Footings are the one concrete job where the consequences of getting it wrong compound. An out-of-level or undersized footing shows up later as a door that will not close, a crack running up drywall, and a repair bill many times the cost of doing it properly the first time.
| What changes | Effect on your price |
|---|---|
| Linear feet of footing | Footings are priced by the linear foot. A 24 by 24 detached garage needs about 96 linear feet around 576 square feet of slab. |
| Footing depth and width | Both are set by the load above and the soil below, and in Forsyth County the footing goes below the frost line. |
| Slab square footage | If the job is a monolithic slab or a footing-and-slab, you are paying for both measures at once. |
| Soil conditions | Rock costs more to dig. Soft or wet soil means going deeper or wider to find bearing. Neither is knowable until someone digs. |
| Inspections | Footings are inspected before concrete is placed. That is a scheduling cost as much as a fee, and it is why nobody honest pours the same day they dig. |
| Reinforcement, wire or fibre | Adds roughly 10 to 15 percent over a plain pour. Worth it anywhere a vehicle or a heavy load will sit. |
| Anchor bolts, straps and embeds | Whatever the structure above needs has to be set while the concrete is wet. Small cost, and impossible to retrofit properly. |
| Concrete truck access | Tight lots, long wheelbarrow runs and pump trucks all add labour to the exact same square footage. |
