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What is the average cost for a 20x20 concrete slab?
If you’re planning a new concrete patio, shed foundation, or small garage pad, understanding the average concrete slab price is obviously a great first step. A 20x20 concrete slab covers 400 square feet and is one of the most common sizes used for residential and light commercial projects.
On average, the cost to pour a 20x20 concrete slab ranges from $2,800 to $6,000, depending on a few factors. This breaks down to approximately $7 to $15 per square foot. Let’s take a closer look at what can affect your concrete slab price:
1. Thickness of the Concrete Slab
A standard concrete slab is 4 inches thick, but increasing the thickness to 6 inches for heavier loads will raise the cost.
2. Reinforcements & Finishes
Adding rebar, wire mesh, or a vapor barrier improves strength but also impacts the concrete slab price. Decorative finishes or a stamped surface will also increase costs.
3. Site Prep
If your site needs grading, gravel base installation, or old slab removal, your concrete slab costs will go up accordingly.
4. Location & Labor
Local labor rates and material availability can shift the total concrete slab price. Urban areas typically see higher costs than rural ones.
So, what does this tell us?
For a basic 20x20 concrete slab, expect to invest a few thousand dollars. More if you want upgrades. Always consult with a trusted concrete contractor to get an accurate quote based on your specific needs and site conditions. Ready to pour? Get a free quote from us and find out exactly what your 20x20 concrete slab price will be!