Kitchen walkway and work-aisle widths
NKBA Kitchen 6Description
Walkways outside the work zone require 36 inches minimum clear width. Work aisles between facing counters or between a counter and an island require 42 inches minimum (single cook), 48 inches minimum (two cooks).
Why this exists
Less than 36" and a single person can't pass a fixed obstacle. Less than 42" between facing work surfaces and the cook is hemmed in turning between sink and range. The 48" two-cook aisle is what makes a kitchen genuinely usable for a couple cooking together.
Measurements
| Property | Operator | Value | Unit | Note |
|---|---|---|---|---|
minWalkwayWidth | min | 36 | in | Minimum walkway width outside the work zone. |
minWorkAisleWidth | min | 42 | in | Minimum work-aisle width (single cook). |
twoCookWorkAisleWidth | min | 48 | in | Recommended work-aisle width when two cooks share the kitchen. |
Categories
Applies to
- Room types: kitchen
Source
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.
Backed by research
Kitchen walkways need 36 inches minimum clear width; work aisles need 42 inches (single cook) and 48 inches (two cooks).
Association (2024), NKBA — Guideline 6 — view source ↗
See the full research bibliography for context. Our licensing principle describes how we cite published research without using the underlying datasets.
Related directives
- Bathroom entry doorway · NKBA Bath 1
- Doorway clear width · NKBA Kitchen 1
- Door swing into work zones · NKBA Kitchen 2
- Distance between work zones · NKBA Kitchen 3
- Traffic through the work triangle · NKBA Kitchen 4
Last reviewed 2026-05-09.