Cal. Health and Safety Code § 33413.1

(a) For only the Mt. Eden Sub-Area of the Eden Redevelopment Project Area, the Redevelopment Agency of the County of Alameda may count, towards satisfaction of the housing production requirements of subdivision (b) of Section 33413, the construction of units outside the project area but within the City of Hayward if all of the following conditions are met: (1) The units shall be available at affordable housing cost to, and occupied by, persons and families of very low or low income. (2) The units shall comply with subdivision (c) of Section 33413, except that the requirements of that subdivision shall be deemed satisfied if the recorded covenants or restrictions are enforceable by the City of Hayward. (3) The units shall be located on a parcel or parcels immediately contiguous to the Mt. Eden Sub-Area of the Eden Redevelopment Project Area. (4) The Redevelopment Agency of the City of Hayward shall provide to the Redevelopment Agency of the County of Alameda written consent to the measures taken pursuant to this section and shall not count any units credited to the Redevelopment Agency of Alameda County pursuant to this section towards its own production or replacement requirements under Section 33413. (b) The Redevelopment Agency of the County of Alameda shall cause to be made available, at affordable housing cost to, and occupied by, persons and families of very low, low-, or moderate-income households, as applicable, two units outside the project area for each unit that otherwise would have been required to be available inside the project area as required by clause (ii) of subparagraph (A) of paragraph (2) of subdivision (b) of Section 33413. (c) This section does not apply to a housing unit for which construction commences on or after January 1, 2012.