How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.Here you can find out about business opportunities, permits, records request, and real estate services. The Bid shall contain an acknowledgement of receipt of all Addenda (the numbers of which must be filled in the Bid Form). 10.8. Development Services provides the City Council and community with creative guidance and effective implementation of land use development. The bid or Request for Proposal will be designed to be competitively bid following all MCCCD Purchasing guidelines and allowing maximum competition. Open Book to be used with general contractors bidding out multiple subcontractors. General contractors should use this method of pricing. Maricopa County's Open and Closed Solicitations are posted below. Please register or login to see details of all open opportunities.