An outdoor kitchen needs a 36-inch counter, at least 12 inches of landing space on each side of the grill, and a 36-inch aisle to stand in. Get those three numbers right and almost everything else follows.
Below are the measurements worth writing on the plan, the four layouts most backyards end up with, and how three real island sizes compare once they are sitting on your patio.
The numbers that decide everything
These are the working figures. They come from standard kitchen design practice and they hold up outdoors, where people crowd the cook far more than they do indoors.
| Measurement | What to build to |
|---|---|
| Counter height | 36 in |
| Bar height | 42 in |
| Counter depth | 24 to 30 in |
| Landing space, each side of the grill | 12 in minimum, 18 in better |
| Aisle for one cook | 36 in |
| Aisle when two people work | 42 to 48 in |
| Bar overhang at 42 in | 12 in |
| Width per bar stool | 24 in |
| Walkway behind seated stools | 36 in |
| Shortest island that still works | about 6 ft |
Landing space is the part people skip
A grill is not a worktop. You need somewhere to put the tray going on and the plate coming off, and it has to be on both sides — you will be turning in both directions with hot food in your hands.
Twelve inches each side is the working minimum. Eighteen is where it stops feeling tight. That means a 36-inch grill wants a run of about 6 feet before you have added a sink, a fridge or a single drawer. This is the single most common reason a finished island feels too small.
The four layouts
Nearly every outdoor kitchen is a version of one of these. Pick by the shape of the space you have and by whether you want to cook facing your guests or facing a wall.
Straight run
One line against a wall or a fence. Cheapest to build, easiest to run gas and water to, and the least sociable — you cook with your back to everyone.
L-shape
Wraps a corner and buys you a prep zone without a longer wall. Keep the grill on one leg and prep on the other. The inside corner is awkward to reach into, so put storage there rather than an appliance you need to open.
U-shape
The most counter per square foot, and the layout that feels most like a real kitchen. It needs the most room: leave at least 4 feet between the runs or you will be trapping whoever is cooking.
Island with bar
Free-standing, so you cook facing the party. The raised bar hides the grill mess from anyone sitting at it, which is the real reason to build one. Allow 24 inches of bar per stool and 12 inches of overhang for knees at a 42-inch bar.
Where to put it
Close enough to the house that carrying things out is not a trek, far enough that smoke and heat are not going through a door or window. Most people end up 10 to 20 feet from the back door, with the island oriented so the prevailing wind carries smoke away from the seating rather than into it.
On clearances, follow the grill manufacturer’s specification and nothing else. Every built-in grill ships with required clearances to combustible surfaces, and they differ enough between models that a number from a blog is worth nothing. If the island will sit under a roof, a pergola or any overhead structure, check the manufacturer’s stated overhead clearance and ventilation requirements before you pour a slab — a covered patio can rule a grill out entirely, and it is much cheaper to find that out now.
Also check your own local code and, if you have one, your HOA. Neither of those is something a manufacturer’s manual covers.
Three island sizes, side by side
The jump from six feet to twelve is not really about counter space. It is about how many appliances you can fit without losing the landing space that makes the thing usable.
| Island | Length | What fits |
|---|---|---|
| KoKoMo Mini Maui | About 6 ft | Built-in grill, refrigerator, LED lighting |
| KoKoMo St. John | 7 ft 6 in | 32-inch grill, refrigerator, LEDs, raised bar |
| 12.5-Foot Outdoor Kitchen Island | 12 ft 6 in | 4-burner grill, pizza oven, rotisserie, refrigerator, sink, granite |
Roughly: the Mini Maui suits a patio corner or a first outdoor kitchen. The St. John adds the raised bar, so four people can sit with you while you cook. The 12.5-foot island is the one that stops you walking back to the house mid-cook — at that length a pizza oven and a rotisserie are no longer competing with the grill for space.
How to size yours in one pass
- Start with the grill width you want.
- Add 12 to 18 inches of landing on each side.
- Add 24 inches for every appliance you are certain about — fridge, side burner, sink.
- Add 24 inches of bar per stool if you want seating.
- Check the total against the aisle you will have left. If the aisle drops below 36 inches, the island is too big for the space, not the other way round.
If you are still working out where the kitchen sits in the wider yard, the five-zone backyard layout is a useful way to place it against everything else. And once you know what you are cooking on, the grill temperature chart covers the part that happens after the build.
Common questions
How deep should an outdoor kitchen counter be?
Twenty-four to 30 inches. Thirty gives you room to set a tray down behind the grill; 24 is enough if space is tight. Built-in grills are usually cut into a 24-inch-deep opening, so check the cut-out dimensions for your specific model before you frame anything.
What is the minimum size for an outdoor kitchen?
About 6 feet of run. That fits a grill with landing space on both sides and one appliance underneath. Below that you have a grill cabinet rather than a kitchen, which is fine — just do not expect to prep at it.
How much overhang does a bar need?
Twelve inches at a 42-inch bar height. Lower bars need more: about 15 inches at 36 inches, and 18 at standard 30-inch table height. The overhang is knee room, so it is not somewhere to save an inch.
Can I put a built-in grill under a covered patio?
Sometimes, and it depends entirely on the grill. Manufacturers publish required overhead clearance and ventilation for built-in models, and some are not approved for use under any overhead structure. Check the manual for the exact model before you design the roof around it.
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