The Ontario Building Code | Plumbing Fixtures for Business and Personal Services Occupancies
3.7.4.7. Plumbing Fixtures for Business and Personal services Occupancies
(1) Except as provided in Sentence (2), the number of water closets required for business and personal services occupanciesshall conform to Table 3.7.4.7.
(2) Not more than one water closet to serve both sexes need be provided in a Group D occupancy having an occupant load of not more than 10 persons.
Table 3.7.4.7.
water Closets for Business and Personal services Occupancies
Forming Part of Sentence 3.7.4.7.(1)
| Item | Column 1 Number of Persons of Each Sex | Column 2 Minimum Number of water Closets for Each Sex |
| 1. | up to 9 | 1 |
| 2. | 10 to 24 | 2 |
| 3. | 25 to 49 | 3 |
| 4. | 50 to 74 | 4 |
| 5. | 75 to 100 | 5 |
| 6. | over 100 | 6 plus 1 for each additional increment of 30 persons of each sex in excess of 100 |
In Plain Language
The number of water closets required for business and personal services occupancies is set by a dedicated fixture-count table scaled to expected office and service-business occupant loads.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.