In all permanent buildings or structures space shall be so arranged as to provide a minimum of 40 square feet of floor area for each person occupying a single bed. 35 square feet of space shall be provided for each person occupying a two tiered (bunk) bed. 50 square feet per person of sleeping space shall be required for persons needing special appliances or equipment such as wheelchairs or walkers for ambulation. Space shall include the area occupied by the bed, but shall not include space such as closets or bathrooms.
105 CMR, § 430.458