The City of Houston, as well as other public agencies, solicits bids from businesses for various goods and services. Complete and sign the Bid Form a.Your bid must be equal to or greater than the minimum bid. 2. This page provides links current solicitations that may lead to prime or subcontracting opportunities. There is no cost to register as a supplier. Below you will find current bid proposals for Houston ISD. Click on the proposal name to get more information and to download relevant supporting documents. Looking to do business with METRO? View business opportunity programs, along with current and anticipated procurement opportunities in the coming months. Houston First Corporation requests bids and proposals regularly for a variety of services and improvements across our portfolio of properties.