105 CMR 410.110
Bathroom Facilities: Sinks, Toilets, Tubs, and Showers
(A) The owner shall provide a bathroom which:
(1) Is not used for living, sleeping, cooking or eating purposes;
(2) Is accessible from within the building without passing through any part of another
dwelling unit or rooming unit; and
(3) Has a door capable of being closed. Bathrooms in homeless shelters shall not require
a door capable of being closed provided the entry to the bathroom is designed to block the
view from an adjacent room or common area.
(B) Each bathroom shall include:
(1) A toilet with a toilet seat. When more than one toilet is required by 105 CMR
410.110(E), each toilet shall be separated by walls or partitions and a door, and each urinal
shall be separated by walls or partitions to afford privacy;
(2) A sink in the same room as the toilet provided that:
(a) If the sink cannot be placed in the same room as the toilet, it shall be adjacent to the
door leading directly into the room in which the toilet is located;
(b) The kitchen sink may not be substituted for the sink required by 105 CMR
410.110(B)(2); and
(3) A bathtub or shower.
(C) Facilities required by 105 CMR 410.110 shall have smooth and impervious surfaces and
be free from defects which make them difficult to keep clean or create a risk of injury.
(D) For any residence in which the bathroom facilities required by 105 CMR 410.110 are
shared facilities, the owner shall ensure the facilities are maintained in a clean and sanitary
condition and the fixtures are sanitized at least once every 24 hours and more often if necessary.
(E) For every eight occupants of each rooming house in which bathroom facilities are not
provided in each room, with the exception of Homeless shelters, the owner shall provide:
(1) One toilet with a toilet seat and sink. One urinal may be substituted for each toilet for
up to ½ of the total number of toilets required in any bathroom used exclusively by males;
and
(2) A bathtub or a shower.