Notwithstanding the foregoing, eligible real property shall not include college and school dormitories, club houses, or residences whose occupancy is restricted to an institutional use such as housing intended for use primarily or exclusively by the employees of a single company or institution. A building is an eligible real property only if it qualifies as such after completion of the eligible improvements, but need not have been an eligible real property prior to the eligible improvements.
N.Y. Real Prop. Tax. Law § 488-A