A public housing agency may not, in complying with the requirements under paragraph (2), concentrate very low-income families (or other families with relatively low incomes) in public housing dwelling units in certain public housing projects or certain buildings within projects. The Secretary shall review the income and occupancy characteristics of the public housing projects and the buildings of such projects of such agencies to ensure compliance with the provisions of this paragraph and paragraph (2).
A public housing agency shall submit with its annual public housing agency plan under section 1437c–1 of this title an admissions policy designed to provide for deconcentration of poverty and income-mixing by bringing higher income tenants into lower income projects and lower income tenants into higher income projects. This clause may not be construed to impose or require any specific income or racial quotas for any project or projects.
In implementing the policy under clause (i), a public housing agency may offer incentives for eligible families having higher incomes to occupy dwelling unit in projects predominantly occupied by eligible families having lower incomes, and provide for occupancy of eligible families having lower incomes in projects predominantly occupied by eligible families having higher incomes.
Incentives referred to in clause (ii) may be made available by a public housing agency only in a manner that allows for the eligible family to have the sole discretion in determining whether to accept the incentive and an agency may not take any adverse action toward any eligible family for choosing not to accept an incentive and occupancy of a project described in clause (i)(II), Provided, That the skipping of a family on a waiting list to reach another family to implement the policy under clause (i) shall not be considered an adverse action. An agency implementing an admissions policy under this subparagraph shall implement the policy in a manner that does not prevent or interfere with the use of site-based waiting lists authorized under section 1437d(s)  of this title.
Except as provided under subparagraph (D), the number of public housing dwelling units that a public housing agency shall otherwise make available in accordance with paragraph (2)(A) to comply with the percentage requirement under such paragraph for a fiscal year shall be reduced by the credit number for the agency under subparagraph (B).
Notwithstanding any authority under subparagraph (A), of the public housing dwelling units of a public housing agency made available for occupancy in any fiscal year by eligible families, not less than 30 percent shall be occupied by families whose incomes at the time of commencement of occupancy do not exceed 30 percent of the area median income, as determined by the Secretary with adjustments for smaller and larger families.
In the case of any family residing in a dwelling unit of public housing whose income for a year has exceeded the applicable income limitation under subparagraph (C), upon the conclusion of such year the public housing agency shall provide written notice to such family of the requirements under subparagraph (A).
The income limitation under this subparagraph shall be 120 percent of the median income for the area, as determined by the Secretary with adjustments for smaller and larger families, except that the Secretary may establish income limitations higher or lower than 120 percent of such median income on the basis of the Secretary’s findings that such variations are necessary because of prevailing levels of construction costs, or unusually high or low family incomes, vacancy rates, or rental costs.
Not more than 25 percent of the dwelling units that were available for occupancy under section 8 [42 U.S.C. 1437f] housing assistance payments contracts under this chapter before October 1, 1981, and which will be leased on or after October 1, 1981, shall be available for leasing by low-income families other than very low-income families.
In developing admission procedures implementing paragraphs (1), (2), and (3), the Secretary shall prohibit project owners from selecting families for residence in an order different from the order on the waiting list for the purpose of selecting relatively higher income families for residence. Nothing in this paragraph or this subsection may be construed to prevent an owner of housing assisted under a contract for project-based assistance from establishing a preference for occupancy in such housing for families containing a member who is employed.
For purposes of this subsection, the term “net family assets” means, for all members of the household, the net cash value of all assets after deducting reasonable costs that would be incurred in disposing of real property, savings, stocks, bonds, and other forms of capital investment. Such term does not include interests in Indian trust land, equity in property for which the family is receiving assistance under subsection (y) or (o)(12) of section 1437f of this title, equity accounts in homeownership programs of the Department of Housing and Urban Development, or Family Self Sufficiency accounts.
In cases in which a trust fund has been established and the trust is not revocable by, or under the control of, any member of the family or household, the value of the trust fund shall not be considered an asset of a family if the fund continues to be held in trust. Any income distributed from the trust fund shall be considered income for purposes of section 1437a(b) of this title and any calculations of annual family income, except in the case of medical expenses for a minor.
A public housing agency or owner may determine the net assets of a family, for purposes of this section, based on a certification by the family that the net assets of such family do not exceed $50,000, as such amount is adjusted annually by applying an inflationary factor as the Secretary considers appropriate.
The Secretary may develop standardized forms for the certifications referred to in subparagraphs (A) and (B).
When recertifying family income with respect to families residing in public housing dwelling units, a public housing agency may, in the discretion of the agency and only pursuant to a policy that is set forth in the public housing agency plan under section 1437c–1 of this title for the agency, choose not to enforce the limitation under paragraph (1).
When recertifying the income of a family residing in a dwelling unit assisted under this chapter, a public housing agency or owner may choose not to enforce the limitation under paragraph (1) or may establish exceptions to such limitation based on eligibility criteria, but only pursuant to a policy that is set forth in the public housing agency plan under section 1437c–1 of this title for the agency or under a policy adopted by the owner. Eligibility criteria for establishing exceptions may provide for separate treatment based on family type and may be based on different factors, such as age, disability, income, the ability of the family to find suitable alternative housing, and whether supportive services are being provided.