Connecticut Open End Mortgage Deed And Security Agreement is a type of mortgage deed that grants a lender a security interest in a mortgagor's real property in order to secure the repayment of a loan. This type of deed is commonly used in Connecticut and involves the mortgagor granting a lien on the property, with the lender taking a security interest in the property. The property is held as security for the loan and, in the event of default, the lender can foreclose on the property. There are two types of Connecticut Open End Mortgage Deed And Security Agreement: Single Family Mortgage Deed and Multi-Family Mortgage Deed. The Single Family Mortgage Deed is used when the mortgagor has one single family home as collateral and the Multi-Family Mortgage Deed is used when the mortgagor has multiple units in one building or multiple buildings as collateral.