- Notwithstanding anything to the contrary contained in any law relating to local authorities, each apartment and its percentage of undivided interest in the common areas and facilities appurtenant to such apartment (being an apartment submitted to the provisions of this Act) shall be deemed to be separate property for the purpose of assessment to tax on lands and buildings leviable under such law and shall be assessed and taxed accordingly; and for this purpose, a local authority shall make all suitable rules to carry out the provisions of this section. Neither the building, the property nor any of the common areas and facilities shall be deemed to be separate property for the purposes of the levy of such tax.