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How Much Does a Concrete Slab Cost?

$6 - $10
concrete slab cost per square foot
$6,000 - $10,000
average total concrete slab cost
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Key Takeaways

Key PointDetails
Cost Per Square Foot Installed$6 – $12
Average Total Cost (30′ x 30′ Slab)$5,400 – $10,800
Average Lifespan30 – 50 years

Concrete slabs are a versatile and durable option for various construction projects, from patios and driveways to foundations and floors. Understanding the costs involved in installing a concrete slab can help you plan your project effectively.

Concrete Slab Cost

The cost of a concrete slab varies based on the size and complexity of the project. Below is a breakdown of average costs by slab size:

Slab Size (Feet)Square FeetAverage Cost Installed
5×525$150 – $300
10×10100$600 – $1,200
12×12144$860 – $1,700
20×20400$2,400 – $4,800
20×30600$3,600 – $7,200
30×30900$5,400 – $10,800
40×401,600$9,600 – $19,200

Cost to Pour Concrete Slab by Project

The cost to pour a concrete slab can vary depending on the purpose of the project:

PurposeSquare FootageAverage Cost Installed
Shed Foundation100 – 400$600 – $4,800
Patio200 – 400$1,000 – $6,000
Garage Floor400 – 576$2,400 – $6,900
Concrete Driveway400 – 800$1,600 – $6,400
RV Pad200 – 700$1,200 – $8,400
Mobile Home Slab600 – 1,600$3,600 – $19,200
Foundation800 – 2,400$4,000 – $33,600

Concrete Slab Cost by Thickness

The thickness of a concrete slab significantly affects the cost. Thicker slabs are more durable but also more expensive to install:

ThicknessAverage Cost Per Square Foot Installed
2″$4 – $6
4″$6 – $8
6″$8 – $10
8″$10 – $12

Concrete Slab Cost Calculator

To estimate the cost of a concrete slab, consider the following factors:

FactorCost Per Square Foot
Materials$3 – $7
Labor$3 – $5
Total Cost$6 – $12

Labor Cost to Pour a Concrete Slab

Labor costs for pouring a concrete slab typically range from $3 to $5 per square foot. The total labor cost depends on the size of the area and the complexity of the project.

Precast vs. Poured On-Site

Precast concrete slabs are manufactured off-site and then installed on your property. They offer faster installation times but may be more expensive than poured-on-site slabs, which are mixed and poured directly at the construction site.

Cost to Repair vs. Replace Concrete

Deciding whether to repair or replace a concrete slab depends on the extent of the damage and the condition of the slab:

OptionAverage Cost
Repair Small Cracks$1 – $3 per linear foot
Resurfacing$3 – $7 per square foot
Replacing Sections$6 – $12 per square foot

Concrete Slab FAQs

What is a Concrete Slab?

A concrete slab is a flat, horizontal surface made of poured concrete, commonly used for floors, patios, driveways, and foundations.

When Should I Replace a Concrete Slab?

Replace a concrete slab if it has significant cracks, spalling, or settling that affects its structural integrity.

How Long Does a Concrete Slab Last?

A well-maintained concrete slab can last between 30 and 50 years.

How Long Does a Concrete Slab Take to Dry?

A concrete slab typically takes 24 to 48 hours to dry enough for light use and 28 days to cure fully.

Can I Pour a Concrete Slab Myself?

Pouring a concrete slab is a challenging DIY project that requires proper tools, materials, and experience. Hiring a professional is recommended for larger or more complex projects.

What’s the Difference Between Cement and Concrete?

Cement is an ingredient in concrete. Concrete is a mixture of cement, aggregates (like sand and gravel), and water.

Getting Estimates from Concrete Contractors

When seeking estimates for your concrete slab project, consider the following tips:

  1. Get Multiple Quotes: Compare prices and services from different contractors.
  2. Check References: Look for reviews and testimonials from previous clients.
  3. Verify Credentials: Ensure the contractor is licensed, insured, and experienced in pouring concrete slabs.
  4. Ask About Customization: See if they offer custom solutions to meet your specific needs.

Questions to Ask

  • How long have you been in business?
  • Can you provide references from similar projects?
  • What services are included in your standard package?
  • Do you offer any specialized slab designs?
  • What are your rates for additional services?
  • How do you handle unexpected issues or additional requests?

Concrete Slab Cost Sumary

Concrete slabs are a versatile and durable option for various construction projects. By understanding the costs, benefits, and available options, you can make an informed decision that meets your needs and budget.

For more information on concrete slabs and to explore other cost-related guides, visit our detailed articles on concrete driveway cost and concrete patio cost.

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