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Size: 20-49 Employees
Annual Vol: Undisclosed
LEED Experience BIM Experience

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OnSite Construction Services, Inc. (OCSI) is a privately-owned corporation based in Chicago with offices in Lynwood Illinois and Chesterton Indiana. 


 OCSI specializes in cast in place concrete, both Structural and Non-Structural. We are Chicagoland's premier source for complete concrete services. Our staff can handle all aspects of concrete, such as reinforced concrete, walls, floors, retaining wall systems, and flatwork and paving.  We also offer carbon fiber epoxy concrete repair with D.O.T. approved products. We are also one of the only companies in the Chicago area that offer Place and Finish only services to both the high rise and commercial construction industries. We have gathered some of the industries brightest men and women to create a group that is capable of completing even the most complex concrete projects. With a primary focus on the quality of our work our field staff is highly trained in the latest concrete forming, and place & finish practices. With a safety plan that is constantly evolving Onsite will insure constant compliance to all OSHA standards while maintaining superior quality and reliable speed on all projects.


Our selective demolition teams are led by highly trained crew leaders for a fast clean and safe deconstruction of your project. Even with some of the most competitive prices in Chicago's construction industry our speed and quality are rarely matched by any of our competitors. With safety being our first concern, all of our field employees complete the OSHA 10 class and take yearly refresher classes, all of our field superintendents have extensive safety training as well as first aid training. Working in schools, stores, and office building in Chicago's Loop has prepared our staff to work quietly, safely, and clean in all types of occupied structures with little to no impact on the building occupants or other tradesmen.      


At Onsite we strive to provide competitive pricing and flexible scheduling for our clients Our cleaning crews are fast professional and will work around any unique conditions your site has to offer. We offer pre & post construction cleaning and progress cleanings. We do commercial, industrial, healthcare, multi-family projects as well as accidents, crime scene, natural disaster, fire, flood, and event cleanings. We offer weekly, monthly office cleaning and retail floor cleaning and polishing at competitive prices. All of the cleaning products used are low VOC and environmentally friendly.


What We Do

Products/Services Relating to Concrete Contrs.--Sidewalks/Floors/Flat
Products/Services Relating to Demolition Contractors
Products/Services Relating to Post Construction Clean Up

Project Experience

Project Types:
New Alterations/Renovations Interior Fit-Ups Service Work/Repairs
Project Size:
Up to $1,000,000

Service Areas