Cost to Pour a Concrete Slab in 2026

Most residential concrete slabs in the Greater New Orleans area fall between $3,200 and $9,600 in total cost in 2026. Smaller pads carry a higher per-square-foot rate because mobilization, forming, and finishing take roughly the same crew time regardless of area poured. A site visit is what produces an actual number for any specific project.

What Determines the Cost of Pouring a Concrete Slab?

Four to six factors move a concrete slab price by 30% to 60% in either direction. Each one adds a measurable dollar amount to the per-square-foot rate.

How Much Does Demolition and Removal Add?

Removing an existing slab adds $2 to $6 per square foot. A 600 sq ft driveway tear-out with haul-off runs $1,200 to $3,600 depending on slab thickness and rebar content. A plain 3-inch patio slab breaks faster and costs less to haul than a 5-inch reinforced garage floor. Disposal fees at Orleans Parish transfer stations run $45 to $65 per ton of clean concrete.

How Does Subgrade Condition Affect Price?

Subgrade preparation adds $1 to $3 per square foot beyond basic grading. South shore and west bank properties sit on soft alluvial clay and organic silt over a high water table. That soil compresses under load, so a slab here requires 4 to 6 inches of compacted limestone base and often 6-mil polyethylene vapor barrier to limit moisture migration. North shore properties around Slidell and Mandeville have sandy pine-flat subgrade that drains naturally but erodes at slab edges, requiring formed containment and sometimes 8 inches of compacted base to prevent washout.

How Do Thickness and Reinforcement Change the Price?

Moving from a 4-inch to a 6-inch slab adds $1.50 to $3.00 per square foot in concrete volume alone. A 4-inch slab at 3500 PSI is standard for patios and walkways. Driveways carrying vehicles heavier than a passenger car call for 5 to 6 inches. Adding #3 rebar on 18-inch centers costs $0.75 to $1.50 per square foot. Fiber mesh reinforcement runs $0.30 to $0.60 per square foot and is common for patio slabs where structural rebar is not required.

What Does the Finish Add?

Finish selection adds $0 to $8 per square foot above a standard broom finish. Broom finish is included in base pricing. Stamped concrete adds $4 to $8 per square foot for pattern, color hardener, and release agent. Exposed aggregate adds $2 to $4 per square foot. A smooth steel-trowel finish adds $1 to $2 per square foot of labor time. Each finish changes the crew's timeline on the slab, and time is the cost driver.

What Does a Concrete Slab Cost by Size?

Total cost scales with square footage, but per-square-foot rates drop as the pour grows. The fixed costs of mobilization, forming, and base prep spread across a larger area on bigger jobs.

• A 10x10 pad (100 sq ft) at $9 to $16 per square foot totals $900 to $1,600
• A 10x20 shed slab (200 sq ft) at $8 to $14 per square foot totals $1,600 to $2,800
• A 20x20 patio (400 sq ft) at $8 to $12 per square foot totals $3,200 to $4,800
• A 20x30 single driveway (600 sq ft) at $8 to $12 per square foot totals $4,800 to $7,200
• A 20x50 double driveway (1,000 sq ft) at $7 to $11 per square foot totals $7,000 to $11,000
• A 30x50 commercial pad (1,500 sq ft) at $6 to $12 per square foot totals $9,000 to $18,000

These ranges assume a 4-inch slab on compacted base with broom finish in the Greater New Orleans market. Demolition, upgraded finish, or poor subgrade conditions push the total toward the upper end of each range.

How Does the Cost Change by Slab Type or Finish?

Slab type and surface finish account for the widest price variation on otherwise identical square footage.

Stamped concrete carries the highest labor premium because the crew works within a narrow window after the pour. A stamped patio at 400 sq ft runs $4,000 to $7,200, compared to $2,400 to $4,000 for a broom-finish slab of the same size.

What Is Included in a Contractor's Slab Price, and What Is Not?

A complete slab bid covers everything from forming to joint cutting. Knowing what falls inside and outside that number prevents surprises at invoice time.

What a Complete Bid Includes

• Layout and formwork
• Excavation to grade (typically 8 to 10 inches below finished slab height)
• 4 to 6 inches of compacted limestone base
• 6-mil poly vapor barrier
• Reinforcement (fiber mesh or rebar, specified in the bid)
• Concrete delivery and pour (3500 PSI standard residential mix)
• Finishing to the specified texture
• Control joint cutting within 12 hours
• Form stripping and basic site cleanup

What Is Typically Not Included

• Demolition and disposal of existing concrete ($2 to $6 per sq ft)
• Significant grading or fill beyond 6 inches ($1 to $4 per sq ft)
• Permits, where required by the parish ($75 to $300 depending on jurisdiction)
• Sealer application ($0.50 to $1.50 per sq ft, recommended 28 days after pour)
• Plumbing or electrical rough-in beneath the slab
• Soil testing or engineering for commercial pads

Every bid from New Orleans Concrete Contractors itemizes included and excluded work so the scope is clear before the pour date is set.

How Do You Tell If a Concrete Slab Quote Is Fair?

A fair quote falls within the $6 to $14 per square foot range for this market, with every line item visible. Three criteria separate a legitimate bid from a low number that costs more in the long run.

First, check the slab thickness. A bid at $4 per square foot often means a 3-inch slab instead of 4 inches. A 3-inch slab cracks under vehicle loads within 2 to 3 years in the clay soils common south of Lake Pontchartrain.

Second, confirm that the base is specified. A compacted limestone base of 4 to 6 inches prevents settling. A contractor who pours directly onto native clay soil saves $1 to $2 per square foot on the bid and produces a slab that moves with seasonal moisture changes.

Third, look for reinforcement. A bid that skips rebar or fiber mesh saves $0.50 to $1.50 per square foot, but the slab has no crack resistance beyond the concrete itself. Control joints cut every 8 to 10 feet direct cracking to planned locations. A bid that omits joint cutting saves the crew 30 to 45 minutes and produces random cracks within the first year.

Where Do New Orleans Slab Prices Sit Against the National Range?

Greater New Orleans concrete slab pricing runs 10% to 20% above the national average of $5 to $10 per square foot. Three factors account for the difference. First, labor rates in the New Orleans construction market reflect a smaller skilled labor pool across Jefferson, Orleans, and St. Tammany parishes, pushing crew costs $2 to $4 per hour above Gulf South averages. Second, subgrade conditions on the south shore require thicker base material and vapor barrier on nearly every residential pour, adding $1 to $2 per square foot that a slab on stable ground elsewhere does not need. Third, concrete delivery costs reflect the batch plant locations relative to job sites, with haul charges of $50 to $150 per load added beyond a 15-mile radius from the plant.

These factors make the $6 to $14 per square foot range standard for Greater New Orleans in 2026. A site visit determines where a specific project falls within that range based on access, demolition, subgrade, slab dimensions, and finish.