Cost guide
Concrete Foundations Cost
Most projects land between $9,500 and $38,000. At a typical 480 square feet, the mid-range figure is about $18,480, or $22–$55 per square foot installed.
National range
- Low per sq ft
- $22
- High per sq ft
- $55
- Typical size
- 480 sq ft
- Mid-range project
- $18,480
Ranges are compiled from published national cost data and adjusted for local labour and material costs. They are estimates, not quotes.
Cost by project size
Small projects carry the same crew, mobilisation and short-load costs as large ones, so the effective rate rises as the area falls.
| Area | Low | High | Effective per sq ft |
|---|---|---|---|
| 190 sq ft | $4,807 | $12,017 | $25 – $63 |
| 340 sq ft | $7,480 | $18,700 | $22 – $55 |
| 480 sq ft | $10,560 | $26,400 | $22 – $55 |
| 720 sq ft | $15,840 | $39,600 | $22 – $55 |
| 1,060 sq ft | $23,320 | $58,300 | $22 – $55 |
Ranges are compiled from published national cost data and adjusted for local labour and material costs. They are estimates, not quotes.
Per square foot breakdown
What a proposal should itemise, so that two quotes can actually be compared.
Demolition and disposal
Removing the existing surface and hauling it out. Priced by volume and tipping fees, not by area.
Excavation and sub-base
Grading to depth and compacting clean stone. The single largest driver of long-term cracking.
Forming
Setting and bracing edge forms to line and grade. Curves and steps cost more than straight runs.
Reinforcement
Welded wire, rebar mat or fiber. Specification depends on load and soil.
Concrete supply
Mix design, delivery and short-load fees. Higher PSI and fiber add cost per yard.
Placement and finishing
Labour at the pour, including finish type and control joint layout.
Curing and sealing
Cure compound or wet cure, plus optional sealer on decorative work.
What drives the range
Area and thickness
A typical job in this category is about 480 square feet. Below roughly half that size, mobilisation and short-load fees dominate and the effective rate rises above $55 per square foot.
Sub-base condition
Undercutting soft soil and importing compacted stone is the most common change order. It is also the difference between a slab that lasts decades and one that cracks in the first winter.
Demolition and disposal
Removing an existing surface is priced by volume and tipping fees, not by area. Reinforced or double-poured slabs can double this line.
Reinforcement and mix
Fiber, welded wire or a rebar mat, and the specified PSI, move material cost per cubic yard. Heavier vehicle loads justify the upgrade.
Access
If the truck cannot reach the pour, concrete is moved by buggy, pump or wheelbarrow. Each step away from a direct chute adds labour hours.
Finish and detail
Finish work is the widest part of the $22–$55 band. Colour, borders, steps and curves all add finishing labour rather than material.
Regional variation
Dense metro markets
Labour, disposal and parking or street-occupancy permits push the rate to the top of the band, sometimes past it.
Suburban corridors
The middle of the band. Competition among established crews keeps pricing honest and access is usually straightforward.
Rural work
Material and crew travel are the swing factor. Short-load and delivery surcharges hit small projects hardest.
Freeze-thaw climates
Air-entrained mix, deeper stone base and frost-depth footings add cost that warm-climate quotes will not include.
Compared with the alternatives
Installed cost per square foot, indexed to the concrete figures above.
| Surface | Per sq ft | Trade-off |
|---|---|---|
| Poured concrete | $22 – $55 | Baseline. Lowest maintenance of the hard surfaces, and the one that shows every settlement problem underneath it. |
| Asphalt | $12 – $41 | Cheaper to install, needs sealing every few years and softens in summer heat. |
| Pavers | $31 – $116 | Highest install cost, individually repairable, joints need periodic re-sanding. |
| Gravel or stone | $4 – $19 | Cheapest by far, needs topping up, migrates and does not solve drainage or coverage rules. |
Estimate your project
Adjust the size, finish level and ZIP code to see where a project like yours sits in the band.
Low estimate
$10,560
Mid estimate
$18,480
High estimate
$26,400
| Line item | Low | High |
|---|---|---|
| MaterialsReady-mix concrete, stone sub-base, reinforcement, forms and joint sealant. | $4,015 | $10,030 |
| LabourExcavation, grading, forming, placement, finishing and clean-up. | $6,545 | $16,370 |
| Removal and disposalNo existing surface to remove. | $0 | $0 |
| Finish upchargeStandard 4in slab, broom finish, saw-cut control joints. | $0 | $0 |
| Total range$22–$55 per sq ft | $10,560 | $26,400 |
Ranges are compiled from published national cost data and adjusted for local labour and material costs. They are estimates, not quotes. Real proposals vary with sub-base condition, access, slab thickness, reinforcement and local disposal fees.
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Foundations cost questions
- What is the average cost of concrete foundations?
- The national mid-range is about $18,480 for a 480 square foot project, inside a normal range of $9,500 to $38,000.
- Why do quotes for the same job vary so widely?
- Because they are rarely the same job. Slab thickness, reinforcement, how much stone is imported, whether the old surface is hauled away and the finish specified can differ by a factor of two between two proposals for one driveway.
- Is a lower price per square foot always better value?
- A quote well below $22 per square foot usually means thinner concrete, no reinforcement, or a sub-base that was skipped. That saving is spent again within a decade.
- Does project size change the rate?
- Yes. Small projects carry the same mobilisation, short-load and finishing crew costs as large ones, so anything under roughly 240 square feet prices near the top of the band.
- What is not usually included in a quote?
- Unknown sub-grade conditions, utility relocation, engineered drawings where required, and landscape restoration. Ask for those to be priced as named allowances rather than discovered mid-job.
- Does The Concrete Atlas sell this work?
- No. We publish the reference figures and connect homeowners with independent, licensed contractors who pay us for the introduction.
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Ranges are compiled from published national cost data and adjusted for local labour and material costs. They are estimates, not quotes. The Concrete Atlas does not perform concrete work.