; and (III) reduce gross rent requirements. (B) Uses The special housing account established under subparagraph (A) may be used— (i) to provide services to residents of the housing or funds set aside for replacement reserves; or (ii) for such other purposes as determined by the Secretary. (9) Design flexibility The Secretary shall, to the extent practicable, give owners the flexibility to design housing appropriate to their location and proposed resident population within broadly defined parameters. (10) Use of funds from other sources An owner shall be permitted voluntarily to provide funds from sources other than this section for amenities and other features of appropriate design and construction suitable for supportive housing under this section if the cost of such amenities is— (A) not financed with the advance; and (B) is not taken into account in determining the amount of Federal assistance or of the rent contribution of tenants. (j) Tenant selection (1) In general An owner shall adopt written tenant selection procedures that are— (A) satisfactory to the Secretary and which are— (i) consistent with the purpose of improving housing opportunities for very low-income veteran families; and (ii) reasonably related to program eligibility and an applicant's ability to perform the obligations of the lease