Apartments over any use permitted in the Commercial District or Business District. Off-street parking shall be provided as required by this chapter for apartment uses; provided, however, in the case of apartments already existing at the date of passage of this chapter and not in the case of apartments constructed thereafter, that if or to the extent which there is not sufficient space on the same lot as the building and if a municipally owned parking lot borders within 500 feet of the nearest property line, the off-street parking requirements need not be met; provided, further, that the owner of the subject property shall procure and submit to the Borough of Lansdale, as a condition of receiving any apartment licenses required under the provisions of the Borough Code, evidence there have been procured for the whole term of the licenses stickers for tenant parking on municipal parking lots, as provided for in Chapter 268, Parking, Article II, Municipal Parking Lots, for such number of cars as parking spaces are required for under the provisions of § 405-1703. It is not intended by this provision to permit the elimination of existing parking spaces or available area.[1]