PART 3 — FIRE PROTECTION, OCCUPANT SAFETY AND ACCESSIBILITYUpdated for the 2024 Ontario Building Code
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3.7.4.4.Plumbing Fixtures for Care, Care and Treatment or Detention
Occupancies
(1) The number of water closets and lavatories required for Group B, Division 1 occupancies shall be determined on the
basis of the special needs of these occupancies.
(2) In a Group B, Division 2 or 3 occupancy, washrooms shall be provided so that each washroom
(a) serves not more than four patients or residents,
(b) is accessible from patients’ or residents’ sleeping rooms,
(c) contains one water closet, and
(d) contains one lavatory.
(3) The number of water closets required for employees in Group B, Division 2 or 3 occupancies shall conform to
Table 3.7.4.4.
Table 3.7.4.4.
Water Closets in Group B, Division 2 or 3 Occupancies
Forming Part of Sentence 3.7.4.4.(3)
Number of Persons Minimum Number of Water Closets
of Each Sex for Each Sex
up to 9 1
10 to 24 2
25 to 49 3
50 to 74 4
75 to 100 5
6 plus 1 for each additional increment of
over 100
30 persons of each sex in excess of 100
This provision includes a table — formatting is preserved from the source; refer to the official code for the authoritative layout.
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Code text is reproduced for reference from the Ontario Building Code (O. Reg. 163/24, 2024 Building Code Compendium). This page is provided for general information and is not an official copy. Always verify requirements against the official Ontario Building Code and confirm with your local building department.