; and (II) such high vacancy rate within the market area is expected to continue for the next 5 years or longer. 309. Other program requirements (a) Fair housing The demolition or disposition, relocation, replacement, and re-occupancy of housing units in connection with a grant under this title shall be carried out in a manner that affirmatively furthers fair housing, as required by section 808 of the Civil Rights Act of 1968 ( 42 U.S.C. 3608(e) ). Grantees shall adopt affirmative marketing procedures, and require affirmative marketing activities of project owners and managers. Such special outreach efforts shall be targeted to those who are least likely to apply for the housing, to ensure that all persons regardless of their race, color, national origin, religion, sex, disability, or familial status are aware of the housing opportunities in each project funded with a grant under this title. (b) Accessibility requirements All new construction and alterations of existing buildings carried out in connection with a grant under this title shall comply with the requirements of the section 504 of Rehabilitation Act of 1973 ( 29 U.S.C. 794 ), the Accessibility Standards for Design, Construction, and Alteration of Publicly Owned Residential Structures of the Department of Housing and Urban Development (24 C.F.R. part 40), the Fair Housing Act ( 42 U.S.C. 3601 et seq.), and any other requirements as determined by the Secretary. (c) Affordability requirement Amounts from a grant under this title may not be used for assistance for any housing property unless the owner of the property assisted agrees to a period of affordability for the property which shall be not shorter than the period of affordability to which the property is already subject and remains subject, or 20 years, whichever is longer. (d) Cost limits Subject to the provisions of this title, the Secretary shall establish cost limits on eligible activities under this title sufficient to provide for effective transformation programs. (e) Environmental review For