You will be prompted to either upload your existing Rent Rolls or fill in the appropriate data on the County form at the end of the application process. Complete all requested information.Nassau County Procurement and Contracts Management Department (PCM) functions as the central hub for purchasing and contracts management activities. The forms in this packet are free. You should read the "Landlord's. The Nassau County Clerk's Office preserves and protects land records and provides a wide range of services to the public in a professional and courteous manner.