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We are...

Chicago's premiere Design Build General Contractor

 With over 600 Buildings in greater Chicago and 50 years of experience, IBSI is your preferred partner in your new construction or expansion project.  We can take your building from conception to reality with our team of designers, engineers, and project managers. 

Building On our Reputation

Our Team

 With Ron Kotecki's start of the company in 1971, he's built a team of construction professionals with a clear focus on delivering quality in every step of the building timeline.  Four of the family members are in the business and have degrees from Purdue University - Boiler Up!! 

Our Philosophy

 Our mission is to continually improve our design techniques and construction management to satisfy our customers' requirement 100% of the time in line with our contractual responsibility and to achieve sufficient return on our investment to enable us to prosper as a company through being a credit to truth in our industry.   

Our Expertise

 Offering a full range of construction services including:

  • Furnish and Erect or Furnish Material Only
  • Semi-Turnkey & Full Turnkey Scopes
  • Architectural and Civil Engineering Services
  • Shorter build times for quicker occupancy
  • Custom designed structures
  • In-House design from Concept to Completion

Our Services

Full Service Design

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We'll make your site a real sight by taking your raw ideas & generating concept drawings to confirm your vision.  These can also be used to discuss with the municipality your plan & determine if they align with your city's requirements.

Full Turnkey Solutions

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No matter the type of construction, we can see it from the 1st shovel to completion.  We are a certified NUCOR builder, so let us know how to use a Pre-enginered framing system to build economically while achieving your desired architectrual look.

Full partner in the process

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Be involved in the entire construction process without having to be the arbitrator between the Architect & the Contractor.  We partner with you and utilize our long history with our Subs & Designers to get you the perfect project on time in in budget!

Authorized Dealer

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Contact Us

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Integrated Building Systems, Inc

419 Plaza Drive, Westmont, Illinois 60559

(630) 986-1448