Am I Being Overcharged for Concrete? How to Read a Concrete Quote

A plain 4-inch concrete slab costs about $4 to $10.50 per square foot installed, depending on your region and who you believe. A quote above that range needs a reason you can point to on the page. This guide shows how to turn any concrete quote into dollars per square foot and dollars per cubic yard, so you can tell a real price from a padded one.

Most people get a single number on a single line and no way to check it. The fix is to rebuild the price yourself, line by line, before you sign.

What a real concrete quote should itemize

A quote that says “concrete patio, $6,800” tells you nothing. A useful one breaks the job into the same parts every pour has.

Line	What it covers	Ask this
Demolition and haul-off	Breaking out old concrete and dumping it	Is it included, and what is the disposal fee?
Excavation and grading	Digging to depth and leveling the ground	How deep, and who hauls the dirt?
Gravel base	Compacted stone under the slab	How many inches, and how many tons?
Forms	Lumber or steel that holds the edges	Included in labor?
Reinforcement	Wire mesh, rebar or fiber	Which one, and what spacing?
Concrete	Cubic yards, strength (PSI), delivery	How many yards, and at what price per yard?
Short load or pump fees	Small-order surcharge, pump truck	Is there one, and how much?
Finish	Broom, trowel, stamp, color, sealer	Which finish, and what does it add per square foot?
Joints and cleanup	Control joints, expansion joints, washout	Who does the sawing and when?

If a line is missing, the price is either hiding in another line or the work is not happening. Both are worth a phone call.

Reverse-engineer the price from square feet to yards

You can check the concrete portion of any quote with arithmetic you can do on a phone.

Cubic yards = length x width x thickness (in feet) / 27.

Take a 20 ft by 20 ft slab, 4 inches thick.

• Area: 20 x 20 = 400 sq ft
• Thickness in feet: 4 / 12 = 0.333 ft
• Volume: 400 x 0.333 / 27 = 4.94 cubic yards
• Add 10% for spillage and uneven ground: 4.94 x 1.10 = 5.43, so you order about 5.5 yards

The Concrete Slab Calculator does this for any size, and the Concrete Calculator handles other shapes.

Now price it. Concrete Network reported a 2025 national average of $179.95 per cubic yard for ready-mix, with a typical range of $160 to $195. Order 5.5 yards:

• Concrete: 5.5 x $180 = $990
• Short load fee, because 5.5 yards is under a 10-yard truck: LawnStarter lists $43 per yard (2026), so 5.5 x $43 = $236.50. Fixr lists $15 to $17 per yard (2025), which would be about $83 to $94 for the same order.
• Material subtotal: about $1,075 to $1,230

That is $2.70 to $3.10 per square foot for the concrete itself. Everything else on the quote is labor, base, forms, reinforcement and profit. A $6,000 quote for this 400 sq ft slab works out to $15 per square foot. After subtracting about $1,200 of concrete, the other $4,800 has to explain gravel, forms, mesh, a crew and a finish. Sometimes it does. If the quote does not list those items, you cannot tell.

What the published ranges say

Different cost guides land in different places, and none of them can see your backyard. These are the figures from the sources I read.

Source	Plain slab	Notes
Concrete Network (2025 data, page updated July 2026)	$6.50 to $10.50 per sq ft	Patio $5 to $18, driveway $5 to $21, stamped $10 to $20
Inch Calculator (guide updated 2023)	about $4 to $8 per sq ft	Materials $2 to $5, labor $2 to $5

Both sources show a wide spread for driveways and patios because the ground, the thickness and the finish differ so much. If you are pricing a driveway specifically, the Concrete Driveway Cost Calculator lets you change the depth and see how the number moves.

Finish surcharges

The finish is where quotes drift upward fastest. The Inch Calculator guide lists these add-ons per square foot:

• Staining or coloring: $3.50 to $7.50
• Stamped design: $10 to $14, or $18 to $20 for elaborate multi-color patterns
• Sealer: $1 to $2

Concrete Network says stamping, staining and polishing all add significantly to the plain slab price, and that stamping rises with the number of textures and the complexity of the pattern.

So a 400 sq ft plain slab at $6.50 to $10.50 comes to $2,600 to $4,200. The same slab stamped at $10 to $20 comes to $4,000 to $8,000. If your quote says “stamped” and sits inside that second range, it is normal. If your quote says “broom finish” and sits inside it, the finish is not the explanation.

Extras that show up as surprises

Some costs are real but easy to leave off a first quote.

• Wire mesh adds about $0.20 to $0.30 per sq ft, and a rebar grid about $2 to $3 per sq ft (Inch Calculator). Ask which one is in the price. The Rebar Calculator tells you how much steel a grid needs.
• Forms and stakes run $50 to $100 in lumber for a small job.
• Expansion joints with sealant and backer rod cost $2 to $4 per linear foot.
• Weekend or holiday delivery adds about $8 per yard, extra unloading time costs roughly $70 per hour after the first several minutes per yard, and winter surcharges run $5 to $7 per yard or more (LawnStarter, 2026).
• Concrete Network lists grading, a delivered gravel or sand base and reinforcement as costs that sit outside the concrete price.

Low-bid red flags

A low bid is not always a trap, but certain gaps in it should slow you down.

1. The price per square foot is under the low end of every range above, such as $3 for a driveway. Concrete alone is about $2.70 to $3.10 per square foot at 4 inches, so there is almost nothing left for labor.
2. The thickness is missing. A 4-inch slab and a 3-inch slab look the same when the concrete is wet, and a 3-inch slab uses about a quarter less material.
3. No base is mentioned. Inch Calculator notes slabs should be at least 4 inches thick, and local code may require more.
4. There is no PSI. Strength changes the price per yard. LawnStarter lists about $143 to $158 per yard for 3,000 PSI and $178 to $193 for 5,000 PSI, including a short load fee.
5. The contractor asks for most of the money up front and cannot show a license or insurance.
6. The quote is verbal.

None of these proves a problem. They are the places where a cheap number usually comes from.

How to decide what to do next

Work through this order before you call a second contractor.

1. Measure the slab and compute cubic yards with the formula above.
2. Multiply by a local price per yard. Call a ready-mix plant and ask for the price, the short load fee and the delivery charge for your zip code.
3. Divide the quote by square feet to get a price per square foot.
4. Compare it to the ranges in the table. If you are inside the range, read the line items. If you are above it, find which line explains the gap.
5. Get two more written quotes that list the same items: thickness, PSI, base depth, reinforcement and finish.

When two quotes differ by a lot, the cheaper one usually has a thinner slab, less base or no reinforcement. Ask the contractor to write down what differs and why. A fair contractor answers that in a sentence.

You can also run your numbers through the Concrete Slab Cost Calculator to see a baseline from your own dimensions and local prices, then use it as your yardstick when the quotes arrive.

Sources

• Concrete Network, Concrete Prices (2025 ready-mix data, page updated July 2026)
• Inch Calculator, Cost to Install a Concrete Slab (page updated 2023)
• LawnStarter, How Much Does Concrete Cost Per Yard in 2026
• Fixr, Cost of Concrete Delivery (updated January 2025)