; (2) whether the address is in a registered historic district (as that term is defined in section 47(c)(3)(B) of the Internal Revenue Code of 1986), is listed on the National Register of Historic Places, is designated as a National Historic Landmark, or is of historic value; and (3) population density and the concentration of poverty. (g) Waiver for physical hardship (1) In general The Postal Service shall establish and maintain a waiver program under which, upon application, door delivery may be continued, or provided, for a delivery point identified under subsection (d)(1) or (e)(1) at no cost to the applicant in any case in which— (A) centralized delivery, curbside delivery, or sidewalk delivery would, but for this paragraph, otherwise be the primary mode of mail delivery; and (B) door delivery is necessary in order to avoid causing significant physical hardship or physical safety risks to a postal patron. (2) Treatment of waiver An address receiving door delivery pursuant to a waiver under this subsection— (A) shall be counted, for purposes of the reporting requirement under subsection (j), as an address that receives the primary mode of mail delivery which the address would be subject to if not for the waiver; and (B) shall, not later than 60 days after ceasing to meet the requirements of paragraph (1), be converted to the primary mode of mail delivery which is otherwise applicable. (h) Procedures In carrying out conversions under this section, the Postal Service shall establish procedures to— (1) solicit, consider, and respond to input from the general public, postal patrons, State and local governments, local associations, and property owners; (2) calculate and make publicly accessible the cost or savings of the conversion to the Postal Service as well as the average conversion cost or savings to each postal patron and any cost or savings to the State and local government