(b) Sites that contain permanent housing units located on a military base undergoing closure or conversion as a result of action pursuant to the Defense Authorization Amendments and Base Closure and Realignment Act (Public Law 100-526), the Defense Base Closure and Realignment Act of 1990 (Public Law 101-510), or any subsequent act requiring the closure or conversion of a military base may be identified as an adequate site if the housing element demonstrates that the housing units will be available for occupancy by households within the planning period of the element. No sites containing housing units scheduled or planned for demolition or conversion to nonresidential uses shall qualify as an adequate site.

Any city, city and county, or county using this subdivision shall address the progress in meeting this section in the reports provided pursuant to paragraph (1) of subdivision (b) of Section 65400.

(c)

1. (1) The Department of Housing and Community Development may allow a city or county to substitute the provision of units for up to 25 percent of the community’s obligation to identify adequate sites for any income category in its housing element pursuant to paragraph (1) of subdivision (c) of Section 65583 where the community includes in its housing element a program committing the local government to provide units in that income category within the city or county that will be made available through the provision of committed assistance during the planning period covered by the element to lower income households at affordable housing costs or affordable rents, as defined in Sections 50052.5 and 50053 of the Health and Safety Code, and which meet the requirements of paragraph (2). Except as otherwise provided in this subdivision, the community may substitute one dwelling unit for one dwelling unit site in the applicable income category. The program shall do all of the following:

   1. (A) Identify the specific, existing sources of committed assistance and dedicate a specific portion of the funds from those sources to the provision of housing pursuant to this subdivision.
   2. (B) Indicate the number of units that will be provided to low-, very low, extremely low, and acutely low income households and demonstrate that the amount of dedicated funds is sufficient to develop the units at affordable housing costs or affordable rents.
   3. (C) Demonstrate that the units meet the requirements of paragraph (2).

2. (2) Only units that comply with subparagraph (A), (B), (C), (D), or (E) qualify for inclusion in the housing element program described in paragraph (1), as follows:

   1. (A) Units that are to be substantially rehabilitated with committed assistance from the city or county and constitute a net increase in the community’s stock of housing affordable to lower income households. For purposes of this subparagraph, a unit is not eligible to be “substantially rehabilitated” unless all of the following requirements are met:

      1. (i) At the time the unit is identified for substantial rehabilitation, (I) the local government has determined that the unit is at imminent risk of loss to the housing stock, (II) the local government has committed to provide relocation assistance pursuant to Chapter 16 (commencing with Section 7260) of Division 7 of Title 1 to any occupants temporarily or permanently displaced by the rehabilitation or code enforcement activity, or the relocation is otherwise provided prior to displacement either as a condition of receivership, or provided by the property owner or the local government pursuant to Article 2.5 (commencing with Section 17975) of Chapter 5 of Part 1.5 of Division 13 of the Health and Safety Code, or as otherwise provided by local ordinance; provided the assistance includes not less than the equivalent of four months’ rent and moving expenses and comparable replacement housing consistent with the moving expenses and comparable replacement housing required pursuant to Section 7260, (III) the local government requires that any displaced occupants will have the right to reoccupy the rehabilitated units, and (IV) the unit has been found by the local government or a court to be unfit for human habitation due to the existence of at least four violations of the conditions listed in subdivisions (a) to (g), inclusive, of Section 17995.3 of the Health and Safety Code.
      2. (ii) The rehabilitated unit will have long-term affordability covenants and restrictions that require the unit to be available to, and occupied by, persons or families of lower income at affordable housing costs for at least 55 years or the time period required by any applicable federal or state law or regulation.
      3. (iii) Prior to initial occupancy after rehabilitation, the local code enforcement agency shall issue a certificate of occupancy indicating compliance with all applicable state and local building code and health and safety code requirements.

   2. (B) Units that are located either on foreclosed property or in a multifamily rental or ownership housing complex of three or more units, are converted with committed assistance from the city or county from nonaffordable to affordable by acquisition of the unit or the purchase of affordability covenants and restrictions for the unit, are not acquired by eminent domain, and constitute a net increase in the community’s stock of housing affordable to lower income households. For purposes of this subparagraph, a unit is not converted by acquisition or the purchase of affordability covenants unless all of the following occur:

      1. (i) The unit is made available for rent at a cost affordable to lower income households.

      2. (ii) At the time the unit is identified for acquisition, the unit is not available at an affordable housing cost to either of the following:

         1. (I) Low-income households, if the unit will be made affordable to low-income households.
         2. (II) Very low, extremely low, or acutely low income households, if the unit will be made affordable to very low income households.
      3. (iii) At the time the unit is identified for acquisition the unit is not occupied by lower income households or if the acquired unit is occupied, the local government has committed to provide relocation assistance prior to displacement, if any, pursuant to Chapter 16 (commencing with Section 7260) of Division 7 of Title 1 to any occupants displaced by the conversion, or the relocation is otherwise provided prior to displacement; provided the assistance includes not less than the equivalent of four months’ rent and moving expenses and comparable replacement housing consistent with the moving expenses and comparable replacement housing required pursuant to Section 7260.
      4. (iv) The unit is in decent, safe, and sanitary condition at the time of occupancy.
      5. (v) The unit has long-term affordability covenants and restrictions that require the unit to be affordable to persons of lower income for not less than 55 years.
      6. (vi) For units located in multifamily ownership housing complexes with three or more units, or on or after January 1, 2015, on foreclosed properties, at least an equal number of new-construction multifamily rental units affordable to lower income households have been constructed in the city or county within the same planning period as the number of ownership units to be converted.

   3. (C) Units that will be preserved at affordable housing costs to persons or families of lower incomes with committed assistance from the city or county by acquisition of the unit or the purchase of affordability covenants for the unit. For purposes of this subparagraph, a unit shall not be deemed preserved unless all of the following occur:

      1. (i) The unit has long-term affordability covenants and restrictions that require the unit to be affordable to, and reserved for occupancy by, persons of the same or a lower income group as the current occupants for a period of at least 55 years.
      2. (ii) The unit is within an “assisted housing development,” as defined in paragraph (3) of subdivision (a) of Section 65863.10.
      3. (iii) The city or county finds, after a public hearing, that the unit is eligible, and is reasonably expected, to change from housing affordable to lower income households to any other use during the next eight years due to termination of subsidy contracts, mortgage prepayment, or expiration of restrictions on use.
      4. (iv) The unit is in decent, safe, and sanitary condition at the time of occupancy.
      5. (v) At the time the unit is identified for preservation it is available at affordable cost to persons or families of low or very low income.

   4. (D) Units in a motel, hotel, or hostel that are converted with committed assistance from the city or county from nonresidential to residential by the acquisition of the unit or the purchase of affordability covenants and restrictions for the unit, are not acquired by eminent domain, and constitute a net increase in the community’s stock of housing affordable to low- and very low income households. For purposes of this subparagraph, a unit is not converted by acquisition or the purchase of affordability covenants unless all of the following occur:

      1. (i) The unit is part of a long-term recovery response to COVID-19.
      2. (ii) The unit is made available for people experiencing homelessness as defined in Section 578.3 of Title 24 of the Code of Federal Regulations.
      3. (iii) The unit is made available for rent at a cost affordable to low- or very low income households.
      4. (iv) The unit is in decent, safe, and sanitary condition at the time of occupancy.
      5. (v) The unit has long-term affordability covenants and restrictions that require the unit to be affordable to persons of low or very low income for not less than 55 years.
      6. (vi) This subparagraph shall remain in effect only for the sixth revision of the housing element pursuant to Section 65588.

   5. (E) All spaces in a mobilehome park, as defined in subdivision (a) of Section 18214 of the Health and Safety Code, that is acquired with committed assistance from the city or county where any of the following apply:

      1. (i) The mobilehome park will be acquired with financing that includes a loan from the department pursuant to Section 50783 or 50784.5 of the Health and Safety Code.

      2. (ii) At least 50 percent of the current residents in the mobilehome park to be acquired are lower income households and the entity acquiring the park agrees to enter into a regulatory agreement for a minimum of 55 years that requires both of the following:

         1. (I) All vacant spaces shall be rented at a space rent that does not exceed 50 percent of maximum rent limits established by the California Tax Credit Allocation Committee at 60 percent of the area median income.
         2. (II) The space rent for existing residents at the time of the acquisition of the property, both during the 12 months preceding the acquisition and during the term of the regulatory agreement, shall not increase more than 5 percent in any 12-month period.
3. (3) This subdivision does not apply to any city or county that, during the current or immediately prior planning period, as defined by Section 65588, has not met any of its share of the regional need for affordable housing, as defined in Section 65584, for low- and very low income households. A city or county shall document for any housing unit that a building permit has been issued and all development and permit fees have been paid or the unit is eligible to be lawfully occupied.
4. (4) For purposes of this subdivision, “committed assistance” means that the city or county enters into a legally enforceable agreement during the period from the beginning of the projection period until the end of the third year of the planning period that obligates sufficient available funds or other in-kind services to provide the assistance necessary to make the identified units affordable and that requires that the units be made available for occupancy within two years of the execution of the agreement. “Committed assistance” does not include tenant-based rental assistance.
5. (5) For purposes of this subdivision, “net increase” includes only housing units provided committed assistance pursuant to subparagraph (A) or (B) of paragraph (2) in the current planning period, as defined in Section 65588, that were not provided committed assistance in the immediately prior planning period.
6. (6) For purposes of this subdivision, “the time the unit is identified” means the earliest time when any city or county agent, acting on behalf of a public entity, has proposed in writing or has proposed orally or in writing to the property owner, that the unit be considered for substantial rehabilitation, acquisition, or preservation.
7. (7) In the fourth year of the planning period, as defined by Section 65588, in the report required pursuant to Section 65400, each city or county that has included in its housing element a program to provide units pursuant to subparagraph (A), (B), (C), (D), or (E) of paragraph (2) shall report in writing to the legislative body, and to the department within 30 days of making its report to the legislative body, on its progress in providing units pursuant to this subdivision. The report shall identify the specific units for which committed assistance has been provided or which have been made available to lower income households, and it shall adequately document how each unit complies with this subdivision. If, by the end of the third year of the planning period, the city or county has not entered into an enforceable agreement of committed assistance for all units specified in the programs adopted pursuant to subparagraph (A), (B), (C), (D), or (E) of paragraph (2), the city or county shall, not later than the end of the fourth year of the planning period, adopt an amended housing element in accordance with Section 65585, identifying additional adequate sites pursuant to paragraph (1) of subdivision (c) of Section 65583 sufficient to accommodate the number of units for which committed assistance was not provided. If a city or county does not amend its housing element to identify adequate sites to address any shortfall, or fails to complete the rehabilitation, acquisition, purchase of affordability covenants, or the preservation of any housing unit within two years after committed assistance was provided to that unit, it shall be prohibited from identifying units pursuant to subparagraph (A), (B), (C), (D), or (E) of paragraph (2) in the housing element that it adopts for the next planning period, as defined in Section 65588, above the number of units actually provided or preserved due to committed assistance.