Kitchen Layout Planning: Work Triangle, Zones and Clearances

A good kitchen layout keeps the sink, cooktop and refrigerator close but not cramped, leaves at least 36 inches for walkways and 42–48 inches for work aisles, and provides landing space beside each appliance. These numbers come from the kitchen planning guidelines published by the National Kitchen & Bath Association (NKBA), which most professional designers follow.

What is the kitchen work triangle?

The work triangle connects the three main work centers: the sink, the cooking surface and the refrigerator. NKBA guidelines suggest the three legs of the triangle add up to no more than 26 feet, with each leg between 4 and 9 feet, and that no major traffic path cuts through it.

What clearances does a kitchen need?

Exact guideline wording and exceptions are in the NKBA planning guidelines; local building codes take priority where they differ.

Work triangle vs. work zones: which should you use?

The triangle works well for one cook in a compact kitchen. Larger kitchens and households with several cooks are easier to plan in zones:

• Prep zone: counter space between the sink and the cooktop.
• Cooking zone: cooktop, oven, microwave, pots and utensils.
• Cleanup zone: sink, dishwasher, trash and recycling.
• Storage zone: refrigerator, pantry and food storage.
• Serving / social zone: island seating, beverage area, dishes.

Good designs use both: zones for flow, and the triangle as a check that the main work centers aren’t too far apart.

Which kitchen layout works best for which room?

Compare them in detail in L-shaped vs. U-shaped vs. galley kitchens and kitchen island vs. peninsula.

Appliance placement tips

• Refrigerator: place it at the end of a run, near the entry, so family members can grab drinks without crossing the cooking zone. Check that its door opens fully past adjacent cabinets.
• Sink: often under a window; leave counter space on both sides for dirty and clean dishes.
• Dishwasher: next to the sink, and away from inside corners where an open door blocks the adjacent cabinet.
• Range or cooktop: away from windows and doorways, with landing space on both sides and room for a properly sized hood.
• Wall ovens and microwaves: at a comfortable height, with a landing area nearby for hot dishes.

Kitchen layout checklist

1. Measure the room accurately, including windows, doors, ceiling and utilities.
2. Choose a layout shape that fits the room and traffic paths.
3. Place the sink, cooktop and refrigerator, then check the work triangle.
4. Check every aisle and walkway against the clearance table above.
5. Plan landing areas and zones for prep, cooking, cleanup and storage.
6. Review every wall in elevation for collisions between doors, drawers and appliances.

Common kitchen layout mistakes

• Placing the refrigerator where its door blocks a walkway or another appliance.
• Putting the dishwasher in a corner where it can’t open fully.
• No landing space next to the refrigerator or wall oven.
• An island squeezed in with less than 42" around it.
• Corner cabinets that collide with drawers or appliance doors — check every opening in elevation.

Standard cabinet sizes are in our cabinet dimensions reference.

Frequently asked questions

What is the ideal kitchen work triangle size?

NKBA guidelines suggest the three legs of the sink–cooktop–refrigerator triangle total no more than 26 feet, with each leg between 4 and 9 feet.

How much space do you need around a kitchen island?

Plan at least 42 inches of aisle around an island where one person cooks, and 48 inches where two or more people work. Walkways that are not work areas need at least 36 inches.

What is the most efficient kitchen layout?

For one cook in a narrow space, a galley kitchen is the most efficient. For open-plan homes, an L-shaped kitchen with an island balances efficiency, storage and seating.