Concrete Patios in Kenner, LA

What Does a Concrete Patio Cost in Kenner?

Concrete patio installation in Kenner runs $9 to $15 per square foot in 2026, which puts a 400 sq ft patio at $3,600 to $6,000 and a 600 sq ft patio at $5,400 to $9,000. Four variables move that range in Kenner specifically.

• Subgrade depth. Organic material near the surface sometimes requires excavating 10 to 12 inches before clean base material begins, adding $1 to $2 per square foot over a standard dig.
• Base thickness. A 6-inch compacted limestone base is the floor, not the ceiling. Sites with standing water or very soft fill run 8 inches, which adds material and compaction time.
• Reinforcement. Rebar costs more than wire mesh, but wire mesh is not adequate for soil that moves. The price includes rebar.
• Pergola footings. Each attached pergola footing requires a separate 12-inch diameter concrete pier drilled 36 to 48 inches deep to reach stable bearing, typically $200 to $350 per footing.

What Does Kenner Ground Demand for a Concrete Patio?

Kenner's alluvial clay consolidates slowly under any imposed load, so every spec that is optional on better-draining ground becomes mandatory here.

Excavation goes to a minimum of 10 inches below finished grade: 6 inches of compacted crushed limestone base, then 4 to 5 inches of 3,500 PSI concrete. The limestone base is compacted in two lifts, each checked with a plate compactor before the next lift goes down. Skipping to a single lift is where settlement begins.

Reinforcement is #3 rebar on 18-inch centres throughout the slab, with chairs holding rebar at mid-depth. The high water table in Jefferson Parish means the subgrade stays moist, which accelerates organic compression under load. Rebar at mid-depth keeps the slab intact as the bearing surface shifts over time.

Expansion joints are cut every 8 to 10 feet in both directions within 12 hours of the pour. In clay soil, thermal movement and moisture cycling are both working against the slab, so joint spacing that might be generous elsewhere is tight here.

The finished slab carries a 1.5 to 2 percent slope away from the house. With the water table 2 to 5 feet below grade, surface water that pools on or around the patio has nowhere to drain quickly. The slope forces water off the slab before it can infiltrate and soften the base.

A penetrating sealer applied 28 days after the pour slows moisture cycling at the surface and extends the life of the broom finish. Reapplication every 3 to 5 years keeps the protection active.

How Does the Job Run in Kenner?

A standard 400 to 600 sq ft Kenner patio runs 3 to 4 days from excavation to broom finish. Day one covers excavation, subgrade preparation, and the first limestone lift. Day two completes the base, sets forms, and places rebar. Day three is the pour, finish, and joint cuts. Day four, if needed, handles pergola footing piers or a larger footprint.

Dewatering is occasionally needed on sites where the water table sits at the shallow end of the 2 to 5 foot range. A submersible pump keeps the excavation dry during base compaction. It adds two to four hours, not a full day.

Jefferson Parish Department of Inspection and Code Enforcement handles permits for patio work. Confirm current thresholds and fees with that office before the job begins.

Recent Patio Project in Kenner

Backyard patio replacement, Kenner

480 sq ft. The original slab had dropped 1.5 inches at the far corner over roughly 10 years, a typical outcome where the limestone base was undersized at original construction. Excavated 11 inches to reach competent subgrade, placed 7 inches of compacted limestone in two lifts, poured 4.5 inches of 3,500 PSI concrete with #3 rebar on 18-inch centres. Broom finish, sealer applied at 28 days. Two pergola footings drilled to 42 inches. Three and a half days total.

Questions Kenner Homeowners Ask About Concrete Patios

Do I need a permit for a concrete patio in Kenner?

Permit requirements depend on the patio size and whether any structure attaches to it. Jefferson Parish Department of Inspection and Code Enforcement sets the thresholds and fees, and those rules change. Contact that office directly before work begins to confirm what the current project requires.

Can I pour a concrete patio over my existing cracked slab?

Pouring over a settled Kenner slab traps the problem rather than fixing it. If the original slab moved because the base compressed, the new concrete will follow the same path. The correct approach is full removal, subgrade re-evaluation, and a properly compacted limestone base before any new concrete goes down.

How long before I can use the patio after the pour?

Foot traffic is safe at 24 to 48 hours. Furniture and light use begin at 7 days. The slab reaches full design strength at 28 days, which is also when the penetrating sealer goes on. Do not place heavy planters or pergola base plates before the 7-day mark.