office
          • Dusable Museum
            • NAICS CODES

              • Janitorial-561720
              • Job training-624310
              • Electric 335110
              • Painting- 238320
              • Plumbing-238220
              • Floor care-238330
              • Construction cleanup 5617190
              • Mis construction supplies 238140
              • Stonework- 327991
              • Facilities Support Services – 561730
              • Landscaping Services – 561740
              • Carpet & Upholstery Cleaning – 561790
              • Other Services to Buildings & Dwellings – F021
              • Housekeeping – Custodial Janitorial S208
              • Landscaping/Groundskeeping S214
              • Housekeeping – Facilities Operations Support – S216