12x12 Concrete Slab Cost
A 12x12 concrete slab costs $1,279 to $2,132 installed at national prices, and the concrete alone is 1.78 yd³. Use the calculator to change the finish or enter a ZIP for local wages.
LIKELY INSTALLED PRICE
$1,705
Our installed range for this 12×12 ft, 4-inch slab: $1,279 – $2,132 ($8.88 – $14.80 per sq ft)
In plain terms: that's about the size of a shed pad or a small patio, and roughly 45% of the price is the crew's labor.
- DIY materials
- $721
- Concrete
- 1.78 yd³
- Bagged mix
- 89 80-lb bags
- Delivery
- 1 truck, short load
An estimate, not a bid. A contractor's price depends on your site, access and timing.
What changes the price
Where the money goes
- Materials$775
- Labor$646
- Overhead and profit (20%)$284
All 9 line items
| Item | Qty | Material | Labor | Total |
|---|---|---|---|---|
| Site setup, layout and cleanup | 1 job | $100 | $56 | $156 |
| Excavate and grade subgrade | 144 sqft | $0 | $160 | $160 |
| Forms, stakes and form release | 48 lf | $58 | $107 | $164 |
| Compacted crushed-stone base | 2.49 ton | $112 | $46 | $158 |
| 6x6 W1.4 welded wire mesh | 144 sqft | $53 | $32 | $85 |
| Ready-mix concrete, 3,500 psi, delivered | 1.87 yd3 | $325 | $41 | $366 |
| Short-load delivery fee | 1 job | $85 | $0 | $85 |
| Place, screed and broom finish | 144 sqft | $7 | $187 | $194 |
| Sawn control joints | 24 lf | $36 | $18 | $54 |
| Subtotal × overhead and profit (20%) = midpoint | $1,705 | |||
National prices until you enter a ZIP.
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Compare a contractor's price with the range for these inputs.
What next
Get two or three quotes and compare them with $1,279 – $2,132. DIY: 89 bags or 1.87 yd³ of ready-mix.
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Turn this price into an estimate for your customer →Cost by thickness for 12x12 (144 sq ft)
4 in · patios, sheds
$1,279 – $2,132
1.78 yd³ · 89 bags · about $1,705
5 in · garages, driveways
$1,313 – $2,188
2.22 yd³ · 110 bags · about $1,751
6 in · shops, RV pads
$1,395 – $2,326
2.67 yd³ · 132 bags · about $1,861
- Typical use
- A small patio or a hot tub pad.
- Thickness
- 4 inches with mesh for a patio; a hot tub pad is often poured thicker under the tub footprint.
- Planning note
- Slope the slab slightly away from the house so rain runs off instead of pooling at the door.
Cost for a 12x12 concrete slab, line by line
The estimate prices concrete, 2.5 tons of base, 144 sq ft of wire mesh, forms and finishing. Labor is the line that changes most once you add a ZIP.
Is a 12x12 slab big enough for a patio?
It fits a round table for four with room to pull the chairs out. It gets tight once you add a grill, so many people go to 12x16.
12x12 pad for a hot tub
Most two- to four-person tubs fit on a 12x12 pad with space for steps. Check the tub's own pad requirements, and add a conduit for the power feed before you pour.
What the range does and doesn't cover
It covers a new slab on prepared ground with a broom finish. It isn't a bid: removal of an old patio, a pump truck or permit fees change the price and are added in the calculator or at quote time.
DIY vs pro for this 12x12 pour
Materials alone come to $721, about 42% of the $1,705 midpoint contractor price. The difference is $984 of labor, equipment, delivery and contractor overhead across 9 line items. At 1.87 yd³ the pour is under the short-load threshold, so bagged mix or a shared truck avoids a delivery fee.
Other popular slab sizes
- 10x10 concrete slab cost$941 – $1,569100 sq ft · 1.23 yd³ at 4 in
- 10x12 concrete slab cost$1,094 – $1,823120 sq ft · 1.48 yd³ at 4 in
- 10x20 concrete slab cost$1,625 – $2,708200 sq ft · 2.47 yd³ at 4 in
- 12x20 concrete slab cost$1,922 – $3,203240 sq ft · 2.96 yd³ at 4 in
- 20x20 concrete slab cost$2,874 – $4,789400 sq ft · 4.94 yd³ at 4 in
- 24x24 concrete slab cost$4,848 – $8,080576 sq ft · 7.11 yd³ at 4 in
Compare with the next sizes
Concrete patio cost calculator calculatorAll slab sizes and the full calculator
Frequently asked questions
How many bags of concrete for a 12x12 slab?
89 80-lb bags at 4 inches, waste included. At that count a small ready-mix order is usually less work.
Is a 12x12 slab cheaper than pavers?
Poured concrete usually costs less than pavers for the same area. Pavers are easier to repair, while a slab needs less upkeep.
Can I extend a 12x12 slab later?
Yes, a new section can be doweled into the old edge. The joint will show, so plan the finish to match.
Does a 12x12 patio need a permit?
Often not for a ground-level patio, but it varies by town. HOAs sometimes have their own rules, so check both.
For contractors
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