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.For most projects, we recommend requesting proposals and making your selection to bring on a construction firm well before design is complete. The County's objective is to use this contract to complete small to mediumsized projects in a timely manner. RFP- Request for Proposals. 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.