Concrete Floor Installation in Walnut Creek CA - a slab built for what goes on top
Cracked, sinking or ready for new flooring? We pour a flat slab built around the tile, wood or carpet you plan to put on top.
- Fully licensed and insured.
- Free in-person estimates.
- We reply within 1 business day.
What goes into a new concrete floor in Walnut Creek?
Concrete floor installation in Walnut Creek means we pour a new slab, finish it, cut its joints and let it cure, so you end up with a flat, solid floor you can use bare or cover with tile, wood or carpet.
Most people call us because an old floor has cracked, sunk or ruined the flooring on top of it, or because a garage, room or addition needs a slab for the first time. The price turns mostly on the floor's size, how much old concrete has to come out, how thick it needs to be and whether it gets steel inside, while the schedule turns on any permit, the weather on pour day and the cure before you can use it. Your written estimate lists each of those parts so you can see where your money goes.
How do you know your concrete floor needs replacing?
Cracks that keep spreading
A hairline crack is normal, but cracks that widen, branch off in new directions or leave one side higher than the other usually mean the ground under the slab is moving. The longer it goes, the more of the floor breaks up, and patching won't hold over dirt that's still shifting.
Low spots and uneven floor
If a ball rolls to one corner or furniture rocks no matter where you set it, the slab has usually settled where the dirt under it was never packed. Waiting lets the gap underneath grow, and that can turn a section repair into a full replacement.
Flooring that lifts or stains
Tile that pops loose, wood that cups or vinyl that bubbles and stains often points to moisture coming up through the slab or a floor that's moving. New flooring laid over the same concrete usually fails the same way, so it pays to fix what's underneath first.
How we do concrete floor installation
Tell me what's going on top before we pour, whether it's tile, wood or carpet, because that changes how we build the floor underneath. Then we break out any old floor, dig out and pack the subgrade, the ground and gravel the slab sits on, and set rebar, steel bars that hold the concrete together and keep cracks tight, where the slab calls for it. After the pour we finish the top and saw control joints, straight cuts that give the slab a planned place to crack as it shrinks, and I show you where the joints will go before we pour so you know where cracks are meant to land. Curing comes last, the wait before you use the floor while the concrete hardens and gains strength. If the budget's tight, the base is the part people want to trim because nobody sees it on day one, but I'd rather simplify the finish, because a nice top over dirt that wasn't packed sinks right along with it.
A new floor often meets other work. If it leaves a back door sitting higher than the yard, we can build concrete steps at the same time, and if your project runs out toward the pool, we pour concrete pool decks too, so one crew handles the spots where the two meet.
Floor under tile, wood or carpet
This suits rooms, additions and basements that will get a finished floor, because we build the slab around the covering you name. We trowel the top smooth and flat so your flooring installer starts on a good surface.
Bare concrete floor
This suits garages, shops and utility rooms where the concrete itself is the floor, so the effort goes into a hard, even top that stands up to tires and tools. A light broom finish, fine brushed lines that give your shoes some grip, helps where the floor gets wet.
Get a free written estimate for your concrete floor
We reply within one business day to set up a visit. I come out, look at the floor and give you a free, written estimate, with no obligation to go ahead.
- Based in
- Walnut Creek, CA 94596
- Hours
- Mon–Fri: 7 AM–11 PM, Sat–Sun: 6 AM–10 PM
What happens after you call about a concrete floor in Walnut Creek?
Here's how a floor job runs from your first call to the final walk-through, and who handles each part along the way.
Call or send a message
Call (925) 532-0140 or use the form, and we'll set a time for me to come out. Have the room's size, what's on the floor now and what you plan to put on top handy, because those shape the whole job.
I come out and measure
I look at the room, ask how you'll use the floor and write up an estimate with each part of the job listed. You see the base work, the concrete and any old floor removal on their own lines, so nothing is buried in one number.
We line up permits first
If a permit, an engineer or a designer is part of the job, we get that sorted before we put you on the schedule. That way your pour date doesn't slip while paperwork catches up.
We pour, then walk it
My crew and I do the work with me on site, and we plan pours for weekdays because Walnut Creek requires an after-hours permit for construction on Saturdays and city holidays. When it's done, we walk the floor with you and go over when it's ready to use.
Why Walnut Creek homeowners call us for concrete floors
The owner on every job
I come out to look at every job myself, and my crew does the work with me on site, so the person who wrote your estimate is there checking the base before the pour. I started this business in 2023 after learning the trade on crews around the East Bay.
Fully licensed and insured
We're fully licensed and insured. A floor job brings a crew, a concrete truck and heavy tools onto your property, and that risk shouldn't land on you.
Concrete kept out of creeks
Walnut Creek requires construction crews to follow steps that keep pollutants out of the storm drains, because whatever washes in runs untreated into local creeks and the Bay. We keep washout and saw slurry contained on site, so nothing from your floor ends up in the gutter.
If you're planning a new floor, call (925) 532-0140 or send us a message and I'll come out and take a look.
Concrete floor permits and slab work in Walnut Creek
The City of Walnut Creek requires a building permit when you add a structure to your property or physically change it, so I tell you at the estimate whether your floor needs one. If it does, we handle the application with the city, which runs its permits online, or with the county office if that's who covers your address.
Floor slabs on Bay Area homes typically run four to six inches thick, with garage and basement floors at the thicker end, so how you'll use the room helps decide what we pour. Around here a lot of our floor calls are garages, rooms that need a new slab after the old one cracked, and additions, and we see the same mix on jobs across the East Bay, from Concord to Pleasant Hill.
Questions about concrete floors in Walnut Creek
How much does a new concrete floor cost in the Bay Area?
Concrete slab installation in the Bay Area usually costs about $8 to $16 per square foot, which is the going rate for slabs around here, not our price. Reinforced slabs land higher than plain pads, and staining or stamping isn't part of those usual figures. Your written estimate gives the price for your own floor.
Do I need a permit or a licensed contractor for a concrete floor in Walnut Creek?
You need a licensed contractor whenever the floor needs a permit of any kind, because state rules from the Contractors State License Board require a license then, even on a job under $1,000, and the same goes if the worker hires helpers. For the permit itself, the city rule above applies, and I'll tell you at the estimate whether your floor needs one.
Will a new concrete floor crack like my old one?
Some random cracking should be expected in any slab, even with joints spaced close together, so the honest goal is cracks that land in planned places, not none at all. The joints that give those cracks a path are usually sawn within 4 to 12 hours of the pour, depending on the temperature and the mix, so it's fair to ask any contractor when they'll cut them.
How long does a new concrete floor take to cure before I can walk on it?
You should be able to walk on it within about 48 hours, though concrete takes about a month, 28 to 30 days, to fully cure. It's usually worth waiting about a week before putting heavier loads on it, like a car or heavy furniture.
Do I need a moisture barrier under a concrete floor for tile or wood?
Yes, if carpet, tile, wood or vinyl is going over it, a concrete industry guide says the slab needs protection from moisture rising through it, because that vapor can make the glue fail and the flooring lift, warp or stain. The same guide treats a bit of minor cracking on a slab poured over a vapor retarder, a moisture sheet under the concrete, as a better risk than flooring that fails, so name your covering before the pour.
What causes a concrete floor to turn dusty or flake?
Poor timing on finishing, jointing or curing is the usual cause, and it can leave a dusty top, flaking called scaling, or high and low spots. Pouring in midday heat makes it worse because the top dries out before it's finished, which is why we start pours early in the day.
Related concrete work around a new floor
Concrete pool decks
Concrete around a pool needs a textured top that grips wet feet and enough slope to carry splash water away from the house, not toward it.
Concrete steps construction
When a new floor changes the height at a door, solid concrete steps with even step heights make getting in and out safe and comfortable.
Cities we serve for concrete floor work
Walnut Creek Concrete Works is based in Walnut Creek, CA, and works across the cities around it in the East Bay. The 12 cities below each have their own page, including Lafayette and Danville, but they aren't the only places we work.
Get your new concrete floor measured and priced
The sooner I see the room, the sooner we know what has to come out, what goes underneath and whether a permit needs lining up before a pour date.