Average kitchen size: dimensions and layout widths
By Rohit GaurLast updated October 30, 2026Report a mistake
A kitchen that is its own room in a new US home averages about 288 sq ft — 326 sq ft counting open-plan kitchens — by builders’ own estimates in a 2018 survey. A kitchen is also the one habitable room with no minimum size in the US model building code: the 70 sq ft floor and the 7 ft minimum width that apply to bedrooms and living rooms both list kitchens as the exception (IRC R304). So a kitchen’s size comes from two other places — what builders build, and what has to fit across it.
In a survey of 153 US builders, a kitchen that was a separate room in their typical new home averaged 288 sq ft: 195 sq ft in homes under 2,000 sq ft and 424 sq ft in homes of 3,500 sq ft or more. Counting open-plan kitchens too, the kitchen area averaged 326 sq ft, 11% of the home (NAHB). These are the builders’ estimates, not measurements, and no government survey measures kitchens.
Kitchen sizes in new US homes
| Size | Area | Basis and source |
|---|---|---|
| Kitchen, new US home under 2,000 sq ft | 195 ft² (18.1 m²) | Survey · NAHB |
| Kitchen, new US homes of every size | 288 ft² (26.8 m²) | Survey · NAHB |
| Kitchen area, open-plan ones included | 326 ft² (30.3 m²) | Survey · NAHB |
| Kitchen, new US home of 3,500 sq ft or more | 424 ft² (39.4 m²) | Survey · NAHB |
Only 71% of the builders’ typical new homes had a kitchen as a separate room at all — 74% of small homes and 63% of large ones. In the rest the kitchen is part of a great room, and its size is whatever part of that room you decide is kitchen.
How wide each layout needs to be
A kitchen’s width is set by what lies across it: counters 24 in deep, and the space between them. The National Kitchen & Bath Association’s planning guidelines ask for a work aisle of at least 42 in for one cook and 48 in for two, measured between counter fronts, and at least 36 in for a walkway that nobody cooks in (NKBA). England’s accessible-homes standard asks 1,200 mm (47.2 in) in front of and between kitchen units (Approved Document M, M4(2)). Add them up and every layout has a width below which it does not work:
| Layout | Wall to wall | Made of | In 16 × 12 ft |
|---|---|---|---|
| One wall of counters | 5.5 ft | 24 + 42 in | Fits |
| Galley, one cook | 7.5 ft | 24 + 42 + 24 in | Fits |
| Galley, England's M4(2) space | 7.94 ft | 24 + 47.2 + 24 in | Fits |
| Galley, two cooks | 8 ft | 24 + 48 + 24 in | Fits |
| U-shape, accessible | 9 ft | 24 + 60 + 24 in | Fits |
| Counters and an island | 10.5 ft | 24 + 42 + 24 + 36 in | Fits |
| Counters and an island with seats | 12.42 ft | 24 + 42 + 39 + 44 in | Too narrow |
| Two walls of counters and an island | 13 ft | 24 + 42 + 24 + 42 + 24 in | Too narrow |
The worked examples on this page use a kitchen 16 × 12 ft — 192 sq ft, about the 195 sq ft builders give a separate kitchen in a home under 2,000 sq ft. It takes a wall of counters and an island, but not an island with seats (12.4 ft) or counters on both walls with an island between them (13 ft).
The work triangle
The NKBA also asks that the walk between the sink, the cooktop and the refrigerator — the work triangle — adds up to no more than 26 ft, with no leg shorter than 4 ft or longer than 9 ft, and that a kitchen has 158 in of countertop in all. A long kitchen can meet the width rules and still fail these: a 30 ft run of cabinets with the refrigerator at one end and the stove at the other breaks the 9 ft rule.
Measuring a kitchen
Measure the floor wall to wall, and decide about the cabinets before you start: whether the new floor runs under them or stops at them changes the area you buy. The calculator takes the cabinets off as a cutout, and the tile calculator works from the area you will actually cover.