How do I bid on a City of Dallas contract? For information on the bidding process, please contact the City of Dallas Procurement Services at: (214) 670-3326.City of Dallas, TX , TX is looking to buy goods and services. Discover all bid opportunities, RFPs, and government contracts with City of Dallas, TX. Dallas County's Open and Closed Solicitations are posted below. Please register or login to see details of all open opportunities. How do I fill out an Online BidTable? Bid documents are located below. If you are looking to work with DHA and are responding to an Invitation to Bid, Request for Proposal, or Request for Qualifications, you're in the right place. Broughton This webinar walks through an actual Dallas ISD RFP.