How to Plan an Outdoor Kitchen Island: Grill, Cut-Outs, Gas and Ventilation
A great outdoor kitchen starts with a plan, not a pile of parts. Most of the expensive mistakes we see (a cut-out that is half an inch too small, a wood island with no insulation, no way to reach the gas shut-off) are easy to avoid if you decide things in the right order.
1. Choose the grill first
Everything else in the island is sized around the grill head, so pick it before anyone builds a frame. The width sets the cut-out, the gas type sets the plumbing, and the brand decides which matching jackets, covers and burners you can add. Not sure where to start? The grill finder matches you in about a minute, and our brand comparison shows how Napoleon, Blaze, Solaire and Lion differ.
2. Get the exact cut-out before you build
Every built-in grill lists its own cut-out (opening) size on its product page, and they are not interchangeable. Three popular 32 inch grills show why:
- Blaze Premium LTE+ 32: 30 5/8 in wide x 21 1/4 in deep x 8 1/2 in high.
- Napoleon Built-In 700 Series 32: 30 to 32 in wide x 19.4 to 19.75 in deep x 10.25 in high.
- Solaire 30 inch built-in: 28 1/2 in wide x 23 in deep x 10 1/4 in high.
Build to the manufacturer's installation guide (it is under Resources on each grill page), not to the outside dimensions of the grill.
3. Wood or combustible island? Plan the insulation
If your island is framed in wood or any other combustible material, the grill makers require a heat barrier between the grill and the frame: an insulated jacket (Blaze) or a zero clearance liner (Napoleon). Masonry, block or steel-stud islands with cement board usually don't need one, but always confirm in the installation guide. Each grill page lists its matching jacket or liner under Complete your setup.
4. Put an access door under the grill
The space under a built-in grill is where the gas line and shut-off valve live, so most islands need an access door there. It doubles as storage for a propane tank if you aren't on natural gas. Drawers, trash pull-outs and refrigeration fill the rest of the run.
5. Decide on natural gas or propane
Natural gas means no tanks to refill but needs a gas line run to the island by a licensed pro. Propane is simpler to start with and the tank can live behind the access door. Most grills we sell come in both; you choose the gas type on the product page, and Build Your Island matches every burner to it.
6. Covered patio? Add a vent hood
Under a roof or pergola, smoke and heat collect at the ceiling. An outdoor-rated vent hood pulls them away. Choose a hood at least as wide as your grill, ideally a size up: a 36 inch hood suits most 30 to 32 inch grills, and a 42 inch hood suits 38 to 40 inch grills. Check the manufacturer's mounting height and clearance guidance for your space.
Pieces most islands need
Don't want to build at all?
A ready-made stainless island arrives complete and sets up in about an hour, with the grill installed or ready for your own 32 inch Blaze.
Frequently asked questions
Do I need an insulated jacket for my grill?
Only if the island is built from wood or another combustible material. Then the grill maker requires an insulated jacket or zero clearance liner. Masonry or steel-stud islands with cement board usually don't, but check the installation guide.
How much counter space should I leave beside the grill?
Plan for landing space on at least one side for plates and tools. Many people leave room on both sides, and a side burner can sit on one of them.
Can I build the island first and choose the grill later?
We don't recommend it. Cut-outs differ between brands and models, so choose the grill first and build to its installation guide.
Do I need a vent hood?
Only under a covered patio, pergola or loggia. Open-air islands don't need one.
Can you help me plan it?
Yes. Use Build Your Island to put a list together, then send it to us and we'll check fit, cut-outs and gas for free.