Real property constructed, altered, installed or improved subsequent to the first day of May 1977 for the purpose of commercial, business or industrial activity shall not be exempt from taxation, special ad valorem levies and service charges to any extent as authorized under Subdivision 7 of § 485-b of the Real Property Tax Law.
The per centum of exemption as set forth in Subdivision 2(a) of § 485-b of the Real Property Tax Law shall be reduced to zero for the first year and shall be zero every year thereafter for the next eight years.