Polished concrete cost guide: 2026 price per square foot

Last updated: October 21, 2026

Polished concrete cost runs $3.83 to $6.25 per square foot installed in 2026. Big open warehouse floors can come in a little under that. The range is wide 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 makes up most of the range. 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 for about double the money, because it’s more than double the 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. 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, and 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. A hardened, fine-ground floor holds up far better on that test 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.

Inside the polish range, 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. That’s why the step up is smaller and not another doubling.

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 we charge for a polish

We sell one polish, Slab Boss Polish. Its base field work starts at $3.58 per 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 per square foot, plus $1.63 a foot of edge. Fills the tiny pores with a cement grout, then cuts the extra back to the slab, for a tighter, more even look. The edges get the same cutback.
• Double-Pass Densification, $0.40 more per square foot. Adds a second pass of densifier, for a tighter hone and more gloss.

With both options, the base field rate comes to $5.18 per square foot. That’s the open floor only. Edge work along the walls, setup, the drive cost (our trip to your site), prep, and decorative work are each their own line. The edges, setup, and drive are what carry a finished job up from this field rate into installed prices like the ones in the table. We show you the pieces instead of one blended number so you can see what you’re paying for.

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 that carries its own price

Aggregate is the sand and stone mixed into concrete. How much of it shows is a separate choice from gloss, and it costs different money because each look takes a different amount of grinding.

Cream is the smooth top paste, with almost no stone showing. The crew takes off the least concrete, so it’s the lowest price.

Salt-and-pepper grinds off about a sixteenth of an inch to show fine sand and small stone. It’s the look homeowners ask for most, and it sits in the middle on price.

Full aggregate is the deepest grind, with river rock showing across the whole floor. It wears out the most diamonds, so it’s the highest price of the three.

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 it grinds a test patch on your own floor, so you see your slab and not a photo of someone else’s.

Why square footage moves 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. 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. If you do one room this year and the next room in two years, 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. The crew routes each crack open, fills it with a semi-rigid polyurethane or epoxy filler, and grinds it flush. Chipped spots (spalls) and pop-outs get the same treatment. It’s slow hand work. It’s also 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. 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 per square foot. It goes on during the polish, not on a second trip, so it adds material and labor without adding a second setup to the job.

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 the finishers 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. The slab is built for the finish before the truck arrives, so nobody pays to rescue it later.

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. That’s slow, costly work.

Polished concrete needs its guard put back on every 3 to 5 years, at $0.72 per 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 $2 apart 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.