Polished concrete cost per square foot is the first question on almost every call we take, and the honest answer is a range with reasons attached. Commercial polished concrete generally lands between four and twelve dollars per square foot installed, and the spread inside that range is not arbitrary. Four things drive it, and you can assess all four before you ask anyone for a number.
All West Surface Prep polishes existing slabs. We do not pour concrete. What that means for pricing is that the slab you already have sets most of the cost before we quote anything.
The four variables that move polished concrete cost per square foot
Slab condition. This is the largest single driver and it is the one owners underestimate. A flat, clean, structurally sound slab with no coating on it prices at the bottom of the range. However, a slab carrying old adhesive, thin set, epoxy, or carpet glue has a removal scope in front of the polishing scope. Add spalling, popouts, or failed patches and there is a repair scope in front of both.
Level of aggregate exposure. A cream polish stays in the top layer of paste and requires the least material removal. Next, a salt and pepper finish cuts through the cream into fine aggregate. Full aggregate exposure cuts deeper still, and every pass down is more tooling, more time, and more consumables. Deeper exposure also means the floor has to be flat enough to expose evenly, which sometimes adds grinding scope on its own. The Concrete Polishing Council of the ASCC publishes the aggregate exposure chart most specifications reference, and it is worth pulling up before you compare bids.
Sheen level and grit progression. A 400 grit satin finish and a 1500 or 3000 grit high gloss are different jobs. Each additional grit step means another full pass across the entire floor.
Square footage and access. Ten thousand square feet in one open bay costs less per foot than ten thousand square feet split across forty rooms with door thresholds and fixed casework. Meanwhile, mobilization, edge work, and equipment handling do not scale down.
What polished concrete cost per square foot looks like in practice
These are ranges we see on commercial work in Colorado and the surrounding states, not quotes.
Roughly four to six dollars per square foot. Sound slab, no removal required, cream or light salt and pepper exposure, moderate sheen, large open area. New construction and warehouse work often sits here.
Roughly six to nine dollars per square foot. Some coating or adhesive removal, moderate repair, salt and pepper exposure, higher sheen, or a floor plan with real edge and detail work. Most retail and tenant improvement work sits here.
Roughly nine to fifteen dollars per square foot. Significant surface preparation or repair, full aggregate exposure, high gloss, dye or stain, or heavily compartmentalized space. Restoration of an older slab in an occupied building sits here.
Edge work runs higher per foot than field work everywhere in that table, because it is hand equipment and slower.
Costs that show up separately
Joint filling. Control joints in a polished floor need a semi rigid filler if the floor takes wheeled traffic. Leaving them open in a warehouse guarantees joint edge spalling. We price this by linear foot, not square foot. See concrete joint filling.
Repairs. We quantify spall repair, patch removal, and crack treatment after opening up the slab, because a floor under carpet does not show its condition until the carpet is gone.
Dust control and containment. Occupied buildings need negative air, poly, and off hours scheduling. That is real cost and it belongs in the bid rather than in a change order. See concrete dust control.
Densifier and sealer. Most polishing scopes include this, but confirm it. A polish without densification is not a polished floor, it is a ground floor. See densifying and sealing.
Why the cheapest number is often the most expensive
The bid that comes in two dollars under everyone else has usually done one of three things: skipped the densifier, quoted a lower grit than the spec, or assumed the slab is clean without looking under the flooring. As a result, all three surface later, and all three cost more to correct than they saved.
Ask any bidder three questions. First, what grit does the progression end at. Second, which densifier, applied at what stage. Finally, what does the bid assume about the existing slab, and what happens to the price if that assumption is wrong.
Polished concrete cost per square foot compared with epoxy
Against a comparable epoxy system, polished concrete usually costs less to install on a sound slab and materially less to own, because there is no recoat cycle. Over a fifteen to twenty year hold, that gap is larger than the difference in any two bids.
Next step
Give us square footage, the age of the building, what is on the floor now, and how the space will be used. In most cases that is enough for a real range rather than a placeholder. If the slab has to come open before anyone can price it honestly, we will tell you that instead of guessing.
All West Surface Prep has worked on existing concrete since 1990, out of Commerce City, Colorado, serving Colorado, Wyoming, New Mexico, Utah, South Dakota, and Arizona. Call (303) 573-7737 or request an estimate at allwestsurfaceprep.com.