Concrete driveway service costs depend on your project and location. Check with a local pro for your specific job.
Concrete slab installation in St. Louis, MO, costs between $4 and $7.50 per square foot on average.
Clay-dense soil will expand and contract with the area's freeze-thaw cycles, which calls for stronger concrete.
Sealants, additives, and reinforcements increase the total project cost.
For a long-lasting and attractive hardscape, always hire a concrete slab professional in St. Louis, MO.
St. Louis homeowners enjoy endless uses for concrete in their dynamic outdoor living spaces, from backyard patios to welcoming driveways. The cost of a concrete slab in St. Louis, MO, ranges from $3,424 and $6,847, or about $5,135 on average. This range accounts for additives, sealants, and concrete densities that help concrete thrive in the four distinct seasons of the region.
St. Louis, MO, sees cold winters and hot, humid summers, both of which affect the clay-dense soil surrounding your home. While the size of the slab will have the largest effect on the cost, additional details unique to the area will play a significant role as well.
On average, a new concrete slab will cost between $4 and $7.50 per square foot or $130 to $170 per cubic yard. You could pay as little as $4 per square foot for thin slabs used in a concrete walkway or sidewalk. On the other hand, you might pay up to $17 per square foot for a thicker and more complicated home foundation.
The cost will be determined by the mixture’s design and the slab’s size and thickness. Other factors—such as subbase preparation, forms, finishing, reinforcements, and the local price of concrete—can also affect concrete slab costs.
| Concrete Slab Size | Square Feet | Average Cost |
|---|---|---|
| 10x10 | 100 | $570 |
| 20x20 | 400 | $2,300 |
| 30x30 | 900 | $5,100 |
Pre-cast concrete slabs often cost between $5 and $15 per square foot for standard applications, though specialized designs might cost at least $29 per square foot. These require minimal on-site labor, but delivery and installation equipment can add to your total bill.
Pre-cast components are often more affordable for designs with a high level of precision or repetition, like home foundations or sidewalk squares. They are also easier to install.
For example, if there is a sudden weather shift in St. Louis, MO, a pre-cast slab will avoid an uneven curing process. Otherwise, a standard slab of concrete poured on-site might be more affordable; these cost between $4 and $12 per square foot.
Professionals use a few types of concrete for residential slab construction, and they vary slightly in price per square foot. The type of concrete that’s best for your project will depend on the load the slab needs to support, as well as soil conditions and climate in your area.
Larger or structural projects may require a soil test in St. Louis, MO, before laying a slab. Not testing the soil could result in concrete upheaval during the next freeze-thaw cycle. For this reason, air-entrainment concrete, high PSI, and proper sealing are necessary for tricky soils with high expansion rates. Speak with a concrete professional near you to determine which type is best, and then use the table below to get an estimate for your total.
| Type of Concrete | Average Cost per Sq. Ft. |
|---|---|
| Standard | $6 |
| Rebar reinforced | $7 |
| High-strength | $8 |
| Fiber mesh | $10 |
What type of concrete slab you need depends on how you’ll be using it—for example, as a foundation for your home, to support an RV, or to define a backyard patio.
Keep in mind that prices will vary even within these categories. The cost of a concrete patio, for example, will total between $2 and $14 per square foot, depending on the type of finish. If you need additional drainage below your concrete, be sure to calculate the cost of adding sand or gravel under the slab.
Due to the area's dense and highly reactive clay soil, drainage is key to protecting both the concrete slab and your home. As a side note, keep this in mind when comparing asphalt vs. concrete, as concrete holds up better on clay soil.
Here's the average concrete slab cost by type of project:
| Project Type | Concrete Slab Size (Sq. Ft.) | Average Cost |
|---|---|---|
| Shed foundation | 80 | $460 |
| Parking pad | 200 | $1,100 |
| Patio | 450 | $2,600 |
| Garage floor | 350 | $2,000 |
| Driveway (1-car) | 240 | $1,400 |
| Driveway (2-car) | 500 | $2,900 |
| RV pad | 640 | $3,650 |
| Mobile home foundation | 1,620 | $21,600 |
| Home foundation | 2,050 | $35,100 |
The thickness of your concrete slab will affect pricing, and most St. Louis projects will require a minimum thickness of four inches. Thicker slabs use more concrete per square foot, requiring more materials and labor to pour. How you intend to use the slab will determine the ideal thickness, which you can then use to estimate your total project cost.
| Project | Average Thickness (In.) | Average Cost per Sq. Ft. |
|---|---|---|
| Patio | 4–6 | $6–$9 |
| Walkway | 4 | $6 |
| Sidewalk | 4–6 | $6–$9 |
| Driveway | 4–8 | $6–$12 |
| Foundation | 8–10 | $12–$18 |
Labor costs between $3 and $5 per square foot to pour a concrete slab, which includes the price of building or setting concrete forms, delivering and mixing concrete, and pouring the slab. On average, labor makes up between one-third and one-half of the total cost of your concrete slab project.
Concrete grade indicates the minimum compressive strength that a concrete mix (made from cement, sand, water, and aggregates) is expected to achieve after 28 days of curing. It determines the concrete’s load-bearing capacity and durability. Higher grade numbers signify more durable concrete, which comes at a higher cost. St. Louis, MO, concrete projects require a good deal of strength, typically with slabs that have a PSI that starts at 3,000. Load-bearing projects, such as garage flooring and driveways, are better around 4,000 PSI and up.
It's important not to confuse this with site grading, which refers to preparing the ground to ensure a stable, well-draining foundation before installing a concrete slab. Site grading costs can increase if the land has a slope, trees, large rocks, or other obstructions. The grading process involves excavation, leveling, and then adding and compacting a subbase, such as sand or gravel.
The concrete slab’s finish—or the surface treatment you choose—also influences pricing. Standard finishes (such as broom and smooth trowel) cost less than decorative finishes (such as stamped, stained, or polished concrete). Here’s how some types of concrete slab finishes affect the cost, noting that prices also vary based on project size, location, and installer rates:
| Concrete Slab Finish | Average Cost Range (per Sq. Ft.) |
|---|---|
| Broom finish | $1–$3 (or included in base price) |
| Smooth trowel finish | $1–$3 (or included in base price) |
| Exposed aggregate | $7–$15 |
| Stamped concrete | $10–$18 |
| Stained concrete | $8–$15 |
| Polished concrete | $3–$12 |
Locations that are difficult to access, like build sites with steep slopes or numerous trees, can drive up your concrete slab costs. Using a concrete mixer is the most cost-effective way to deliver and pour concrete for your home. If that’s not an option, professionals must move and pour the concrete manually, which will significantly increase labor costs.
Most concrete slabs benefit from reinforcement to prevent cracking and improve structural performance. There are two primary types of reinforcement: fiber mesh and rebar reinforcement.
Fiber mesh involves mixing synthetic fibers into the concrete to help control surface cracking and shrinkage.
Rebar reinforcement—the standard option for structural slabs—uses steel bars placed in a grid pattern within the slab to provide strength and resist cracking.
Both types of reinforcements are popular in St. Louis, MO, for concrete slabs and can affect your final cost. Structural elements like concrete steps will include rebar, while walkways and indoor flooring are more likely to feature fiber mesh.
Here’s how the option you choose will affect your pricing:
| Concrete Reinforcement Type | Added Cost per Sq. Ft. |
|---|---|
| Fiber mesh | $2–$3 |
| Rebar | $0.50–$1 |
If your previous concrete slab is on the cusp between repair and replacement, consider the cost of concrete repairs overall. Filling minor cracks and resealing concrete costs as little as $10 for a DIY kit of $1.20 per square foot for sealing, while full concrete resurfacing costs $3 to $5 per square foot. Both repairs are more affordable than the $6 or more per square foot you’d pay to pour a new slab—not including the added cost of demolishing and hauling away the old one.
On the other hand, if you’re dealing with serious damage—such as unlevel concrete, sinking, or structural issues—concrete replacement might be a better long-term option.
A well-installed concrete slab will last far longer than one installed by someone who doesn't consider the region's climate. Be sure to hire an experienced concrete slab pro in St. Louis, MO, who understands the local building cost, soil specifics, and the right installation timing.
While you'll pay between $3 and $5 per square foot on average for labor alone, some contractors will typically quote a flat fee to cover overhead and administrative costs as well as the slab itself. Assume that about half of the totals cover labor, or about $2,500 for the average-sized project.
The City of St. Louis website has a straightforward fee structure for residential construction projects. Fees start around $50 and can reach hundreds of dollars, depending on the scope of the project. Many small projects have a quick permit turnaround time, but it's always best to work with a contractor during this process to ensure it's done correctly.
Due to the difficult soil in St. Louis, consider working with a professional landscaper or excavator in St. Louis who can recommend grading and drainage options before laying a concrete slab. Specialized projects, such as indoor concrete floor finishes, may also require an interior designer.
There are many opportunities for concrete slabs to increase your St. Louis, MO, home value. A new driveway, patio, pool deck, or porch footing all make way for a more attractive home to buyers. The return on investment, or ROI, for concrete slabs is up to 80% in St. Louis, MO, though proper installation is the key to reaching this goal.
To help homeowners plan their next project, Angi provides readers with carefully researched cost data and upholds strict editorial standards. We start with national average project costs, which we collect by analyzing competitor information, retailer material costs, and input from professional contractors. We then apply local price index data to calculate location-specific estimates that reflect what homeowners typically pay in their local area. To do that, we use data from the U.S. Bureau of Economic Analysis (BEA), including its Regional Price Parities (RPPs), which measure price differences across cities. This helps us account for differences in labor, materials, and overall cost of living, so estimates in higher- or lower-cost areas better reflect real-world local pricing.
Every estimate undergoes a thorough editorial review to verify accuracy, consistency, and alignment with observed market conditions.
Want to help us improve our cost data? Send us a recent project quote to [email protected]. Quotes and personal information will not be shared publicly.
Owner Nick Holloran may be young, but his experience runs deep. With over fifteen years in the industry, starting in the family business from an impressively early age, Nick brings a rare combination of seasoned skill and fresh energy to every project. He’s smart, reliable, and incredibly...
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Joint Sealing Solutions, LLCI hired permajack due to a recommendation from my concrete guy. My foundation was sinking all around the perimeter. They offered a permanent solution and delivered. This was not a fun purchase but it was very necessary. Foundation repair is expensive, so Im pleased that these guys were on...
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