Polished concrete cost guide: 2026 price per square foot

Last updated: October 26, 2026

Polished concrete cost runs $3.83 to $6.25 a square foot installed with us in 2026, before the drive cost (our trip out to your site). Big open warehouse floors can come in a little under that. Bids across the trade swing wider, because two different jobs go by the same name: a quick grind and seal, and a real polish. After that, your slab either helps the crew or fights it, and that moves the price too.

Are you buying a grind and seal or a real polish?

This one choice is the biggest swing between bids. A grind and seal costs the least. A full Level 3 or Level 4 polish, with densifier and guard, costs more. It’s the same slab and the same crew. The polish costs more because it’s a lot more work.

A grind and seal is concrete grinding with 2 or 3 passes of coarse metal diamonds. That flattens the floor and opens up the surface, and then a sealer goes on top. It has no gloss level. The shine comes from the sealer film, not from the concrete, so there’s nothing under it to grade.

A real polish runs 8 or more diamond steps, each one finer than the last. Along the way the crew works a densifier down into the slab. That’s a lithium or sodium silicate liquid that hardens the concrete from the inside. Last comes a guard that soaks in instead of sitting on top.

You can measure the difference. ASTM C779 is a lab test that grinds on a surface to see how fast it wears away, and a hardened, fine-ground floor holds up far better on it than a floor that’s only sealed. That’s why warehouses pick a polish for forklift lanes instead of paying for new sealer every few years.

So the higher price buys hardness that lives in the concrete, not on it, plus 5 or 6 more diamond steps and the crew days they take. A grind and seal is a fair product at a lower price. Just know the sealer film is the part that wears through and costs you again.

Going from Level 3 to Level 4 means a longer run of finer diamonds and a heavier burnish, which is a high-speed buff. The slab already has its densifier by then, so the step up is a smaller one.

The range at the top includes setup. A single rate can sit a little under it.

A quick way to pick:

• A garage, shop, or back room where looks come second: a grind and seal keeps the cost down. Plan on buying sealer again down the road.
• A showroom, a forklift lane, or a floor you’ll live on for years: a real polish, because the hardness is in the slab.
• A slab that isn’t poured yet: plan the polish before the pour, so prep costs less.

What do we charge for a polish?

We sell one polish, Slab Boss Polish. Its base field work starts at $3.58 a square foot. That covers the full diamond run, one pass of densifier, and the stain guard with a burnish.

We don’t sell you a tier and hope it fits. We build the polish from two options:

• Grout and Cutback, $1.20 a square foot, plus $1.63 a foot of edge. We fill the tiny pores with a cement grout, then cut the extra back to the slab, for a tighter, more even look. The edges get the same cutback.
• Double-Pass Densification, $0.40 more a square foot. A second pass of densifier gives a tighter hone and more gloss.

With both options, the base field rate comes to $5.18 a square foot. That’s the open floor only. Edge work along the walls, setup, the drive cost, prep, and decorative work are each their own line, and they’re what carry a finished job up from the field rate. We show you the pieces instead of one blended number so you can see what you’re paying for. For a quote on concrete polishing at your size, the quote tool adds those lines up from your square footage and address.

Not every slab can take the upgrades. We look at the slab first, and we’ll tell you when the extra money would go into a surface that can’t hold it. The full per-foot pricing detail walks through the math. The polished concrete service page covers the process and the finish choices.

How much aggregate shows, and why does that carry its own price?

Aggregate is the sand and stone mixed into concrete. How much of it shows is a separate choice from gloss. It’s set by how deep the first cut goes, and a deeper cut is more grinding.

Salt-and-pepper is our standard look. Every Slab Boss Polish starts with 2 passes of a 30 grit tool, which grinds off about a sixteenth of an inch and shows fine sand and small stone. It’s the look homeowners ask for most, and that cut is already in your price.

Full aggregate is the deepest cut, with big stone showing across the whole floor. It starts with 16 or 10 grit tools and wears out the most diamonds. Cutting deeper costs $67 per hour, counted by the crew hour as worked, because nobody can say how deep the stone sits until we’re cutting.

Cream is the smooth top paste, with almost no stone showing. It’s rare. It starts at 200 to 400 grit and stays in that thin top layer, so it only works on a slab flat enough that the tools never cut through. On a slab another crew poured, the high spots almost always break through, so we rarely offer it there.

This part catches people off guard. The stone sits wherever the finishers left it during the pour, often years before anyone thought about polishing. Nobody can promise an exact look on a slab they didn’t place. An honest crew gives you the look as a target, then grinds a test patch on your own floor so you see your slab and not a photo of someone else’s. Our cut depth guide shows all three side by side.

Why does square footage move the price more than the finish does?

Setup costs the same on every job. The grinder, dust vacuum, diamonds, densifier, and burnisher cost the same to load, haul, set up, and tear down for 400 square feet or 40,000. Spread over 40,000 square feet, that cost almost disappears. Spread over 400, it’s most of your bill.

Size helps in a second way, too. On a big open floor, the large machines run nonstop across wide bays. In a house, the crew stops at every doorway, every cabinet toe-kick, and every closet. They run a hand edger where the big grinder can’t reach, and edge work goes much slower than the open floor.

So a 600 square foot room and a 20,000 square foot warehouse can get the very same finish and still land far apart. The room can run more per foot, and the warehouse can land lower. The gap comes from how much of each floor is open field and how much is edge.

That’s plain math, and it starts working for you once you have 4,000 square feet instead of 400. It’s also why you should price the whole house at once. Do one room this year and the next room in two years, and you pay for setup twice.

What does prep add on top?

Cracked, patched, or coated slabs add to the polish price. All of it happens before a diamond touches the finish you’re paying for.

Crack repair is the usual case. We route each crack open, fill it with a semi-rigid polyurethane or epoxy filler, and grind it flush. Chipped spots (spalls) and pop-outs get the same treatment. It’s slow hand work, and it’s the difference between a floor with repaired cracks and a floor with cracks.

Taking off an old coating is the costly case. Old epoxy, paint, or tile glue has to come off first, and that burns crew hours and diamonds on work you’ll never see. A slab with a failed coating costs more than a bare one, every time.

Flatness belongs here too. ACI 302.1 is the trade’s guide to building concrete floors, and ACI 117 sets how flat a slab should be. Together they describe what a slab ready for polish should have gotten at the pour. A slab that misses those marks may need a thin skim coat or a topping, and that shows up as its own line, not hidden inside a per-foot number.

Dye, patterns, and the decorative tier

Dye that soaks into the concrete runs $0.70 a square foot. It goes on during the polish, not on a second trip, so it adds material and labor without a second setup.

Patterns cost more because they’re layout work before they’re floor work. A simple grid of saw cuts adds a little. A detailed logo in several colors can add a lot more, and we price that per job, because no two logos are the same drawing.

If your slab isn’t poured yet, the math tips your way. When we pour a new slab with the polish already in the plan, prep cost and decorative cost both come down. That’s our Pour-4-Polish path. And when a Slab Boss Pour covers the polish footage on the same quote, field and edge polishing run about 30% less, because there’s nothing to fix before we polish.

Is polished concrete cheaper than tile or epoxy over 15 years?

Usually, yes. The slab is the floor, so there’s no wear layer to replace.

Tile needs grout sealing and chip repair for as long as you own the building. Epoxy needs a topcoat refresh every 5 to 10 years, then a full recoat when the film finally fails. The old film has to be ground off first, and that’s slow, costly work.

Polished concrete needs its guard put back on every 3 to 5 years. That’s a fresh stain guard coat and a burnish, at $0.72 a square foot plus setup. Past that, the hardened slab lasts as long as the concrete does.

Three questions to ask before you sign

Scope hides inside a per-foot number. Two bids that sit close together per foot are often pricing two different floors, and the lower one is sometimes the honest one. Ask every bidder these three:

1. How many diamond steps, and what’s the final grit? Grit is how fine the last diamond is. The answer tells a real polish apart from a grind and seal sold with polish words.
2. Which densifier, and which guard? When a bidder names both, someone made a real choice for your slab. “Sealed” just means a film on top.
3. Is prep its own line? If prep is folded into the per-foot price on a slab nobody looked at closely, somebody will be unhappy about three weeks in.

A contractor who answers all three without flinching is pricing the floor you’re picturing. That’s worth more than the lowest number in the pile.

To see how the floor gets built and how to care for it, read the polished concrete guide.