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How much does a concrete slab cost?

A concrete slab costs $3,600 to $7,200 in 2026 for a 900 sq ft pour. What changes your price is below.

LawnStarter's national average is $6.60 per square foot, and reinforced slabs run $9.29 to $10.04 per square foot.

A concrete slab costs $3,600 to $7,200 in 2026 for a 900 sq ft pour

Estimate your concrete slab cost

Pick what you need and add your ZIP. The price updates as you go. Got a price already? Check it in the last step.

1Which one do you need?
2Thickness
3What is your ZIP?
Local prices not added yet.
4Got a price?
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Is this price fair?

A fair price is $3,600 to $7,200.

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Low$5,400High
Your estimateUS average
$3,600to$7,200

Middle of the range: $5,400

$0$4,860$9,720
Normal range Middle

What you are paying for

900 sq ft slabUS range for this job.$3,600 to $7,200
4 inchThickness.Base price
US averageLocal prices not added yet.US price
Middle of rangeHalfway between low and high.$5,400
How we calculate this

    Prices are for the United States in 2026 from published cost guides, checked September 2026. This is an estimate, not a quote.

    Middle $5,400$3,600 to $7,200

    How much does a concrete slab cost by size?

    8 x 8 (64 sq ft)$278 to $495 (LawnStarter).
    10 x 10 (100 sq ft)$434 to $773.
    12 x 12 (144 sq ft)$625 to $1,113.
    20 x 20 (400 sq ft)$1,600 to $3,200 (Inch Calculator).
    900 sq ft$3,600 to $7,200 (Angi).
    Per sq ft, plain$4.34 to $7.73.
    Per sq ft, reinforced$9.29 to $10.04.

    What pushes a quote up

    SizePriced by square foot.
    Thickness6 inch slabs cost more than 4 inch.
    ReinforcementMesh or rebar adds cost.
    Site prepGrading and gravel base add cost.
    FinishStamped or colored concrete costs more.

    Concrete slab cost by region

    Lower cost states$2,900 to $5,800. Alabama, Arkansas, Indiana, Iowa, Kansas, Kentucky, Mississippi, Missouri, Oklahoma, Tennessee, West Virginia and most rural areas.
    Average cost states$3,600 to $7,200. Arizona, Florida, Georgia, Michigan, North Carolina, Ohio, Pennsylvania, Texas, Virginia and most mid size cities.
    Higher cost states$4,700 to $9,400. California, Connecticut, Hawaii, Massachusetts, New Jersey, New York, Washington, plus big metros such as Chicago, Denver and Washington DC.

    These rows are our estimate. We took the typical national range and adjusted it for local labor costs, which run about 20 percent lower in the cheapest states and about 30 percent higher in the dearest ones. Concrete and labor prices differ a lot by region.

    How much does it cost to pour a 20x20 slab?

    A 20 by 20 foot slab is 400 square feet. Inch Calculator puts a basic one at $1,600 to $3,200, depending on thickness and extras. Labor alone runs about $2 to $5 per square foot.

    A 4 inch slab with wire mesh suits patios, sheds and walkways. Garages and driveways often need 5 to 6 inches and rebar for heavier loads.

    Small jobs cost more per foot

    Concrete trucks and crews have minimums, so a tiny slab costs more per square foot than a big one.

    Why this costs more in 2026

    Ready mix concrete is delivered by diesel trucks and cement prices rose, so slabs cost more in 2026.

    Diesel passed $6 a gallon on the AAA national average for the first time on September 11, 2026 (CBS 8 reporting AAA). Builders also paid 4.8 percent more for materials in a year (Roofing Contractor). Ask how long your quote is good for.

    How to judge the quote in your hand

    Ways to pay less