Cost of 10×10 Concrete Slab 4 Inches Thick in Construction
A 10×10 concrete slab (100 square feet) with a thickness of 4 inches is one of the most common construction projects. It serves as a base for patios, sheds, small garages, walkways, and other structures. But how much does it actually cost to pour and finish this type of slab?
The total price depends on material costs, labor, reinforcement, finishing, and local construction rates. In this guide, we’ll break down the average cost of a 10×10 slab, the factors that affect pricing, and additional expenses you might encounter.
Average Cost of a 10×10 Concrete Slab (4 Inches Thick)
On average, the cost for a 10×10 concrete slab, 4 inches thick ranges from $600 to $1,200, depending on location and labor rates.
Here’s a cost breakdown:
| Category | Cost Range |
|---|---|
| Concrete (ready-mix) | $150 – $200 |
| Reinforcement (rebar/mesh) | $50 – $150 |
| Labor (pouring & finishing) | $400 – $700 |
| Miscellaneous (gravel, formwork, equipment) | $100 – $200 |
| Total Estimated Cost | $600 – $1,200 |
Calculating the Concrete Needed
To pour a 10×10 slab, 4 inches thick:
- Area: 10 ft × 10 ft = 100 sq. ft.
- Thickness: 4 inches = 0.33 ft.
- Volume: 100 × 0.33 = 33 cubic feet = 1.22 cubic yards of concrete.
Since most suppliers deliver in whole yards, you’ll need to order at least 1.5 cubic yards to account for spillage and waste.
At an average cost of $125–$150 per cubic yard, the concrete alone would be $185–$225.
Factors That Influence Slab Cost
Several factors can change the overall cost of a 10×10 slab:
- Location and Labor Rates – Areas with higher construction demand will charge more.
- Reinforcement – Adding rebar or wire mesh improves strength but raises costs.
- Site Preparation – Grading, excavation, and gravel base may add $200–$500.
- Concrete Finish – Smooth, broom, or decorative finishes affect labor charges.
- Thickness – Increasing from 4 inches to 6 inches significantly increases cost.
- Permits and Inspections – Some cities require permits, adding $50–$200.
- Accessibility – Difficult-to-access sites may require additional labor or pumping fees.
Common Uses of a 10×10 Concrete Slab
- Patios – A small outdoor seating area.
- Shed Foundation – Strong enough to support small to medium storage sheds.
- Walkways – Forms a sturdy base for pathways.
- Hot Tub Pads – Provides stable ground for heavy spas.
- Outdoor Equipment Base – Ideal for air conditioning units or generators.
Pros and Cons of a 10×10 Concrete Slab
✅ Pros
- Durable and long-lasting (30+ years with maintenance).
- Cost-effective compared to pavers or stone.
- Versatile for many construction needs.
- Easy to customize with stains, stamps, or coatings.
❌ Cons
- Can crack without proper reinforcement.
- Requires sealing to protect from weather damage.
- Permanent installation (not easy to remove or relocate).
Additional Costs to Consider
- Concrete Pumping Fee: $300–$500 if trucks can’t access site.
- Gravel Base: $50–$100 for stability and drainage.
- Vapor Barrier: $0.05–$0.20 per sq. ft. for moisture protection.
- Sealer/Coating: $50–$200 depending on type.
- Stamped/Decorative Finish: Adds $4–$10 per sq. ft.
Conclusion
The cost of a 10×10 concrete slab, 4 inches thick, typically falls between $600 and $1,200, depending on site prep, reinforcement, and finish. While the material cost itself is relatively low, labor and preparation can quickly add up. Still, this slab is a solid investment for homeowners looking for a durable and functional foundation in construction projects.
FAQs on 10×10 Concrete Slab Costs
Q1. How much concrete is needed for a 10×10 slab, 4 inches thick?
You’ll need about 1.22 cubic yards, but most order 1.5 cubic yards to allow for waste.
Q2. How long does it take to pour a 10×10 concrete slab?
Generally, it can be poured and finished within one day, but curing takes 7–28 days.
Q3. Do I need rebar for a 10×10 slab?
Rebar or mesh is recommended, especially if the slab will support heavy loads.
Q4. Can I pour a 10×10 slab myself?
Yes, DIY is possible, but hiring professionals ensures proper leveling, reinforcement, and finishing.
Q5. How thick should a concrete slab be for a shed or patio?
- Patio/Walkway: 4 inches is sufficient.
- Heavy Shed/Hot Tub: 6 inches is better.
Q6. Does a 10×10 slab need a permit?
In many areas, yes—especially if used as a permanent foundation. Always check local codes.
Q7. What’s the cheapest way to pour a concrete slab?
DIY installation with minimal reinforcement and a broom finish reduces costs, but durability may suffer.
Would you like me to also create a visual cost comparison table of 4-inch vs 6-inch slabs to show when upgrading thickness is worth the investment?
