A construction proposal is a document used to provide a client with a clear understanding of a project's details. Contractors wanting to bid on items included in a particular letting must submit the properly completed "Request for.Renovation and reactivation of a 1,456seat, historic theater. Chicago Western Suburb, Illinois. To be considered eligible to submit a Proposal to the Client, Architect shall be legally licensed under the applicable laws of the State of Illinois. Blue Island, IL 60406. Subject: Proposal for City Hall Exterior Building Renovation.