How Long Does a Custom Outdoor Kitchen Build Actually Take in St. Louis?

Stage 1: Design and consultation — 1-2 weeks

This covers the initial site walk, discussing layout and materials, and finalizing a design that accounts for the actual lot, sightlines, and how the household plans to use the space. Rushing this stage tends to cost more time later, since layout changes after construction starts are far more disruptive than a few extra days of planning up front.

Stage 2: Permit review — 2-6 weeks

This runs in parallel with material ordering where possible, but construction generally can't start until permits clear. As covered in the permit guide, this window depends heavily on which St. Louis County municipality the project is in — some permit desks move faster than others, and any project needing an engineered gas line or falling under an architectural review district will run toward the longer end.

Stage 3: Material lead times — 2-4 weeks (often overlapping with permitting)

Natural stone veneer, porcelain countertop slabs, and specialty appliances (built-in grills, pizza oven inserts) frequently run 2-4 weeks out from order to delivery, sometimes longer for a specific stone pattern or a popular appliance model during peak spring/summer ordering season. Ordering these as soon as the design is finalized — rather than waiting for permits to clear first — is one of the easiest ways to keep the overall timeline tight.

Stage 4: Site prep and footings — several days to a week

Grading, excavation, and pouring footings for the masonry structure. On a sloped lot or one needing significant grading, this stage takes longer; on a flat, already-prepped pad, it moves quickly.

Stage 5: Masonry construction — 2-4 weeks

The CMU block frame goes up, followed by the stone or stucco veneer. This is the most visible, labor-intensive stage and where most of the visual transformation happens. A simple grill island moves through this stage faster than a full L-shaped kitchen with a bar and pizza oven.

Stage 6: Utility rough-in and inspection — several days to a week

Gas line and electrical rough-in happen either concurrently with masonry (stubbed in before veneer closes up the frame) or immediately after, followed by a municipal inspection before those systems get finished out. This inspection step is required, not optional, and scheduling depends on the municipality's inspector availability.

Stage 7: Finish work — 1-2 weeks

Countertop installation, appliance install and hookup, final electrical and lighting, cabinetry doors and hardware, and any final grout or sealant work. This is also when a covered structure, if part of the scope, gets finished out.

Why weather is the real wildcard

Concrete and masonry work generally pauses below roughly 40°F — the mortar and concrete curing process is temperature-dependent, and working through a hard freeze risks a structural failure that's far more expensive than waiting. A build that starts in November in St. Louis can hit a multi-week weather pause and stretch into spring, even if every other stage went smoothly. This is why late-summer and fall starts (avoiding a winter masonry window) tend to run closer to the shorter end of the 6-14 week range, while late-fall starts should budget for the possibility of a spring finish.

A realistic total

A straightforward grill island with no major site prep, in a municipality with a fast permit desk, started in good weather, can realistically close out in around 6-8 weeks from design to finish. A full outdoor living kitchen with a pizza oven, bar, covered structure, and more involved permitting more realistically runs 10-14 weeks, longer if it crosses a winter weather pause.