Concrete Contractor in Concord, CA - Solid Slabs for Older Homes and Yards
C&K Pittsburg Concrete Company is a concrete contractor working in Concord, CA. We pour new driveways, patios, walkways, steps and foundations, cut and replace cracked or sinking slabs, and build retaining walls for sloped yards.
- Fully licensed and insured.
- Free on-site estimates.
- Expect a reply within 1 business day.
Concrete jobs we take on in Concord
The short answer: Yes, C&K Pittsburg Concrete Company takes concrete jobs in Concord. We're based in Pittsburg, a short drive away, and I come out myself to look at your driveway, patio, slab or wall, then run the work with our crew. Homeowners call us most, along with rental owners and small shops.
Most of what we do in Concord is on homes. We see driveways that have lifted or sunk at the joints, back patios that hold water after the sprinklers run, and steps that have pulled away from the porch. Rentals and small shops call us too, usually for a broken walk, a worn parking area or a slab that has to be cut open for new plumbing. We do the same kind of work in Clayton and Pleasant Hill, so a Concord job is right in our usual range.
A lot of the houses here have concrete that's been down for decades, and some sit on sloped lots toward the hills. Older slabs can hide old pipe, thin spots or no steel at all, and a slope changes where the water runs, so I look at both before I price anything.
Why Concord slabs crack, sink and hold water
Most cracked or sinking slabs we see here started underneath, not on top. When a slab was poured on dirt that was only raked level, the subgrade, the ground the slab sits on, keeps settling and the concrete goes down with it. We dig out to firm ground, pack a gravel base in layers and set the slope so water runs away from your house. If the budget gets tight, the base is the last place I'd cut, because you can dress up a finish later but you can't fix a bad base without tearing the slab out.
The next question is always whether the new slab will crack like the old one. Concrete does crack, so we cut control joints, shallow grooves that give it a straight place to crack, and we cut them on time. Where a slab carries a car, we add rebar, steel bars inside the concrete that hold the pieces together if it does crack.
Concrete services we offer Concord homes and shops
Concrete driveway building
When an old driveway has sunk by the garage or lifted at the street, we break it out, rebuild the base and pour a new one.
Concrete patio construction
For a patio that holds water or tips toward the house, we reset the grade so it drains to the yard and pour a new slab.
Stamped concrete services
Stamped concrete gives a patio or walk the look of stone or brick in one pour, and it holds up best when the base is done right.
Concrete sidewalk building
We replace front walks and side paths that have lifted into a trip edge or broken up, so getting to your door or side gate is safe again.
Garage floor concrete
We cut out and repour the bad section of a cracked or sunken garage floor, or replace the whole slab when it's failed across the floor.
Decorative concrete
Colored concrete, exposed stone and saw-cut patterns dress up a plain front entry or patio, and they go on the same packed base as any slab we pour.
Concrete retaining walls
On a sloped Concord yard, a concrete retaining wall holds the hill back and makes flat ground, and we plan drainage behind it so water doesn't build up.
Concrete floor installation
For a shop, a shed, an addition or a converted room, we pour a level interior floor over a packed base, ready for tile, coatings or plain use.
Concrete pool decks
Around a pool, we pour a deck that drains away from the water and the house, with a finish that gives bare feet some grip.
Concrete steps construction
When front or back steps have cracked, settled or pulled away from the porch, we form and pour new ones with even rises so nobody catches a toe.
Slab foundation building
For an addition, a new garage or a backyard unit, we pour a slab foundation on dug-out, packed ground, with steel set where the plans call for it.
Foundation installation
We lay out and pour full foundations for new buildings and additions to the engineer's plans, and we ask the engineer when the ground doesn't match them.
Concrete parking lot building
For a small shop or rental lot, we tear out broken asphalt or concrete and pour a thicker slab with rebar that stands up to cars and deliveries.
Concrete footings
Footings, the concrete pads under a wall, post or deck, spread the weight into the ground, and we dig them to the depth your plans or the city require.
Foundation raising
If a corner of your house has settled and doors stick or floors slope, we find out why first, then raise and support it.
Concrete cutting
We saw-cut old slabs for new plumbing, a wider driveway or a doorway, and check what's inside first, since older slabs here can hide pipe, wire or steel.
Get a free on-site concrete estimate in Concord
Tell us about your Concord project and we'll get back to you within one business day to set up a visit. I come out myself, look the job over and write up a free estimate that says what's included and what isn't. There's no pressure to book.
Permits, licenses and pricing for Concord concrete jobs
Permits for work in Concord go through the city's Permit Center, and its page lets you look up which permits a project needs before you ask for bids. Rules differ from city to city, so we check with the city early in planning, walk you through what they tell us and pull the permit when one is needed, because a review has to clear before we can pour. Before you hire anyone, ask to see two things: a California contractor license from the state licensing board and a City of Concord business license. We're fully licensed and insured.
Concord is a short trip from our base in Pittsburg, the same as Bay Point, so getting a crew and a concrete truck to your street isn't the hard part. What moves the price most is how much old concrete has to come out and how much work the ground needs before we pour. The schedule turns on any permit review and on curing, the time new concrete needs to gain strength before you walk or drive on it, and your estimate spells out what's in the job.
How a Concord concrete job runs once you call
Here's how it goes from your first call to the walk-through at the end. I'm the one you'll see at the start, and I stay on the job with our crew through the pour.
- Step 01
Call or send the form
Call (925) 318-8157 or send the form and tell us what you're seeing, like cracks, sinking or water pooling. We pick up seven days a week, 6 AM to 11 PM, and set a visit time that works for you.
- Step 02
I walk the job with you
I look at the slab, the slope and where the water runs, and I ask a lot of questions, so it helps if you're home. The estimate is free and lists what's in it and what isn't, so you know what you're paying for before anything starts.
- Step 03
Permit, prep and the pour
If the city needs a permit, its review comes before we break ground, so we start on that early. Then our crew digs out, packs the base, sets forms and steel, pours and finishes, with me on site.
- Step 04
Clean up and walk it
We haul off the old concrete and debris, then walk the finished work with you. I'll tell you how long to stay off it while it cures, since that wait is what keeps the top strong.
Concord concrete questions homeowners ask us
Do I need a permit to pour a concrete driveway or patio in Concord?
Sometimes, and the city's permit list for houses and duplexes doesn't settle it for driveways or patios. That list names roofing, water heaters, windows and air conditioning as needing permits, and it's only a partial list, so treat concrete work as a question for the Permit Center rather than a yes or no from the list.
How do I know if my Concord concrete job needs a grading or encroachment permit?
If your job moves soil or reaches into the public right-of-way, the strip along the street, the city says you apply separately for grading and encroachment permits through its Engineering Division. A yard dug out for a big patio or a driveway that crosses the sidewalk can need that on top of a building permit, so I flag it on the first visit.
Does a concrete contractor from outside Concord need a Concord business license?
Yes, the city requires a business license to do business in Concord, and that includes state-licensed contractors whose office is outside the city. It covers a Pittsburg-based crew like ours, and it's a fair thing to ask any contractor you're comparing.
When does a concrete contractor need a California state license?
In California, anyone who builds or alters a structure needs a state contractor license when the job needs a building permit, uses any additional workers, or totals $1,000 or more in labor and materials across its contracts. So if someone offering to pour your slab brings a helper or pulls a permit, they need that license whatever the job costs.
How do I check if my Concord home is in an earthquake hazard zone?
Type your address into EQ Zapp, the California Geological Survey's statewide map tool, and it shows whether the property sits in any of its mapped earthquake hazard zones. That matters most for foundations, raising a house and retaining walls, and if a zone shows up, what the design needs is the engineer's and the city's call, not mine.
What makes a concrete driveway cost more in Concord?
Size, thickness and the steel it needs to carry cars set most of the cost, and street-side work that needs extra city permits adds to it. The finish matters too, since a plain broom finish, a lightly brushed texture that gives tires and shoes some grip, takes less work than stamped or colored concrete. Your estimate puts your own figure in writing.
Tell us about your Concord concrete job
Call (925) 318-8157 or send the form and ask which permits might apply, so we can start on that question before the pour date gets close.