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How Much Does A Concrete Slab Cost?

Typical Range: $3,600 - $7,200

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September 23, 2021

Reviewed by Bob Tschudi, Expert Home Building and Remodeling Contributor.
Written by HomeAdvisor.

Concrete Slab Cost

Concrete slabs typically cost about $6 per square foot, or between $4 and $8 per square foot including labor. That’s about $5,400, or between $3,600 and $7,200 for a typical 30- by 30-foot slab that’s 6 inches deep. Materials alone cost about $4 per cubic foot.

Cost factors include:

  • Thickness of slab
  • Thickness of edges
  • Extra dirt work
  • Local material costs
  • Reinforcement material
  • Radiant heat
  • Grading to the subbase
  • Permits and inspections in some municipalities

Research how to choose a concrete contractor and plan on getting at least three bids for your project.

On This Page:

  1. Average Concrete Pad Cost
  2. Concrete Slab Cost Calculator
  3. Concrete Cost Per Square Foot
    1. Precast Concrete Per Square Foot
  4. Average Cost to Pour Concrete
    1. Concrete Cost Per Yard Installed
    2. Concrete Work Cost by Thickness
    3. Cost to Finish Concrete
    4. Labor Cost Factors
  5. Concrete Installation Cost by Application
  6. DIY Concrete Slab Flatwork vs. Hiring a Pro
  7. FAQs

Average Concrete Pad Cost

Average Cost$5,400
High Cost$7,200
Low Cost$3,600

Concrete Slab Cost Calculator

Size (in feet)Approximate Cost
10-by-10$600
12-by-12$865
12-by-20$1,440
20-by-20$2,400
24-by-24$3,460
20-by-30$3,600
25-by-25$3,750
20-by-40$4,800
30-by-30$5,400
30-by-40$7,200
30-by-50$9,000
40-by-40$9,600
40-by-60$14,400
40-by-80$19,200

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Concrete Cost Per Square Foot

The typical cost of a cement slab is between $1 and $5 per square foot. Concrete slabs usually cost between $4 and $8 per square foot.

Curious about the difference between cement versus concrete? Generally speaking, cement is an ingredient in concrete. It’s worth noting that people often use the terms interchangeably. Sometimes, you’ll find cement in other materials separate from concrete.

Precast Concrete Per Square Foot

Precast concrete costs between $20 and $30 per square foot. This cost is for a 200-square-foot cast and 100-square-foot cast, respectively. This price can go down based on the size of the cast, according to the Precast/Prestressed Concrete Institute. The larger the cast, the less it costs per square foot. Other factors that affect price include:

  • Size of structure
  • Finish type
  • Number of molds

Pros sometimes use precast concrete for your home’s foundation or walls. You might pay more up front for precast. However, the National Precast Concrete Association notes there’s long term value in precast concrete, including design flexibility.

Compare Quotes for Precast or Site-Poured Concrete
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Average Cost to Pour Concrete

It costs about $6 per square foot to pour concrete, or between $4 and $8 per square foot. Cost varies based on factors like concrete thickness and location of the project.

Concrete Cost Per Yard Installed

Concrete’s typically sold at about $110 per cubic yard. Here’s how to calculate what you’ll need for your project:

  • Multiply the length of your project by the width and then by the depth
  • Divide by 27, the number of cubic feet in a cubic yard
  • Add 10 percent in case of spilling

Concrete Work Cost by Thickness

ThicknessTypical Cost With Labor
2 inches$4.55 per sq. ft.
4 inches$5.35 per sq. ft.
5 inches$5.80 per sq. ft.
6 inches$6.20 per sq. ft.
8 inches$7 per sq. ft.

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Cost to Finish Concrete

The cost to finish concrete ranges from about $4 to $18 and up per square foot for a typical two-car driveway.

Finish TypeCost
Standard slab$4 – $8 per sq. ft.
Textured, stenciled, colored or bordered concrete$8 – $12 per sq. ft.
Engraved concrete, scored and stained, multiple colors or patterns$12 – $18 per sq. ft.
Hand or advanced techniques, chemical stains, saw-cut designs or borders$18+ per sq. ft.

Compare Quotes to Pour a Concrete Slab
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Labor Cost Factors

Concrete work is labor intensive. Factors that affect labor and project cost include:

  • Wire mesh
  • Type of mix
  • Grade of mix
  • Epoxy finish sealer
UpgradeCost
12”-2’ Thicker edges$1 – $2 per sq. ft.
2 inch Styrofoam under slab$0.50 per sq. ft.
Wire mesh under slab$0.35 per sq. ft.
Vapor barrier$0.50 per sq. ft.
Pump truck$900 flat

Where you live also affects labor cost. You’ll need to speak with local concrete pros about the cost of labor in your area.

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Concrete Installation Cost by Application

TypeCost
Concrete patio slab$2,780
Concrete slab for shed$480
Concrete garage floor$3,460
Concrete work for driveway$3,650
Monolithic slab foundation$12,300
Concrete parking pad$1,200
Concrete RV pad$3,840
Slab for mobile home$9,720

Cost to Lay a Concrete Patio Slab

The cost to install a concrete patio is $2,780. Some of the significant factors that make up the price include:

Looking to save? It’s possible to pour concrete over an existing concrete patio if you’d like to expand the size or make a new surface. The cost to install a stamped concrete patio is more affordable than other ways of decorating.

Get Quotes From Local Concrete Pros
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Cost of Concrete Slab for Shed

A concrete slab for a shed costs about $480. That’s for an 8-by-10 foot space with 6-inch depth.

Concrete Garage Floor Cost

It costs about $3,460 for a concrete garage floor. This includes all labor and materials for a typical 24-by-24 foot two-car garage with 6-inch thickness. Some homeowners like to add an additional sealant for protection. The cost to coat concrete flooring with epoxy ranges from $1,430 to $2,960.

On top of cost factors already mentioned, it’s important to check with local experts to find out what this project costs in your area.

Starting from scratch? The cost to build a garage ranges from $16,840 to $38,770.

Price of Concrete Work for a Driveway

Concrete driveway installation costs about $3,000, or between $1,800 and $6,000. Cost factors include:

  • Local material cost
  • Removal of existing surface

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Monolithic Slab Foundation Cost

A monolithic slab foundation costs between $4,600 and $20,000. Monolithic means pros pour the base of your house all at once. Your foundation should be able to keep moisture out of your house, protect you from the cold and safely hold your house up. Total cost depends on factors like the size of your home and where you live.

The cost to build a basement or foundation typically ranges from $4,000 to $12,300.

Slab for a Metal Building

The cost of a concrete slab for a metal building is about $6 per square foot, or between $4 and $8 per square foot including labor. A structural engineer or general contractor can provide more detail about the exact cost of your project based on factors including:

  • The weight of the structure
  • The reinforcements needed in the concrete
  • The thickness of the concrete
  • The climate you live in

Slab on Grade Cost

The cost of a concrete slab on grade starts at about $6 per square foot, or between $4 and $8 per square foot including labor. Price increases based on:

  • The type of soil you’re building on
  • Reinforcements within the concrete
  • Local labor and material cost

Factors like climate and soil type influence whether or not slab on grade is a good foundation for you. You’ll need to speak with a structural engineer near you before making any decisions.

Find Local Concrete Foundation Pros
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Concrete Parking Pad Cost

A concrete parking pad costs about $1,200. This is for a 10-by-20 foot parking pad that’s 6 inches thick. You’ll need to check local laws and ordinances before installing a parking pad. Some cities have even banned them.

Concrete RV Pad

A concrete RV pad costs about $3,840. This is for a typical 16-by-40 foot pad that’s 6 inches deep. You may need to tweak the size depending on the length and width of your RV, and whether or not you have slide outs.

Cost of Slab for Mobile Home

A slab for a mobile home costs about $9,720. This is for a 1,330-square-foot mobile home, with 6-inch thick concrete.

DIY Concrete Slab Flatwork vs. Hiring a Pro

Slab flatwork is messy, complicated work. These types of jobs refer to your walkways, driveways and concrete floors. From demolition work to prep reinforcement to edging, each one of these jobs requires expertise and equipment most people don’t have available. You may save a couple thousand dollars on labor, but if the end result is a shoddy driveway or a floor that’s not properly reinforced, you could get yourself into a financial hole trying to fix the problem. Ultimately, concrete installation is very difficult unless you’re extremely experienced with DIY.

Multiple Slabs at the Same Time

Once the concrete truck and concrete workers are at your house, the cost of additional slabs is just the cost of additional materials and labor, so you might want to plan additional concrete projects at the same time.

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FAQs

What’s the cost of a concrete slab for a house?

A concrete slab for a house costs about $15,000. That’s for a typically sized 2,600-square-foot house with 6-inch thickness.

How much is concrete per yard?

Concrete costs about $110 per cubic yard. The cost to deliver concrete ranges from $1,570 to $6,800.

How do I calculate the cost of concrete for my home project?

To calculate the cost of concrete for your home project, first find out the cost per square foot of concrete and labor in your area and multiply it by the cost per square foot for your thickness. Need help with estimation? Use our concrete calculator.

How much is the cost of a 30-by-30 concrete slab?

A 30-by-30 foot concrete slab costs about $5,400 including installation. This is for 6-inch thickness, but can go up or down depending on what your concrete pro recommends.

How long does a concrete slab last?

A concrete slab can last anywhere from 30 to 100 years if installed correctly. Factors that impact the lifespan of a concrete slab include:

  • Timely repair of cracks or breaks
  • Weather
  • Type

How long does it take to install concrete?

It typically takes between 24 and 48 hours to install concrete. This is for an average residential project and includes the time it takes to pour the mix and let it dry enough that a person can walk across it without leaving a dent.

“We always cordon off the newly-set concrete, even after 48 hours,” says Bob Tschudi, Angi Expert Review Board member and general contractor in Raleigh, NC.”In fact, we then put a tarp over it to keep it from getting stained by dirty construction boots.”

Don’t put any heavy machinery on newly poured concrete. It takes about 28 days for a typical mix to fully set.

What’s the thinnest a concrete slab can be?

The thinnest a concrete slab can be is about 2 inches. The thicker the material, the stronger it is. Typically, a pro applies thin layers on an area like a walkway. Even though a thinner layer is less expensive, the cost to build a concrete walkway is largely determined by the size and length you prefer.

Still Have Questions About Concrete Slabs?
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