Need Chicago Contractor Roof Deck & Access

[Mark Ainley]

Morning, we have a top floor condo in the loop that has roof rights and we want to create access(stairs of some sort) to a roof top room that we want to add.  This has been a project we have wanted to do for years but just not easily knowing the right person for the job it has been kicked down the road.  Our goal is to have construction complete for summer.  

Anyone that can refer me a company/contractor in Chicago that can do this type of scope on a 12 story building is appreciated.