(a) All bidders on construction contracts shall complete and submit, along with and as part of their bids, a Bidder's. Your construction bid should be formatted formally.Below is a list of forms and information that may be required to complete a Request for Proposal Response. This a SAMPLE version of the Public Building Commission of Chicago's (PBC) agreement for design-bid-build construction projects. The quantities appearing in the bid schedule are approximate and are prepared for the comparison of bids. The Bidder's Package includes the following Information for your use in Preparation of your Bid Package Proposal.