Turning a Bare Concrete Slab Into a Full Outdoor Kitchen

A plain builder slab with no gas, no water and no power, and a propane grill sitting on it.

The yard we started with

The patio was standard-issue builder concrete. A plain rectangular slab, no stub-outs for gas or water, no electrical, nothing. The kind of blank space that comes with a lot of newer homes: technically a patio, functionally just a place where a grill happened to sit. A freestanding propane grill and two plastic chairs were the extent of it.

The owners had lived with it for about two years. Long enough to know exactly what was missing, not long enough to have any illusions about a quick fix. There was no existing infrastructure to build off. Everything, gas line, footing and structure, was starting from zero.

What they wanted

The ask was straightforward on paper. What made it more specific was walking the yard.

1. A grill station that did not dominate the whole patio. The slab was not huge, and they did not want to lose the open space they used for a fire pit and seating on the other side.
2. Storage that could handle being outside year-round without turning into a mess by spring.
3. A counter height and layout that worked for two people cooking at once, not just one.

What we decided, and why

Because the slab had no existing utilities, the first real decision was routing. Where the new gas line would run from the meter, and whether it made more sense to trench through the lawn or come up through the crawlspace.

We went with the crawlspace route. It cost a bit more in labor than a straight trench, but it meant no disturbed sod and no repair patch across a lawn that was otherwise in good shape.

For the layout, we kept the kitchen to a straight run along the back wall instead of an L or a U. The slab’s depth did not comfortably support a wraparound without eating into the fire pit seating area they wanted to keep, and a straight run with a slightly longer counter gave them the two-person prep space without the footprint.

The footing went in at the standard minimum depth for the area’s frost line. Non-negotiable regardless of how straightforward the rest of the layout was. A shallow footing under a heavy block structure is the kind of shortcut that shows up as cracking two winters later, not two months later.

What went wrong

The setback here was the countertop material. They had chosen a specific quartzite slab, and the supplier’s timeline slipped by almost two weeks because of a fabrication backlog. Not something we controlled, but something we should have flagged as a risk earlier given it was a less common slab pattern.

We kept the block and stone veneer work moving in the meantime so the delay did not stall the whole job, but the final countertop install ended up being its own separate trip near the end rather than a clean handoff.

The other adjustment was smaller. The original plan had a single wide storage door under the counter, but once the block core was built they asked to split it into two smaller doors instead, easier to access without swinging a wide door into the seating area. We made that change during the build with no real cost impact, but it is the kind of thing that is easier to lock down at design stage than mid-construction.

How it ended up

About five weeks after breaking ground, two of those weeks eaten by the countertop delay, they had a straight-run built-in kitchen with a properly sized gas line, split storage doors, and enough counter space for two people to actually cook side by side.

The fire pit area on the other side of the patio stayed untouched, which was the point all along.

More projects

Every one of these has the same five sections, including what went wrong.

Northwest MeridianFrom a Gas Stub to a Full Outdoor KitchenA four year old house with a capped gas stub and a 10x10 paver pad. It came out as an L-shaped kitchen with bar seating for…Outdoor Kitchen Remodel$22,000 to $28,0005 to 6 weeksRead the build →Giving a Decade-Old Outdoor Kitchen New LifeTwelve years of freeze and thaw had cracked the tile counter and chipped the stucco. Demo showed the block underneath was mostly sound, and the mortar…Outdoor Kitchen Remodel$17,000 to $23,0005 to 6 weeksRead the build →Fitting a Full Outdoor Kitchen Onto a Tight Suburban LotA quarter acre, a trampoline, and a 36-inch side gate every pallet had to fit through. Vertical storage did the work the floor space could not.Outdoor Kitchen Construction$16,000 to $21,0004 to 5 weeksRead the build →Building a Fireplace That Anchors an Established YardFifteen years of mature landscaping and nowhere for anyone to gather. A maple canopy moved the fireplace eight feet, and a root under the footing meant…Outdoor Fireplace$14,000 to $19,0004 to 5 weeksRead the build →A Pizza Oven Built to Handle Wide-Open Acreage WindTwo portable ovens had already failed on this property because the wind would not let a fire settle. Orientation was not enough on its own, so…Built-In Pizza Oven$13,000 to $18,0004 to 5 weeksRead the build →A Family’s First Fire Pit, Done Right the First TimeThey had priced up the metal ring kits first. The clearance rules moved the pit twice before a single paver went down, which is a lot…Fire Pit Installation$6,500 to $9,5002 to 3 weeksRead the build →Squeezing a Full Kitchen Onto a Small Historic LotA sixty year old bungalow, a thirty foot deep yard, and a permit search that turned up an undocumented patio extension nobody knew about.Outdoor Kitchen Remodel$18,000 to $24,0005 to 6 weeksRead the build →Getting a Wood-Fired Oven to Draw Clean in Open CountryA test burn on a windy afternoon backed smoke up at the oven mouth. The flue went up another two feet with a wind-resistant cap before…Built-In Pizza Oven$13,000 to $18,0003 to 4 weeksRead the build →Reworking a Kitchen Around an Existing Covered PatioA good covered patio that nobody had planned a kitchen under. Two posts set the layout, and a structural header sat exactly where the vent duct…Outdoor Kitchen Remodel$20,000 to $26,0005 to 6 weeksRead the build →

See every project →