this regulation shall not require the maintenance of more automobile parking space than is required herein for a new building or structure identical to said existing building or structure, nor the maintenance of such space for any type of main building or structure other than those specified herein. Further, provided, however, that if a building or structure constructed after the effective date of this ordinance is of insufficient floor area at the time of its construction to be required to provide parking spaces by the requirements of this section, but is subsequently increased in floor area in such a manner that it would be subject to said requirements, parking spaces shall then be provided on the basis of the total resulting floor area. Exceptions: (1) Notwithstanding any other provisions of this section to the contrary and for any existing high rise building cited under Los Angeles Municipal Code Section 91.8604.6.3, the Department of Building and Safety may reduce the number of required parking spaces by the number of spaces which the Department of Building and Safety determines are needed to install a water storage tank to enlarge an existing fire pump room, or to install a new fire pump room. (2) The Department of Building and Safety may reduce the number of required parking spaces by the number of spaces which the Department of Building and Safety determines are needed to provide disabled parking spaces as required by State access laws. (3) Notwithstanding any other provisions of this section to the contrary, the Department of Building and Safety may reduce the number of required parking spaces by the number of spaces that are necessarily displaced as a result of compliance with Divisions 93 and 95 of Article 1 of Chapter IX of the Los Angeles Municipal Code. The reduction shall not exceed 20 percent of required parking spaces or one (1) space, whichever is greater. This exception does not nullify any existing obligations under the Rent Stabilization Ordinance in Chapter XV, Article 1, of the Los Angeles Municipal Code. (Added by Ord. No. 185,633, Eff. 7/9/18.) (n) In no event shall automobile parking space which is provided for a building or use, as required by this section, be considered as providing any of the required space for another building or use. (o) Waiver.