DDC uses open Requests for Proposals (RFP) for most of our design and construction management contracts. RFPs are open to all interested firms.RFP Process and FAQs. The Request for Proposals (RFP) is a competitive review process where HPD calls for proposals for new housing and community amenities. To learn more or request a proposal for your property, call us today at 212.634. 8999 or fill out the form below and we will contact you shortly. Applicants must complete and include all Exhibits for submission with the Proposal. The Exhibits for New Construction Projects are on the following pages. All Request for Proposals (RFP) documents for your review will be accessible through PASSPort.