Download application forms for accounts and services, get information about credit union fees and more from Suffolk Credit Union in NY. Explore online. Suffolk County Satisfaction of Mortgage Form.Fill in the blank form formatted to comply with all recording and content requirements. The real property being transferred is presently subject to an outstanding credit line mortgage. However, no tax is due for the following reason: a. YES ______ or NO ______. Suffolk County Discharge of Mortgage Form. Suffolk County Discharge of Mortgage Form. Fill in the blank form formatted to comply with all recording and content requirements. Request installment payment agreement. Individuals.