Program is encouraged to consult with a local project sponsor receiving amounts under the continuum of care program under subtitle C of title IV of the McKinney-Vento Homeless Assistance Act ( 42 U.S.C. 11381 et seq. ). (f) Definitions In this section: (1) Eligible building The term eligible building means a building that the Secretary, in coordination with the Administrator of General Services, determines is unused or underutilized and suitable for residential development. (2) Qualified residential rental project The term qualified residential rental project means any project for residential rental property that at all times for the period that is not less than 30 years, or the minimum period that a State or unit of local government decides that is not less than 30 years, meets the following requirements: (A) The project requires that— (i) 20 percent or more of the residential units in such project are occupied by a household with an income that does not exceed 50 percent of the median income for the area