R.I. Gen. Laws § 23-27.3-106.0: Existing structures.

(a)(1) Except as provided in this section, existing buildings or structures when altered, renovated, reconstructed or repaired or a change of use occurs as specified in this section shall be made to conform to the requirements of the rehabilitation building and fire code for existing buildings and structures. See chapters 2 through 34 of regulation SBC-1 for new buildings.

(2) Except as provided for in the rehabilitation building and fire code for existing buildings and structures, the alternative procedures of SBC-1, chapter 34, entitled Repair, Alteration, Addition to, and Change of Use of Existing Buildings, may be used in lieu of the provisions of this section for all existing buildings in which there is work involving repairs, alterations, additions, or changes of use and occupancy.

(b) Flood resistant construction for buildings or structures in flood hazard areas. In order to determine the percentage between the costs for alterations, renovations, reconstruction and repairs and the physical value of the building or structure, to establish whether a substantial improvement or a substantial damage occurs, the building official shall exclude the alteration, renovation, reconstruction and repair cost of the following item:

All nonpermit items such as painting, decorating, landscaping, fees, and the like.