The interiors of all Group 1 and 2 dwelling units, except as exempted by 521 CMR 9.2.1, shall comply with the following requirements:
In Group 2B Units, the exterior deck, patio, balcony surfaces shall be either permanently installed at no more than 1/2 inch (1/2" = 13mm) below the floor level of the interior of the dwelling unit or a temporary raised surface, such as duckboards, that is no more than 1/2 inch (1/2" = 13mm) below the interior floor level shall be available upon request.
In Group 2B units, all telephone outlets must have an electrical outlet located within 12 inches (12" = 305mm) for installation of a TTY.
521 CMR, § 9.5