"Certified rehabilitation", the rehabilitation of a qualified historic structure that has been approved and certified by the chairman of the Massachusetts historical commission as being consistent with the standards established by the Secretary of the United States Department of the Interior for rehabilitation of historic properties.
"Qualified historic structure", any building or structure, located within the commonwealth that is individually listed on the National Register of Historic Places or is a contributing building within a district that is listed on the National Register of Historic Places or which has been determined by the Massachusetts historical commission to be eligible for listing on the National Register of Historic Places, and which all or any portion of which is owned, in whole or in part, by the taxpayer.
"Qualified rehabilitation expenditure", any amount properly chargeable to a capital account and described in section 47(c)(2)(A)(i) of the Code, as amended and in effect for the taxable year, incurred in connection with the certified rehabilitation of a qualified historic structure, but the term shall not include personal property, personal use property or the cost of acquiring any building or interest thereon.
"Substantial rehabilitation" and "substantially rehabilitated", the qualified rehabilitation expenditures of the building during the 24-month period selected by the taxpayer ending with or within the taxable year exceed 25 per cent of the taxpayer's adjusted basis in such building and its structural components as of the beginning of such period. In the case of any rehabilitation that may reasonably be expected to be completed in phases set forth in architectural plans and specifications completed before the rehabilitation begins, the applicable period referred to in this paragraph shall be 60 months.
"Taxpayer", a person, firm, partnership, trust, estate, limited liability company or other entity subject to the income tax imposed by the provisions of this chapter.
Mass. Gen. Laws ch. 62, § 62:6J