; and (2) shall take all possible measures to expedite construction of housing described in paragraph (1). (f) Priority for occupancy in dwelling units (1) First 2 fiscal years During the first 2 fiscal years for which amounts are made available to carry out this section, the Secretary shall ensure that priority for occupancy in a dwelling unit that receives assistance under this section is given to a homeless family or homeless youth. (2) Subsequent 3 fiscal years During the third, fourth, and fifth fiscal years for which amounts are made available to carry out this section, the Secretary shall ensure that priority for occupancy in a dwelling unit that receives assistance under this section is given to a homeless family or homeless individual. 113. Modular construction pilot program (a) Definitions In this section: (1) Eligible entity The term eligible entity means a public housing agency, a tribally designated housing entity (as defined in section 4 of the Native American Housing Assistance and Self Determination Act of 1996 ( 25 U.S.C. 4103 )), a nonprofit entity, a company, a religious entity, or a unit of local or Tribal government. (2) Modular construction The term modular construction means the method of residential construction by which building modules are constructed off of the future site of a building, then brought together on the building site to form a larger residential building, in an effort to reduce construction costs. (3) Secretary The term Secretary means the Secretary of Housing and Urban Development. (b) Establishment of program (1) In general The Secretary shall establish a pilot program to provide grants to eligible entities to promote the construction of affordable housing using modular construction. (2) Affordability requirement To be eligible to receive a grant under paragraph (1), an eligible entity shall be required to guarantee affordability for a period of more than 20 years. (3) Priority In awarding grants under paragraph (1), the Secretary shall give priority to an eligible entity