home mortgage
(5) The term “home mortgage” means a mortgage upon real estate, in fee simple, or on a leasehold (1) under a lease for not less than ninety-nine years which is renewable or (2) under a lease having a period of not less than fifty years to run from the date the mortgage was executed, upon which is located, or which comprises or includes, one or more homes or other dwelling units, all of which may be defined by the Director and shall include, in addition to first mortgages, such classes of first liens as are commonly given to secure advances on real estate by institutions authorized under this chapter to become members, under the laws of the State in which the real estate is located, together with the credit instruments, if any, secured thereby.