24x24 Concrete Slab Cost for a Two-Car Garage
A 24x24 concrete slab, the standard two-car garage, costs $4,848 to $8,080 installed at 4 inches with rebar. Adjust the thickness or enter a ZIP below for a local number.
LIKELY INSTALLED PRICE
$6,464
Our installed range for this 24×24 ft, 4-inch slab: $4,848 – $8,080 ($8.42 – $14.03 per sq ft)
In plain terms: that's about the size of a two-car garage pad, and roughly 45% of the price is the crew's labor.
- DIY materials
- $3,354
- Concrete
- 7.11 yd³
- Bagged mix
- 353 80-lb bags
- Delivery
- 1 truck
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$2,949
- Labor$2,437
- Overhead and profit (20%)$1,077
All 8 line items
| Item | Qty | Material | Labor | Total |
|---|---|---|---|---|
| Site setup, layout and cleanup | 1 job | $100 | $56 | $156 |
| Excavate and grade subgrade | 576 sqft | $0 | $639 | $639 |
| Forms, stakes and form release | 96 lf | $115 | $213 | $328 |
| Compacted crushed-stone base | 9.96 ton | $448 | $184 | $632 |
| #4 rebar, tied on chairs | 816 lf | $814 | $362 | $1,176 |
| Ready-mix concrete, 3,500 psi, delivered | 7.47 yd3 | $1,299 | $166 | $1,465 |
| Place, screed and broom finish | 576 sqft | $29 | $746 | $775 |
| Sawn control joints | 96 lf | $144 | $71 | $215 |
| Subtotal × overhead and profit (20%) = midpoint | $6,464 | |||
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 $4,848 – $8,080. DIY: 353 bags or 7.47 yd³ of ready-mix.
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Turn this price into an estimate for your customer →Cost by thickness for 24x24 (576 sq ft)
4 in · patios, sheds
$4,848 – $8,080
7.11 yd³ · 353 bags · about $6,464
5 in · garages, driveways
$5,081 – $8,468
8.89 yd³ · 440 bags · about $6,774
6 in · shops, RV pads
$5,410 – $9,017
10.67 yd³ · 528 bags · about $7,213
- Typical use
- A standard two-car garage floor or a detached garage.
- Thickness
- 4 inches with rebar at a minimum under cars; 5 to 6 inches if trucks or a lift will use it.
- Planning note
- Plan anchor bolts and a thickened edge for the walls before the pour; they can't be added cleanly afterward.
24x24 concrete slab cost for a two-car garage
The range covers the slab, 10.0 tons of gravel, 816 linear ft of rebar and a smooth finish crew. Footings or a thickened edge for the walls are priced on the garage calculator.
How much concrete a 24x24 slab takes
It's 7.11 yd³ at 4 inches and 7.47 yd³ ordered with waste, on 1 truck. Forms run 96 linear ft.
Garage door and drainage details
Ask for the slab to slope toward the door so meltwater runs out. The door opening often gets a step-down or apron where it meets the driveway.
Pouring a 24x24 concrete slab
Most crews form and set steel one day and pour the next. Finishing 576 square feet takes several people with power trowels. Rain in the forecast is the usual reason a pour gets moved.
Using this figure with contractors
It's an estimate built from wage data and estimated material prices, not a quote. Share the line items with bidders so everyone prices the same scope.
DIY vs pro for this 24x24 pour
Materials alone come to $3,354, about 52% of the $6,464 midpoint contractor price. The difference is $3,110 of labor, equipment, delivery and contractor overhead across 8 line items. At 7.47 yd³ with waste the pour fills 1 mixer truck, so ready-mix is the practical route even for a DIY pour.
Other popular slab sizes
- 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
- 20x30 concrete slab cost$4,983 – $8,306600 sq ft · 7.41 yd³ at 4 in
- 20x40 concrete slab cost$6,562 – $10,936800 sq ft · 9.88 yd³ at 4 in
- 30x30 concrete slab cost$7,324 – $12,206900 sq ft · 11.11 yd³ at 4 in
Compare with the next sizes
Garage concrete slab cost calculatorAll slab sizes and the full calculator
Frequently asked questions
How thick should a 24x24 garage slab be?
Many builders pour 4 to 5 inches for cars and 6 inches for trucks. Code or your engineer may require more.
Can I pour a 24x24 slab myself?
It's a big DIY job: 7.11 yd³ needs several finishers working at once. Most owners hire the pour and do the prep themselves.
Does a 24x24 slab need footings?
If walls sit on it, yes, usually a thickened edge or separate footings. The foundation calculator prices that version.
How much does a 24x24 slab cost per square foot?
$8.42 – $14.03 installed at national prices. Enter your ZIP to swap in local cement-mason wages.
For contractors
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