The property and improvements which the Seller is agreeing to sell and which the Purchaser is agreeing to purchase is known as. Learn how to thoroughly understand and articulate each line of the contract so that you can fill them out and use them in your transactions with confidence.No information is available for this page. We Buy Houses on Long Island for Cash. Welcome to the Nassau County Blanket Purchase Order Contract (BPNC) search. We Buy Houses on Long Island for Cash. 14 of 1972 of the County of Nassau and the actual MSBA agreement. Arising out of or construing this Agreement shall lie in the state courts for Nassau County, Florida. Nassau may add, substitute or discontinue indexed accounts in the future. 10. Please fill out all fields.