How Much Does a Concrete Slab Cost in 2026?
A concrete slab for a standard 20×20 patio runs $900–$1,800 nationally. A driveway or garage floor is $3,600–$7,000. Here's exactly what drives the number — and how to check your state.
Quick Cost Summary
| Project | Size | National Avg |
|---|---|---|
| Small patio | 10×10 ft | $220 – $380 |
| Standard patio | 20×20 ft | $900 – $1,600 |
| Single-car driveway | 10×20 ft | $450 – $800 |
| Two-car driveway | 20×40 ft | $3,600 – $6,200 |
| Two-car garage floor | 24×24 ft | $1,300 – $2,400 |
Prices assume 4-inch slab, ready-mix concrete, standard finish. Labor costs vary by state — use the calculator for your exact location.
What Does Concrete Cost Per Cubic Yard?
Concrete is priced in cubic yards. Ready-mix concrete from a truck averages $125–$165 per cubic yard for materials nationally. Add labor for pouring and finishing and total installed cost is typically $170–$220 per cubic yard.
State labor rates make a significant difference. In California or New York, labor runs 30–40% above the national average. In Mississippi or Arkansas, it's 15–20% below. Use our concrete calculator to see pricing adjusted for your state.
What Affects the Final Price?
1. Slab Thickness
Thickness is the single biggest cost lever. Every extra inch adds roughly 25% to material volume:
- • 4 inches — standard patio, walkway, garage floor
- • 5–6 inches — driveway (handles car and light truck weight)
- • 8+ inches — structural slab, commercial loading dock, RV parking
2. Finish Type
A basic broom finish is included in standard pricing. Decorative finishes add $2–$8 per square foot on top:
- • Broom finish — $0 upcharge (standard)
- • Exposed aggregate — +$2–$3/sq ft
- • Stamped concrete — +$8–$18/sq ft
- • Colored/stained — +$3–$7/sq ft
3. Site Prep and Rebar
Excavation, gravel base, and rebar or wire mesh add $1–$3 per square foot to most projects. Rocky or sloped sites cost more to excavate. Structural slabs require #4 rebar on 18-inch grids, which adds $0.50–$1.50 per square foot in material.
4. Access and Pump Trucks
If the ready-mix truck can't reach the pour site, you need a pump truck — which adds $800–$1,500 to the job. Backyard patios frequently need a pump. Ask your concrete contractor upfront.
Concrete Cost by State
Labor is the biggest variable between states. Here's how costs compare for a standard 400 sq ft (20×20) patio slab:
| State | Vs. National Avg | Estimated 20×20 Cost |
|---|---|---|
| Hawaii | +38% | $1,250 – $2,200 |
| California | +25% | $1,130 – $2,000 |
| New York | +22% | $1,100 – $1,950 |
| Texas | +3% | $930 – $1,650 |
| Florida | +5% | $950 – $1,680 |
| Mississippi | −15% | $770 – $1,360 |
| Arkansas | −13% | $790 – $1,390 |
For precise pricing in your metro area, use the concrete cost calculator.
How to Save Money on a Concrete Slab
- 1.Get 3+ quotes. Concrete pricing varies 20–30% between contractors in the same market. Always get multiple bids.
- 2.Avoid stamped concrete if budget is tight. It's beautiful but adds $3,200–$7,200 to a standard patio. Broom-finished concrete looks clean and costs much less.
- 3.Pour in late fall or winter in warm states. Demand is lower and contractors often discount.
- 4.Do your own demo. If you're replacing existing concrete, removing it yourself saves $500–$1,500 on a typical project.
- 5.Don't oversize the slab. A 16×20 patio serves most families just as well as a 20×24. Cutting 80 sq ft saves $200–$400.
DIY vs. Hiring a Contractor
DIY concrete is technically possible for small slabs, but the margin for error is unforgiving. Concrete has a 30–60 minute working window once placed. Uneven finishing, inadequate curing, or improper base prep leads to cracking within 1–2 years.
For anything larger than a 100 sq ft walkway, hire a licensed contractor. The labor cost savings rarely offset the risk of having to redo the work.
Get Your Exact State & Metro Price
Enter your slab dimensions and select your state — our calculator adjusts for local labor and material costs.
Frequently Asked Questions
How many cubic yards do I need for a 20×20 slab?
A 20×20 ft slab at 4 inches thick requires about 4.9 cubic yards of concrete (plus 5–10% waste). Order 5.2–5.5 cubic yards to be safe. At $125–$165/cu yd for materials, that's $650–$910 in concrete alone before labor.
How long before I can walk on a new concrete slab?
24–48 hours for light foot traffic. Avoid driving on a new driveway for at least 7 days. Full strength (4,000 PSI) is reached at 28 days — don't park heavy vehicles or place heavy equipment before then.
What PSI concrete should I use for a driveway?
Use 4,000 PSI for driveways and garage floors. Standard patios and sidewalks can use 3,000–3,500 PSI. In freeze-thaw climates, use air-entrained concrete and ask for a 4,000–4,500 PSI mix.
Do I need a permit for a concrete patio?
Typically no permit is required for a ground-level patio. Driveways may require a permit and curb cut approval. Always check with your local building department — rules vary significantly by municipality.