Individual tax map sections may be purchased from the Real Property Tax Service Agency by visiting their office in Riverhead or they can be ordered through the mail by writing Real Property Tax Service Agency, 300 Center Drive, Riverhead, New York 11901-3398. Include the District and the Section Number of the section you want along with a check for map and postage. See: Real Property Tax Service Agency Tax Map Products below. In addition, note other products and services available at Real Property.