You are required to have the City of Charlotte Approved Plans (Green Stamp) on site at all times. Mecklenburg County Building.Proposals shall address all the questions and requirements of the RFP in the order and format specified in Section 12.0. In this blog, we will teach you how to write an effective construction proposal that stands out from the competition. The requirements for submitting a Proposal are stated in the attached Request for Proposals (the "RFP"). Please review them carefully. What is a construction proposal? What to include in a construction proposal. PROPOSAL FOR THE CONSTRUCTION OF. CONTRACT No. C204966 IN MECKLENBURG COUNTY, NORTH CAROLINA.