Commercial Concrete in New Orleans, LA

What Does Commercial Concrete Work Cover?

Commercial concrete in Greater New Orleans falls into five categories that show up on most bids.

Parking lots and paving account for the largest share of commercial flatwork. A well-designed commercial lot is 5 to 6 inches of 4,000 PSI concrete over a properly compacted base, with designed drainage fall and marked control joint patterns.

ADA sidewalks and curbs are code-driven scopes. Every accessible route requires specific cross-slopes, detectable warning surfaces, and curb ramp geometry that must match current ADA Standards for Accessible Design. These details are non-negotiable on permitted commercial work.

Foundations and slab-on-grade serve light commercial construction, warehouse shells, and tenant build-outs. Slab thickness, rebar schedule, and vapor barrier spec all vary by occupancy and load.

Industrial concrete flooring carries its own tolerances. A distribution center floor or manufacturing slab is typically 6 to 8 inches of 4,500 PSI mix, finished to a flatness specification that a forklift or pallet jack can run on without vibration loading the rack system.

Drainage and detention work rounds out the scope: catch basins, swales, detention pond liners, and channel work. On the south shore, drainage is rarely optional.

What Does Commercial Concrete Cost in 2026?

Commercial flatwork in Greater New Orleans runs $8 to $18 per square foot in 2026, with the range driven by slab thickness, subgrade condition, mix design, finish type, and site access.

Commercial bids include a formal scope document, a pour schedule, and a phasing plan when the site must stay operational. A property manager replacing a parking lot in sections while tenants occupy the building adds mobilization cost per phase, typically $800 to $1,800 per return visit.

What Does the Ground in Greater New Orleans Change About the Work?

The south shore sits on soft alluvial clay and organic silt with a water table 2 to 5 feet below grade, which means subgrade preparation is not optional and cannot be shortcut without slab settlement.

On south-shore commercial sites, standard practice calls for over-excavating to undisturbed material, placing a minimum 6 inches of compacted crushed limestone, and verifying 95 percent compaction by Proctor density before forming. A 6-mil polyethylene vapor barrier goes down before any reinforced slab. Skipping lime stabilization on organic fill sites adds risk of differential settlement within 3 to 5 years.

The north shore, including Slidell and Covington in St. Tammany Parish, sits on sandy pine flat with real drainage. Water table depth is greater, base material compacts more reliably, and the dominant failure mode is erosion at slab edges rather than settlement. Edge thickening to 8 inches and adequate drainage slope address that risk.

River parishes add levee-district review to the permit process. Any commercial site in a levee district requires coordination with the district authority before ground is broken. Confirm current requirements with the relevant parish authority before submitting permits.

How Does the Commercial Concrete Process Run?

A commercial concrete project moves through six stages: bid documents, scope confirmation, scheduling, site preparation, pour and finish, and cure with handover.

Bid documents for commercial work include a written scope, a material spec sheet listing mix design and PSI, a rebar or fiber reinforcement schedule, a joint layout drawing, and a phased pour schedule where the site requires phasing. A bid without these is incomplete.

Site preparation is the stage that separates clean projects from problem projects. Subgrade is excavated, base material is placed and compacted in 3-inch lifts, and compaction is verified before forming begins. Forms are set to grade with drainage fall built in, typically 1 to 2 percent slope for parking and pedestrian surfaces.

Pour day proceeds in sections sized to the available crew and weather window. A commercial flatwork pour in New Orleans during summer starts before dawn to avoid afternoon heat, which accelerates surface set and increases cracking risk. Control joints are saw-cut to one-quarter depth within 12 to 18 hours.

Cure protection, either a curing compound or wet burlap under poly, stays in place for a minimum of 7 days. Vehicle traffic resumes at 7 days. Full 28-day strength is required before heavy equipment or rack loading.

What Separates Good Commercial Concrete from a Cheap Bid?

A qualified commercial buyer can inspect five things on any finished slab to know whether the spec was met.

Slab thickness at the edge: core a sample or check a fresh edge break. A 5-inch spec that delivers 3.5 inches at the perimeter was under-formed and will fail at the joint.

Joint spacing and depth: control joints in commercial flatwork are spaced at 10 to 15 times the slab thickness in feet. A 6-inch slab gets joints no farther than 7.5 feet apart. Joints cut shallow, less than one-quarter depth, do not control cracking.

Base material and compaction: request the compaction test report. A reputable contractor provides one. No report means no verification.

Drainage fall: standing water on a commercial slab accelerates deterioration and creates liability. A properly finished surface drains visibly within 30 minutes of rain.

Cure compound or cover: visible curing compound or cover material on the slab for the full 7-day window is a sign the contractor understands hydration. A slab wetted once and left open in July cures poorly and dusts early.

Ready to Request a Bid?

Send the site address, the approximate scope in square feet, and your project timeline. A written bid with a full scope document, material spec, and pour schedule comes back within 2 business days for most commercial projects in Greater New Orleans.