780 CMR, ch. 1, pt. 2, 104, 104.12
In recognition of the inherent difficulty of drafting a functional code that contemplates every situation that may arise in the area of building safety, 780 CMR 104.12 provides the building official, the Building Code Appeals Board, or the BBRS itself, with reasonable discretion to ensure that all life safety issues that may arise in the enforcement of 780 CMR may be appropriately addressed. Matters not specifically provided for in 780 CMR regarding structural, egress, fire, energy, sanitary or other requirements essential to occupant safety shall be determined by the building official or, in the case of an appeal, the Building Code Appeals Board. The details of action granting modifications shall be recorded and entered in the files of the building official. For highly specialized buildings and structures that conform to unique code requirements or nationally recognized standards not required in 780 CMR, registered design professionals shall provide sufficient information to the building official to support their approval.
780 CMR, ch. 1, pt. 2, 104, 104.12