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.
Find out what it will cost you
Pick the job, your state's cost level and the last detail. The estimate updates as you change them.
An estimate built from published 2026 cost guides. It is not a quote. Get a written quote before work starts.
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
| Size | Priced by square foot. |
|---|---|
| Thickness | 6 inch slabs cost more than 4 inch. |
| Reinforcement | Mesh or rebar adds cost. |
| Site prep | Grading and gravel base add cost. |
| Finish | Stamped 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.
Fuel is the common thread. AAA's national average for diesel passed $6 a gallon for the first time on September 11, 2026, up from about $3.70 a year earlier (CBS 8 reporting AAA). Every truck roll and every delivery carries that. Materials moved too. Associated Builders and Contractors reported construction input prices up 4.8 percent in a year as of March 2026, the largest annual gain since January 2023, and the Associated General Contractors said diesel jumped 37.8 percent in one month, the largest one month rise since 1990 (Roofing Contractor, April 2026). Some suppliers added freight surcharges this year. Ask how long your quote is good for.
How to judge the quote in your hand
- Ask the thickness.
- Ask mesh or rebar.
- Ask about the gravel base.
- Ask if control joints are cut.
- Ask if a permit is needed.
Ways to pay less
- Pour several projects at once.
- Keep a broom finish.
- Do the site clearing yourself.
- Pick 4 inches where loads are light.
- Get three quotes.
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Common questions
How much does a concrete slab cost?
About $4 to $8 per square foot; $3,600 to $7,200 for 900 square feet.
How much does a 20x20 slab cost?
About $1,600 to $3,200.
How much does a 10x10 slab cost?
About $434 to $773.
Do I need rebar?
Mesh is often enough for 4 inch slabs; heavy loads may need rebar.