In this chapter:

(1)  Excess property.⁠—The term “excess property” means any postal property that the Postal Service determines is not required to meet the needs or responsibilities of the Postal Service.

(2)  Postal property.⁠—The term “postal property” means any property owned or leased by the Postal Service.

(3)  Underutilized property.⁠—The term “underutilized property” means a portion or the entirety of any real property that is postal property, including any improvements, that is used⁠—

(A)  irregularly or intermittently by the Postal Service for program purposes of the Postal Service; or

(B)  for program purposes that can be satisfied only with a portion of the property.