(6) Neither the provisions of subparagraph (a) of paragraph four of this subdivision, which require that the new building contain more than or equal to the number of housing accommodations that are contained in the structure to be demolished or substantially altered or remodeled nor the provisions of paragraph five of this subdivision shall apply with respect to any building in which there remains (A) three or fewer occupied apartments which constitute ten percent or less of the total dwelling units in the building or (B) one occupied apartment if the building contains ten or fewer apartments but only on the condition that the tenant is provided with the relocation, moving expense, stipend and any other benefits provided under the corresponding provisions of the rent stabilization law of nineteen hundred sixty-nine. In the event of a substantial alteration or remodeling of a building falling within the limitations of this paragraph, all of the relocation provisions available to an owner for demolition shall apply.