However, the Legislature may provide that, under appropriate circumstances and pursuant to definitions and procedures established by the Legislature, any person over the age of 55 years who resides in property that is eligible for the homeowner's exemption under subdivision (k) of Section 3 of Article XIII and any implementing legislation may transfer the base year value of the property entitled to exemption, with the adjustments authorized by subdivision (b), to any replacement dwelling of equal or lesser value located within the same county and purchased or newly constructed by that person as his or her principal residence within two years of the sale of the original property. For purposes of this section, "any person over the age of 55 years" includes a married couple one member of which is over the age of 55 years. For purposes of this section, "replacement dwelling" means a building, structure, or other shelter constituting a place of abode, whether real property or personal property, and any land on which it may be situated. For purposes of this section, a two-dwelling unit shall be considered as two separate single-family dwellings. This paragraph shall apply to any replacement dwelling that was purchased or newly constructed on or after November 5, 1986.
In addition, the Legislature may authorize each county board of supervisors, after consultation with the local affected agencies within the county's boundaries, to adopt an ordinance making the provisions of this subdivision relating to transfer of base year value also applicable to situations in which the replacement dwellings are located in that county and the original properties are located in another county within this State. For purposes of this paragraph, "local affected agency" means any city, special district, school district, or community college district that receives an annual property tax revenue allocation. This paragraph applies to any replacement dwelling that was purchased or newly constructed on or after the date the county adopted the provisions of this subdivision relating to transfer of base year value, but does not apply to any replacement dwelling that was purchased or newly constructed before November 9, 1988.
The Legislature may extend the provisions of this subdivision relating to the transfer of base year values from original properties to replacement dwellings of homeowners over the age of 55 years to severely disabled homeowners, but only with respect to those replacement dwellings purchased or newly constructed on or after the effective date of this paragraph.
Cal. Const. art. XIIIA § 2