(c) For purposes of subdivision (a), the Legislature may provide that the term “newly constructed” does not include any of the following:
(1) The construction or addition of any active solar energy system.
(2) The construction or installation of any fire sprinkler system, other fire extinguishing system, fire detection system, or fire-related egress improvement, as defined by the Legislature, that is constructed or installed after the effective date of this paragraph.
(3) The construction, installation, or modification on or after the effective date of this paragraph of any portion or structural component of a single- or multiple-family dwelling that is eligible for the homeowner’s exemption if the construction, installation, or modification is for the
purpose of making the dwelling more accessible to a severely disabled person.
(4) The construction, installation, removal, or modification on or after the effective date of this paragraph of any portion or structural component of an existing building or structure if the construction, installation, removal, or modification is for the purpose of making the building more accessible to, or more usable by, a disabled person.
(5) The construction or addition, completed on or after January 1, 2019, of a rain water capture system, as defined by the Legislature.