Run the tape on 24x24 and you get 576 square feet, the two-car garage that actually works as a two-car garage. Cars in, doors open, and there is still room for the freezer, the shelving, and a workbench. It is one of the most quoted slab sizes in residential work.
Example rates, worked out
| Finish | Example rate | 24x24 (576 sq ft) |
|---|---|---|
| Standard broom | $9 / sq ft | $5,184 |
| Colored | $12 / sq ft | $6,912 |
Example rates only. Your real number depends on your mix cost, your crew, and your market, which is the entire reason to build your own rate instead of borrowing one.
This is a garage pour, price it like one
Since a 24x24 almost always ends up under vehicles, the thickness and reinforcement questions come standard. Daily wheel loads argue for pouring heavier than 4 inch flatwork, and mesh or rebar at the example $1.50 per square foot adds $864 here. If the slab carries the garage walls, thickened edges belong in the plan too. The load case for going thicker is covered in 4 inch vs 6 inch slab, and the garage-specific version of this page lives at 24x24 garage slab cost.
Two more example add-ons at this size: tear-out of an old slab at $4 per square foot is $2,304, and site prep at $2 per square foot is $1,152.
Volume check before you commit a number
At 576 square feet, yardage is worth a sanity pass: square feet times thickness in feet, divided by 27. About 7 yards at 4 inches, about 10.7 at 6. Quoting the 4 inch volume and pouring the 6 inch slab is a margin-killer that a thirty-second check prevents.
Other sizes, same example rates
The concrete slab cost calculator opens preloaded at 24x24 and reruns instantly for any footprint a customer names.
The fastest version of all this is your own rates on your own phone: PriceDesk sets that up in an afternoon, and the first 14 days are free.