24 CFR §1000.108

Recipients are required to submit proposals to operate model housing activities as defined in section 202(6) of NAHASDA and to provide assistance to non-low-income families in accordance with section 201(b)(2) of NAHASDA. Assistance to non-low-income families must be in accordance with § 1000.110. Proposals may be submitted in the recipient's IHP or at any time by amendment of the IHP, or by special request to HUD at any time. HUD may approve the remainder of an IHP, notwithstanding disapproval of a model activity or assistance to non-low-income families.