Wake County, North Carolina ("The County") and Raleigh, North Carolina ("The City"). This article describes what a Request for Proposal (RFP) is and how to compose and evaluate an RFP for construction services and suppliers.Wake County Procurement Services strives to provide all vendors an opportunity to bid on items and services that the County needs. How to Search for Bids. Thank you for your interest in the Wake County Public School System. Please review the following instructions prior to submitting your proposal.