| Primary value | 2.10 m |
| Applies to | Bathrooms · Water-closets (WCs) · Combined bath + WC |
| Measured as | From FFL to the lowest point of the ceiling, measured at the lowest projection. |
| Source | NBC 2016 — Part 4, Clause 5.4.5 ✓ Verified |
Bathrooms get a lower minimum because they're occupied briefly and don't need the airflow volume of a habitable room. The 2.10 m floor is anthropometric — tall enough for any user, comfortable for a shower, low enough to keep stack and chase routing simple.
Most builders provide 2.4–2.7 m ceilings in bathrooms to accommodate exhaust fan plenums, false ceilings hiding plumbing, and a less coffin-like experience.