Two neighbors can pour identical 400-square-foot patios and pay $2,600 and $5,800 — and both prices can be fair. Concrete slab cost in 2026 runs $6 to $12 per square foot installed for standard gray flatwork nationally, but thickness, site access, base conditions, reinforcement, and finish each move the number by a dollar or more per foot. This guide is pricing only; for how a slab is actually built — thickness rules, base prep, and pour technique — see our concrete slab guide.
The Per-Square-Foot Baseline
For a contractor-installed, 4-inch, broom-finished slab on a prepared gravel base:
- Low: $4.50 to $6 per sq ft — flat lot, easy truck access, simple rectangle, low-cost region.
- Typical: $6 to $9 per sq ft — most residential jobs, most markets.
- High: $9 to $14 per sq ft — thick or heavily reinforced slabs, poor access requiring pumping or wheelbarrows, demolition of old concrete, high-cost metros.
Materials are the smaller share: the concrete itself is roughly $2 to $2.75 per square foot at 4 inches thick (ready-mix runs $130 to $180 per cubic yard — full truck pricing and yardage math are in our concrete cost per yard guide), with gravel, forms, and reinforcement adding $1 to $1.50. Labor and overhead make up the remaining half to two-thirds of every bid.
Cost by Project Type
Real jobs price by the project, not the abstract foot. Typical 2026 installed ranges:
- Shed pad (10×12, 4 in.): $800 to $1,700. Small pours often carry short-load fees that push the per-foot rate up.
- Patio (12×20, 4 in.): $1,500 to $2,900 plain gray; $3,800 to $6,500 decorative.
- Single-car driveway (12×40, 5 in.): $3,400 to $6,200, including thicker mix and rebar.
- Double driveway (20×40, 5 in.): $5,500 to $10,500.
- Garage slab (24×24, 4-6 in. with thickened edges): $4,500 to $9,000.
- Slab-on-grade house foundation: $7 to $16 per sq ft including footings, vapor barrier, and engineering — $12,000 to $30,000 for a modest single-story plan.
- Sidewalk or walkway: $6 to $11 per sq ft; short runs bill near the high end.
What Moves the Price Most
Thickness and strength. Going from 4 to 6 inches adds 50 percent more concrete — roughly $1 to $1.40 per square foot — plus stiffer forms. Upgrading from 3,000 to 4,000 PSI air-entrained mix adds $10 to $20 per cubic yard, about $0.15 to $0.30 per square foot. Cheap upgrades; buy them where loads or winters demand.
Reinforcement. Fiber mix adds about $0.15 per square foot; welded wire mesh $0.35 to $0.65; a tied #4 rebar grid $1 to $2. Bids that differ by exactly this much usually differ by exactly this spec — make every bidder state reinforcement in writing.
Site work. This is the invisible half of the estimate. Removing an old slab costs $2 to $6 per square foot in demolition and disposal. Bad soil needing extra excavation and 6 inches of imported base adds $1 to $2. And if the truck cannot get within about 20 feet of the forms, plan on a pump truck at $800 to $1,200 for the day or extra labor for wheelbarrow relays.
Access timing and load size. Pours under 4 to 5 cubic yards typically eat a short-load fee of $75 to $150, which is why a 100-square-foot pad can cost $12 per foot while the 800-square-foot driveway next door costs $7.
Decorative Upgrades
Finish is the biggest discretionary line item. Over a plain broom finish, expect these installed premiums: colored concrete (integral pigment), add $0.75 to $2 per square foot; exposed aggregate, add $1.50 to $3; stained finishes, add $2 to $4; stamped concrete, $12 to $18 per square foot total for single-pattern work and up to $25 with borders and multiple colors — the design options are covered in our stamped concrete patterns guide. Polished interior slabs run $3 to $8 per square foot over an existing sound slab.
DIY Savings — Real but Earned
Self-performing a slab cuts the cost to materials plus rentals: figure $2.75 to $4.50 per square foot all-in (concrete, gravel, forms, mesh, compactor and tool rentals). On a 12×20 patio that is roughly $900 versus $2,200 hired — a genuine $1,300 saved in exchange for a physically brutal day and finishing skills you get exactly one chance to apply per pour. A sane middle path: hire out the pour-and-finish but self-perform excavation, gravel, and forming, which typically trims 25 to 35 percent off the bid. Whichever route, the step-by-step is in the slab construction guide.
Repair Before You Replace
If you are pricing a new slab because the old one sank or looks terrible, price the alternatives first. Mudjacking or foam lifting a settled-but-sound slab costs $3 to $8 per square foot — details in our concrete leveling guide — and an overlay on a structurally sound, ugly slab runs $3 to $7 via concrete resurfacing. Replacement only clearly wins when the slab is cracked through in multiple directions or the base beneath it has failed.
Region and Season Move the Number
Location shifts slab pricing by 30 percent or more around the national ranges above. Labor-heavy metros — the Northeast corridor, West Coast cities, Denver, Seattle — routinely bid standard flatwork at $9 to $14 per square foot, while the rural Southeast and Midwest see $4.50 to $7 for identical work. Distance from a ready-mix plant matters too: past 25 miles, delivery surcharges climb and some plants decline small orders entirely.
Season is the negotiable part. Concrete crews in northern states compress a year’s work into April through November, and bids in the spring rush price accordingly. Requesting a late-fall pour, or getting on the schedule in February for the season’s first slots, commonly saves 10 to 15 percent. In the Sun Belt the calendar flips — summer slabs pour at dawn and winter is the comfortable season. Whatever the region, a contractor who can slot your job as pour-day filler between larger commercial pours will often sharpen the pencil; flexibility on dates is worth real money.
A Sample Budget, Line by Line
Here is how a typical hired 12×20-foot, 4-inch patio bid at $7.50 per square foot ($1,800) actually breaks down, so you can see where negotiation lives:
- Ready-mix concrete, 3.25 yd delivered: $520
- Gravel base, forms, mesh, and consumables: $260
- Excavation and base labor: $300
- Pour and finish labor (3-person crew, half day): $500
- Overhead, insurance, and margin: $220
Material costs are fixed for everyone; the labor lines are where self-performing the digging and forming, or flexible scheduling, pulls the total down. Conversely, every access problem — a backyard the truck cannot reach, a fence panel that must come down — lands in those same labor lines with a markup.
Getting Honest Bids
Watch the payment structure as closely as the price. Established flatwork contractors ask for little or nothing down on small jobs — the material bill lands after the pour — so a demand for half up front on a $3,000 patio is a flag. Confirm license and liability insurance, get the start window in writing, and ask who pulls the permit; many municipalities require one for driveways and anything over a set square footage, and unpermitted flatwork can surface at resale.
Collect three bids and force them onto the same spec sheet: slab thickness, PSI and air entrainment, base depth and compaction, vapor barrier (yes/no), reinforcement type, joint plan, finish, and curing method. The cheapest number usually got cheap by thinning the gravel or the steel — the two things you will never see again after pour day but will absolutely see in the cracks five winters from now. A fair 2026 rule: if a standard residential slab bid lands between $6 and $9 per square foot with the spec in writing, you are in the right neighborhood.
How to Work Out Concrete Cost per Square Foot for Your Own Slab
Published averages are a useful starting point, but the concrete cost per square foot on your project depends on a few numbers you can calculate at the kitchen table. Running the math yourself before calling contractors helps you spot a bid that is padded, and it also tells you when a quote that looks cheap is missing something important.
Convert Cubic Yards Into a Per Foot Material Figure
Concrete is sold by the cubic yard, so start there. One cubic yard covers about 81 square feet at 4 inches thick, about 65 square feet at 5 inches, and about 54 square feet at 6 inches. Divide your local delivered price per yard by those coverage numbers and you have the raw material cost per square foot at each thickness. Then add a waste and overage allowance of 5 to 10 percent, since subgrade is never perfectly flat and running short mid pour is far more expensive than a little extra in the truck.
Add the other materials on a per foot basis as well: compacted gravel base, wire mesh or rebar, form boards, expansion joint strips, and a vapor barrier for anything inside a building. Together these usually add about as much as the concrete itself on a small job.
Bagged Mix Versus Ready-Mix on a Per Foot Basis
For tiny pours, bagged mix can make sense. A typical 80 pound bag yields roughly two thirds of a cubic foot, which covers about 2 square feet at 4 inches thick. That means a 4 by 4 landing pad needs around eight bags, a manageable afternoon with a wheelbarrow. Once a slab passes roughly 100 square feet, though, the bag count climbs past fifty, the mixing becomes exhausting, and the per foot price of bags overtakes a ready-mix delivery even after short-load fees. Many homeowners find the break-even point lands somewhere around one cubic yard.
Price the Labor and Finish Separately
Ask every bidder to separate materials from labor and finishing. Labor covers excavation, base compaction, forming, placing, screeding, finishing and cutting control joints. A plain broom finish sits at the bottom of the range, while a smooth troweled interior finish, exposed aggregate or stamping can double the labor portion. When two quotes for the same slab differ widely, the gap almost always lives in labor, site prep or finish, not in the concrete.
Compare Against Other Surfaces Fairly
When weighing concrete against pavers, asphalt or gravel, compare the full installed cost per square foot over the expected life. Gravel is cheapest up front but needs regular topping and raking. Asphalt is often a little cheaper than concrete for driveways but needs sealing every few years. Pavers usually cost more per foot but allow individual repairs. A well-built concrete slab that lasts decades with minimal upkeep often wins on lifetime cost even when its initial price is higher.
If you plan to place or finish any of the concrete yourself, wear gloves, long sleeves, eye protection and waterproof boots. Wet cement is caustic and can cause serious skin burns if it soaks through clothing or sits on bare skin, so rinse any contact promptly with clean water.
