How much does concrete cost per square foot in Houston?

Short answer: national cost guides put most installed flatwork at about $6 to $15 a square foot, and plain gray broom-finish concrete at roughly $6 to $12. Decorative finishes push higher. Tearing out an old slab first adds roughly $2 to $6 a foot on top. Those are the honest market ranges for driveways, patios, sidewalks, and slabs alike, and where your job lands inside them comes down to six things you can actually measure.

But before the drivers, one warning. If a bid comes in at $5 a foot or less for a real slab, that isn’t a deal, it’s a slab with something missing.

What moves the number

Six things move the price. If a bid won’t name them clearly, that’s usually the first problem.

• Thickness. Four inches is the residential floor. Anything cars park on we pour at five, and heavy loads go to six. More depth is more concrete per foot, plain and simple. The thickness reasoning is its own article if you want it.

• Steel. Rebar holds a slab together so a hairline crack stays a hairline. It costs money to buy and tie, and it rides on chairs in the middle of the pour, not thrown down on the dirt. You can’t see it once the concrete’s down, which is exactly why a cheap bid skips it.

• Base. Houston clay swells when it’s wet and shrinks hard in August, and that movement is what actually breaks slabs here, not the weight of your truck. Compacted base under the slab spreads that movement out. Skip it and you saved money you’ll spend twice.

• Demo and haul-off. If there’s an old slab to break out, load, and haul to a legal dump, that’s real labor and real disposal fees charged by weight. On the same footprint, replacement almost always costs more than a fresh pour on bare ground, because demo and haul-off ride on top.

• Access. A driveway off the street pours straight off the chute. A patio behind a fence might need a pump or power buggies, and every foot the concrete has to travel is on the quote.

• Finish. A broom finish is the workhorse, and it grips underfoot in the rain. Exposed aggregate and stamped work take more material and more skilled hours on the trowel.

That’s the whole spread between $6 and $15. The pricing page walks each line item in order if you want the long version.

Why $5 a foot is a red flag

Here’s the math nobody shows you.

One Houston supplier lists delivered 3000 PSI ready-mix at about $130 to $145 a cubic yard, and one yard covers about 80 square feet at four inches thick. So the concrete by itself, before a single hand touches it, is roughly $1.60 to $1.80 a foot. Now stack on base material, rebar, forming lumber, a crew to place and finish it, saw-cut control joints, and haul-off. A bid at $5 a foot has to fit all of that into about three dollars after the concrete’s paid for.

It doesn’t fit.

So something gets cut, and it’s almost always the stuff you can’t see after pour day: the base gets thin or skipped, the rebar comes out, the four inches quietly becomes three in the low spots. The slab looks identical the afternoon it’s finished. You find out the difference two or three summers later, when the cracks show up and the corners settle.

A pro quotes in numbers. A cheap bid quotes in adjectives.

Small jobs and the honest exception

Per-square-foot pricing falls apart on little jobs, and we’ll say so plainly.

Where per-foot math stops

• Flatwork minimum: $2,500
• Engineered post-tension foundations: from $10,000, priced on their own track

Crew, truck, and setup cost about the same whether the pour is big or tiny, so a 40-square-foot stoop can’t carry them at $10 a foot. That’s why our flatwork minimum is $2,500. On a job that small the per-foot number looks ugly, and to be straight with you, if all you need is one little pad and nothing else, a good handyman may serve you better than a concrete crew rolling out a mixer truck. We’d rather tell you that than sell you a minimum you didn’t need.

The number gets friendlier as the job grows, because those fixed costs spread across more feet. A full driveway or a wide patio prices better per square foot than a small shed pad does.

One kind of work is priced on a different track entirely: engineered post-tension foundations don’t run on flatwork per-foot math, and they start at $10,000.

The three questions that sort the bids

Ask every contractor the same three, and make them answer in numbers.

How thick is the slab? What’s going under it? And where does the steel sit?

A straight answer sounds like “five inches, three inches of compacted base, number four rebar on chairs on a sixteen-inch grid.” A dodge sounds like “don’t worry, we pour it thick, it’ll last.” One of those you can hold someone to at the forms. The other is just words. Our own answers are published on the spec page and broken down further in the driveway cost article, so you can lay us next to anyone and compare line for line.

Send us rough dimensions and a couple of phone photos and you’ll hear back within 24 hours, with a written quote in your hands within the week. No pressure, and no “starting at” games. Just a real number for your job. Start here.