| Primary value | 0.75 m |
| Applies to | Bathroom doors · WC doors · Powder room doors |
| Exceptions | Door height → 2.0 m min |
| Accessible bathrooms → 0.90 m clear opening | |
| Measured as | Clear opening width. |
| Source | NBC 2016 — Part 4, Clause 4.2 ✓ Verified |
0.75 m is the smallest door an adult can enter without turning sideways. Bathroom doors can be narrower than habitable rooms because no large furniture moves in or out.
Most Indian apartments use 0.75–0.80 m bathroom doors. Accessible bathrooms require 0.9 m clear opening per IS 4963.