Concrete Contractor in Clayton, CA - Solid Bases on Sloped Yards
C&K Pittsburg Concrete Company is a concrete contractor pouring driveways, patios, steps and retaining walls in Clayton, CA. We take on the trickier jobs too, like cutting into old slabs, walls on steep yards and raising settled foundations.
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Concrete work in Clayton, from driveways to hillside walls
The short answer: C&K Pittsburg Concrete Company is a concrete contractor based in Pittsburg, CA, and we take jobs in Clayton, from new driveways and patios to steps, garage floors and retaining walls. I come out myself to look at your job and write the estimate before our crew sets a single form.
Clayton is a small, mostly residential city at the foot of Mount Diablo, right next door to Concord. Most of our calls here come from homeowners who want a driveway, back patio, front walk or set of steps redone, along with the odd rental or shop owner who needs a slab or a small lot.
A lot of the yards here aren't flat. When a driveway climbs from the street or a patio sits at the bottom of a slope, the job turns on where the water goes and on the subgrade, the ground the slab sits on, so that's what I look at first.
Slopes, runoff and tired slabs on Clayton lots
Water is the big one on a sloped lot. Rain running down a yard finds the edge of a driveway or patio and washes out the dirt underneath, so the slab sinks and cracks, or the water runs the other way and pools against the house. Before we set a form, we look at how the yard drains and pitch the new slab away from your foundation. Where the hill keeps pushing, we'll talk with you about a retaining wall instead of patching the same crack again.
The other call we get a lot is for older driveways and patios that have broken into pieces or dropped at one corner, usually because the base under them was raked flat instead of dug out and packed, so it settled with the dirt. We break the old slab out, dig down to firm ground and pack new base in layers before anything gets poured.
Concrete services for Clayton homes and lots
Concrete driveway building
When a driveway has cracked into pieces, sunk at the garage or sends water toward the house, we tear it out, rebuild the base and pour new.
Concrete patio construction
A patio fits when the back yard is bare dirt or tired pavers. On a sloped lot we pitch it so rain runs away from the house.
Stamped concrete services
Stamped concrete gives a patio or walkway the look of stone or brick in one pour, so there are no loose pavers to settle or sprout weeds.
Concrete sidewalk building
When a front walk has heaved at a joint and catches toes, or tips toward the lawn, we replace it with an even walk that sheds water.
Garage floor concrete
A garage floor that's cracked, pitted or holding puddles in one corner can be broken out and repoured on a packed base that carries a parked car.
Decorative concrete
Decorative concrete covers color, exposed stone and custom finishes for a front entry or patio that should look like part of the house, not an afterthought.
Concrete retaining walls
On sloped yards here, a retaining wall holds back a hillside that keeps slumping onto a patio, path or driveway, so the flat ground stays usable.
Concrete floor installation
We pour interior concrete floors for shops, sheds and additions, set level and smooth so whatever goes on top, from tools to tile, sits flat.
Concrete pool decks
A pool deck has to drain away from the water and stay grippy underfoot when wet, so we choose its slope and finish with both in mind.
Concrete steps construction
Front steps that have cracked or pulled away from the porch get rebuilt with every step the same height, because an odd one is what trips people.
Slab foundation building
For an addition or a backyard unit, we build the slab on a packed base with rebar inside, the steel that holds it together if the ground moves.
Foundation installation
When the plan calls for a raised floor or a foundation that steps down a slope, we dig, form and pour it to the engineer's drawings.
Concrete parking lot building
For a shop, rental or small business lot, we pour concrete built for daily traffic and pitched so rain drains off instead of pooling in the stalls.
Concrete footings
Footings are the concrete under posts, walls and decks, and on a slope they're what keeps a patio cover or fence from leaning a few years in.
Foundation raising
When a corner of the house has dropped, doors stick and cracks run up the walls, we find out why first, then raise and support that side.
Concrete cutting
We saw into old slabs for plumbing, a new drain or a doorway, and cut out damaged sections cleanly so the rest of the slab stays put.
Get a free on-site estimate for your Clayton concrete job
Send the form and we'll get back to you within one business day to set a time for me to come out to your Clayton property. The estimate is free and done on site, and there's no obligation or pressure to book.
What changes a concrete job in Clayton
Clayton is its own incorporated city in Contra Costa County, and rules differ from city to city, so we check with the local building office early in planning and walk you through what they tell us. When a permit is needed, we take care of pulling it, and the start date waits on it, which is why we ask early. On the contractor side, the Contractors State License Board licenses and regulates the construction trades across California, Clayton included, so ask whoever you hire for their state license. We're fully licensed and insured.
The price mostly turns on how big the slab is, how much old concrete comes out, how deep we dig to reach firm ground, how close the truck can get on a hilly lot and the finish you pick, whether that's a plain broom finish, the light texture that keeps it from getting slick, or stamped and colored work. Timing turns on the permit, if there is one, and on curing, the days the concrete needs to harden before it takes weight, and your estimate gives you the figure for your own job. We do the same work in Hercules and Antioch and in other cities around Pittsburg, so call even if yours isn't listed on this site.
What happens after you call us about a Clayton job
Here's how a job runs from your first call to the final walk-through, so you know who you'll be talking to and what you'll have in hand at each step.
- Step 01
Call us or send the form
Call (925) 318-8157 or use the form, and tell us a little about the job and where in Clayton it is. We'll set up a time for me to come out.
- Step 02
I walk the site with you
I look over the slab, the slope and where the water runs, and I ask a lot of questions, so it helps if you're home. You get a written estimate that says what's included and what isn't, so you can compare it line by line.
- Step 03
We sort out rules and timing
If you go ahead, we check with the local building office and pull a permit when one's needed. Then we set the pour date, and I tell you how long you'll be off the driveway or patio.
- Step 04
Pour, clean up and walk it
I run the job alongside our crew, from digging out and packing the base to the pour, the finish and cutting the control joints, the grooves that tell the slab where to crack. When it's done we clean up and walk the finished work with you.
Clayton concrete questions homeowners ask us
How much does a new concrete driveway or patio cost in Clayton, CA?
We price each Clayton job after seeing it, because the slope, the old concrete coming out and the base work move the number as much as the size does. If you need to trim the budget, cut the finish, not the base, since the base is buried on day one but it's what keeps the slab from settling and cracking.
What causes concrete driveways in Clayton to crack, and will a new one crack too?
Most cracking we see comes from a base that settled, water running under the slab, or joints that were cut late or skipped, so the slab cracked wherever it wanted. Concrete shrinks a little as it cures, so we pack the base, pitch the slab to drain and cut the joints on time so any cracks land in the grooves. We also skip pouring in the heat of the day, which can leave a weak, dusty top.
How long does it take before I can drive on a new concrete driveway?
You can walk on a new driveway well before you can park on it, because concrete keeps gaining strength for days after the pour and a car weighs a lot more than you do. The wait depends on the mix and the conditions on pour day, so I give you both dates when we schedule the job and help you plan where the cars go in the meantime.
How do I find out if my Clayton home is in a fire hazard zone?
Look your street up on the State Fire Marshal's fire hazard map for Clayton, which rates how severe the fire hazard is in each part of the city. The county fire district's updated maps took effect July 10, 2025, so go by the current version. If your lot is in a zone, mention it at the estimate and we'll ask the building office whether it changes anything about your project.
How much can a contractor ask for up front on a home improvement job in California?
Under the state licensing board's rules, the down payment can be no more than $1,000 or 10 percent of the contract price, whichever is less. Every other payment has to be listed clearly in the contract and match work already done or materials already delivered to your home, so check that before you sign.
Can you build a concrete retaining wall on a steep yard in Clayton?
Yes, a wall on a steep yard is the kind of puzzle job we're known for, and what matters most is the footing under it and the drainage behind it, because trapped water is what pushes a wall over. A taller wall or one holding up a driveway may need an engineer's design, and if yours does, I'll tell you so on the first visit.
Ask about concrete work on your Clayton home
Call (925) 318-8157 any day of the week from 6 AM to 11 PM, or send the form, so you can reach us before work or after dinner.