N.Y. Comp. Codes R. & Regs. tit. 21, § 2604.2
(a) Unless defined herein, terms used in this Part shall have the meaning set forth under section 1281 of the Public Authorities Law (PAL), and/or the Public Health Law (PHL). Terms used in this Part or to be used in complying with this Part have the following meanings.
(6) Allowable costs means all costs of an eligible project which the corporation determines are:
(8) Commencement of construction means the date that:
(37) Project completion means the later of: