Provides that the term "mortgage" shall also include a loan owed to a bank secured by a second lien on a fee simple or leasehold estate in real property located in the state and improved by a residential structure, whether or not insured or guaranteed by the United States of America or any agency thereof, provided, however, that such second lien secures a loan purchased by the agency and is made at the same time as a first lien securing a loan purchased by the agency.
