What is an outdoor kitchen built from?
A core, a counter and the appliances set into it. A masonry island, a concrete block core faced in brick, stone or stucco, has nothing in it that can rot, so the structure lasts like a garden wall. The counter is usually granite or another stone that shrugs off sun and water. The appliances are what wear out, which is why their cutouts are built to the maker’s sizes.
How much clearance does a built-in grill need?
The grill’s installation manual sets it, and the numbers differ by maker. One built-in model’s manual from DCS calls for 18 inches to combustible construction and 3 inches to noncombustible, which is why the cutout is framed in block and a wood pergola overhead gets measured before it’s drawn. Metro’s 2025 fire code amendment adds a distance of its own for grills: 15 feet from combustible material and from buildings with more than two dwelling units, which matters behind a condo or an apartment building.
Gas, power and water
Each is a trench from the house. Gas runs from the meter or a tank to a shutoff at the island, outdoor outlets go on GFCI protection, and a sink needs a supply and somewhere for its drain to go. Every trench is a dig, so Tennessee 811 gets its notice first. Laying the lines before the patio goes down saves cutting the patio later.
Covered or open?
With about 50 inches of rain a year at the airport, a roof over the cook puts the kitchen to use through more of the year. Under a pavilion or a patio cover, the grill maker’s manual says what has to be above it and whether a vent hood is needed. An open island with a fitted grill cover is the lighter option.
What to plan first
Where the cook stands and what they look at, where the smoke goes, how far it is to the back door, and how much counter sits on each side of the grill. The appliances are picked before the island is drawn, because each one brings a cutout size and clearances with it.
Sources
- DCS built-in grill installation manual, model 3648BH1 — one maker’s clearances
- Metro Nashville ordinance BL2025-1004 — outdoor fireplace and grill distances
- Tennessee 811, frequently asked questions
