Concrete Slab Cost per Square Foot
$10-$13 for basic broom finish. $16+ for foundations. $16-$28 for stamped. Demo adds $3-$4/sq ft.
Quick Answer: Concrete slabs cost $6-$10 per square foot for basic 4-inch thickness. A 20x20 slab (400 sq ft) runs $2,400-$4,000 installed.
How Much Does a Concrete Slab Cost Per Square Foot?
Concrete slabs cost $10-$13 per square foot for basic broom finish, $16+ per square foot for foundation slabs, and $16-$28 per square foot for stamped or decorative finishes. Most projects have a $4,000 minimum for basic work or $6,500 minimum for stamped concrete.
Concrete Slab Pricing by Type
| Slab Type | Price Per Sq Ft | Minimum Job |
|---|---|---|
| Basic Broom Finish (No Rebar) | $10-$11 | $4,000 |
| Broom Finish with Rebar | $12-$13 | — |
| Foundation Slab | $16+ | — |
| Stamped Concrete (No Rebar) | $16-$17 | $6,500 |
| Stamped Concrete (With Rebar) | $18-$19 | — |
| Premium Decorative | $20-$28 | — |
Additional Cost Factors
| Add-On | Additional Cost |
|---|---|
| Demo & Remove Existing Concrete | +$3-$4/sq ft ($1,500 min) |
| Pump Line Mix (limited access) | +$0.40-$0.50/sq ft + $1,200 pump fee |
| Rebar Reinforcement | +$2/sq ft |
| Thicker Pour (5-6 inch vs 4 inch) | +$1-$2/sq ft |
Example Project Costs
| Project | Size | Basic Price | With Rebar |
|---|---|---|---|
| Shed Pad | 100-200 sq ft | $4,000* | $4,000* |
| Patio | 200-400 sq ft | $4,000-$4,400 | $4,400-$5,200 |
| 2-Car Driveway | 400-500 sq ft | $4,400-$5,500 | $5,200-$6,500 |
| Garage Floor | 400-600 sq ft | $4,400-$6,600 | $5,200-$7,800 |
| Large Slab | 800-1,200 sq ft | $8,800-$13,200 | $10,400-$15,600 |
*Minimum job pricing applies for smaller projects
What's Included in Slab Pricing
Standard slab installation includes:
- Site preparation and grading
- Compacted gravel base (4-6 inches)
- 4000 PSI fiber-reinforced concrete
- Forming and pouring
- Broom or specified finish
- Control joint cutting
- Site cleanup
When to Choose Each Slab Type
Basic Broom Finish ($10-$13/sq ft)
Best for: Driveways, patios, sidewalks, utility pads. The textured broom finish provides good traction and is the most economical option for functional surfaces.
Foundation Slabs ($16+/sq ft)
Best for: Building foundations, garage floors supporting heavy equipment, commercial applications. Thicker pours with engineered reinforcement meet structural requirements.
Stamped Concrete ($16-$28/sq ft)
Best for: Decorative patios, pool decks, entryways, areas where aesthetics matter. Mimics stone, brick, or tile at a fraction of the cost.
Key Takeaways
- Basic broom finish: $10-$13 per square foot
- Foundation slabs: $16+ per square foot
- Stamped/decorative: $16-$28 per square foot
- Minimum job: $4,000 (basic) or $6,500 (stamped)
- Demo/removal adds $3-$4 per square foot
FAQ
What is the cheapest type of concrete slab?
Basic broom finish without rebar at $10-$11 per square foot is the most economical option. However, adding rebar ($12-$13/sq ft) significantly extends lifespan and is recommended for driveways and high-traffic areas.
How thick should a concrete slab be?
Standard residential slabs are 4 inches thick. Garage floors, driveways with heavy vehicles, and foundation slabs should be 5-6 inches thick with rebar reinforcement.
Is there a minimum job size?
Yes. Most contractors have a $4,000 minimum for basic concrete work and $6,500 minimum for stamped concrete. Small projects under these thresholds still cost the minimum due to equipment, materials, and crew requirements.
Does removal of old concrete cost extra?
Yes. Demolition and removal adds $3-$4 per square foot with a $1,500 minimum. This covers breaking up the old concrete, hauling it away, and preparing the site for new installation.
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