Concrete Contractor in Clayton, CA - Driveways and Patios Built on a Solid Base
King Concord Concrete Works is a concrete contractor in Concord that builds driveways, patios, walkways, steps, retaining walls and slabs for homes in Clayton, CA. I work on site with a small crew of form setters and finishers.
- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Clayton homes and the ground they sit on
Clayton is a small city in Contra Costa County, right next to us in Concord, and most of the calls we get from here are about a home. We hear about driveways that have cracked or dropped at the garage, back patios that hold water and front walks that have tipped.
With Mount Diablo nearby, a lot of the yards here aren't flat, and that slope shapes the job more than the finish does. Before we talk color or texture, I look at which way the water runs and how much dirt has to come out to get a level, packed base, the same as I do on hillside jobs over in Martinez.
Concrete services for Clayton homes and yards
Concrete driveway building
When a driveway has cracked, sunk at the garage or started holding puddles, we dig it out, pack a new base and pour a slab that sheds water.
Concrete patio construction
A backyard patio here often sits on a slope, so we cut the ground level first and tip the slab gently away from the back door.
Stamped concrete services
Stamped concrete gives a patio or walk the look of stone or brick in one pour, which suits a yard where loose pavers keep shifting.
Concrete sidewalk building
A front walk that's heaved or tipped becomes a trip hazard, so we replace the bad sections on a packed base and cut joints to steer cracks.
Garage floor concrete
A garage floor that's pitted, dusty or cracked across can be broken out and repoured so it's flat, hard-wearing and drains toward the door.
Decorative concrete
Color, exposed stone or a scored pattern can make plain concrete match the house, and we'll show you samples before you pick one.
Concrete retaining walls
On a sloped lot, a concrete retaining wall holds back the hill for a flat yard, with drainage behind it to let water out.
Concrete floor installation
For a shop, a sunroom or an addition, we pour an interior floor on a packed base, with steel and a vapor barrier where the job needs them.
Concrete pool decks
Around a backyard pool, we slope the deck to shed splash water and pick a texture that's less slippery when wet.
Concrete steps construction
Hillside lots often mean steps up to the front door or down to the yard, and we form them so every step is the same height.
Slab foundation building
For an addition, a garage or a backyard unit, we pour the slab the building sits on, after digging out and packing the ground under it.
Foundation installation
When a new structure goes up, we form and pour its foundation to the plans, checking the soil and layout before any concrete arrives.
Concrete parking lot building
For a small property owner with a lot or shared parking area, we pour thicker, reinforced concrete built for heavier, steadier traffic than a home driveway.
Concrete footings
Decks, fences, sheds and patio covers on uneven ground all need solid footings, the concrete pads or trenches that carry the weight down to firm soil.
Foundation raising
If a slab or a corner of the house has settled, we look at why first, then talk through lifting it back and fixing the cause.
Concrete cutting
We cut openings for a new door or drain line, trim a slab back for a planter, or saw in joints an older pour never got.
A free written estimate for your Clayton concrete job
Send the form and we'll reply within one business day to set a time. I'll come out, look at the site with you and put a free estimate in writing, with no obligation to go ahead.
(925) 536-0945- Based in
- Concord, CA 94519
- Hours
- Mon–Fri: 6 AM–11 PM, Sat–Sun: 8 AM–9 PM
Licenses, permits and pricing for Clayton concrete work
Clayton is an incorporated city in Contra Costa County, but contractor licensing is the state's job, so the same rules apply here as anywhere in California. The Contractors State License Board licenses and regulates the state's construction industry to protect consumers, and checking that a contractor's license is current is the first thing I'd do before hiring anyone, us included. We're licensed and insured, with satisfaction guaranteed on every job. On permits, we check with the city or county that covers your address to see what your job calls for, and we handle the paperwork when one is needed.
The price turns mostly on what's under and around the slab: how much old concrete and soft dirt has to come out, how much the yard falls, how close the truck can get, and the size and finish you choose. The schedule turns on the dig-out, any permit the job needs and the time the slab needs before you use it. I'll go through all of that on site, and your own number comes in the written estimate, the same walk-through I give homeowners in Walnut Creek and Pittsburg.
Why Clayton driveways and patios crack and sink
On a yard with any fall to it, water is usually the first problem. Rain runs downhill under and around a slab and washes out the subgrade, the packed dirt and gravel the slab sits on, until the concrete sinks and cracks where the support went. That's why I put the money into the base before the finish. Nobody sees a dug-out, packed base on day one, and it's the first thing a tight budget wants to cut, but a fancy surface on raked dirt just settles with the dirt.
The other call is cracking, and the honest answer is that concrete cracks as it shrinks and the ground moves. We cut control joints, shallow grooves across the slab, so a crack runs along a line we picked instead of wandering across the middle, and we add rebar, steel bars inside that hold the pieces together if a crack does open.
How a concrete job runs when you call us in Clayton
Here's the order things happen in, from your first message to the walk-through, so you know when you'll need to be home and when you won't.
Call or send a message
Call (925) 536-0945 or use the form, and we get back to you within one business day to set a visit. A couple of photos help me come prepared, but they aren't required.
Walk the site together
I come out, look at the slab, the slope and where the water runs with you, and explain the choices and what each one means for upkeep later. The estimate is free and in writing, so you can compare it with anyone else's before you decide.
Paperwork, then the pour
Once you're set, we sort out the city or county side, then dig out, pack the base, set forms and pour with me on site. You don't need to be home on pour day, but we'll tell you when the truck is coming.
Walk the finished job
We clean up, and once the slab has had time to cure, we walk the finished job with you. I'll point out the control joints and what to watch for over the years, so you know what's normal and what isn't.
Concrete contractor questions from Clayton homeowners
Who licenses concrete contractors that work in Clayton, CA?
The state licensing board licenses and regulates contractors across California, and that covers Clayton because it's a California city. The board's job is protecting consumers like you, which is why it's worth asking any contractor for their license before you sign.
How much can a contractor ask for up front on a home improvement job in California?
Under the state licensing board's rules, a down payment can be no more than $1,000, and on a smaller job the limit is a set share of the contract price if that comes out lower. Any other payments have to be spelled out in the contract and tied to the actual value of work done or materials delivered to your home.
How much does it cost to replace a concrete driveway in Clayton?
A driveway's price comes mostly from its size and how much work the ground needs, more than from the concrete itself. Breaking out the old slab, digging out soft dirt and handling a slope add the most, and a plain broom finish, the light brushed texture that gives tires and shoes grip, costs less than stamped or colored concrete. I'll give you your own number in a written estimate after I've seen the site.
How do I find out if my Clayton property is in a fire hazard severity zone?
Look up your address on the State Fire Marshal's fire hazard severity zone map for the City of Clayton, which rates how severe the fire hazard is across the city. The Contra Costa County Fire Protection District adopted updated maps that took effect July 10, 2025, so make sure you're looking at the current one. Concrete doesn't burn, which is one reason people ask about it for patios and paths close to the house.
What causes water to pool on a concrete patio next to the house?
Usually the patio was poured flat or tipped toward the house, or part of it has settled since. Water goes wherever the surface sends it, and a slab falling toward your back door sends it against the foundation. The fix is usually breaking out the bad section and repouring it with a gentle fall away from the house, on a packed base so it's far less likely to settle again.
How long does new concrete need to cure before I can walk or drive on it?
You can walk on a new slab well before you can drive on it, and I'll tell you both times for your job before we pour. Curing is the slow hardening that gives concrete its strength, and it keeps going after the surface feels dry, so parking on it too soon can crack it. We also plan pours around the hottest part of the day, because a top that dries too fast ends up weak and dusty.
Concord, CA
Ask about concrete work on your Clayton home
Changing a plan costs nothing on paper and a lot once concrete is poured, so call (925) 536-0945 or send the form while the choices are still open.