StandardRecommended
Tub clearance
NKBA Bath 13Description
Tub front clearance ≥30" wide × 60" deep parallel to the tub (perpendicular for transfer).
Why this exists
Lets the user step in and out, dry off, and access the tub without bumping the toilet/vanity.
Measurements
| Property | Operator | Value | Unit | Note |
|---|---|---|---|---|
minWidth | min | 30 | in | |
minDepth | min | 60 | in |
Categories
Bathroom
Applies to
- Room types: bathroom, half_bath
Source
NKBAno manifest entry
Bathroom Planning Guidelines (2024)
Section: Guideline 13
Published 2024-01-01 · last verified 2026-05-09
Solver enforcement
Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.
Related directives
- Bathroom entry doorway · NKBA Bath 1
- Doorway swing clearance · NKBA Bath 2
- Clear floor space at fixtures · NKBA Bath 3
- Fixture clear-space overlap · NKBA Bath 4
- Toilet centerline + front (detailed) · NKBA Bath 5
Last reviewed 2026-05-09.