SECTION 1.  The first paragraph of section 17 chapter 465 of the acts of 1956, as amended, is hereby amended by striking from the first sentence the following words: - “, and no property of the Authority shall be taxed to a lessee thereof under section three A of chapter fifty-nine of the General Laws.”

SECTION 2.  Said section 17 chapter 465 of the acts of 1956, as amended, is hereby further amended by inserting the following paragraph after the third paragraph; -

Notwithstanding anything in this section to the contrary, real property of the Authority shall, if leased, used, or occupied in connection with a business conducted for profit, or if leased, used, or occupied for other than public purposes shall, for the privilege of such lease, use, or occupancy be valued, classified, assessed and taxed annually as of January 1 to the lessee, user, or occupant in the same manner and to the same extent as if such lessee, user, or occupant were the owner thereof in fee. No tax assessed under this section shall be a lien upon the real estate with respect to which it is assessed; nor shall any tax be enforced by any sale or taking of such real estate; but the interest of any lessee therein may be sold or taken by the collector of the town in which the real estate lies for the nonpayment of such taxes in the manner provided by law for the sale or taking of real estate for nonpayment of annual taxes. Notwithstanding the previous sentence, such collector may utilize all other remedies provided by chapter 60 for the collection of annual taxes upon real estate and for the collection of taxes assessed under this section.  This paragraph shall not apply to a use, lease or occupancy which is reasonably necessary to the public purpose of a public airport or port facility.  Reasonably necessary use shall not include residential use, hotels, entertainment facilities, office buildings, or retail buildings.