Concrete Contractor in Martinez, CA - Driveways and Patios Built From the Base Up
King Concord Concrete Works is a concrete contractor based in Concord, CA, and we pour driveways, patios, walks, steps and retaining walls for homes in Martinez. I come out myself to look at your slab.
- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Martinez driveways, walks and patios we see most
Martinez is right next door to Concord, and most of the calls we get here are for flatwork, the flat pours like driveways, front walks, patios and garage floors, on houses that have been lived in a long time. A lot of that concrete has done its years and shows it, with cracks across the middle, a corner that's dropped or a walk that's lifted into a trip edge. The jobs look a lot like the ones we do in Pleasant Hill and over in Alamo, and we run them the same way.
Plenty of lots here slope toward the street or away from it, and that shapes the job more than the finish does, because the slope decides where the water goes and how much digging, forming and stepping the new concrete needs.
Concrete work we do on Martinez properties
Concrete driveway building
Driveways on sloped Martinez lots carry cars up and water down, so we dig out the old base, pack new rock and pitch it away from the garage.
Concrete patio construction
A new patio here often replaces an old slab that sank or tipped toward the house, so we fix the grade first and pour it to drain away.
Stamped concrete services
Stamped concrete gives a Martinez patio or entry walk the look of stone or brick in one pour, and we seal it afterward so the color holds up.
Concrete sidewalk building
Walks that have lifted into a trip edge get the broken panels cut out and repoured, and we ask the city first when the work touches the sidewalk.
Garage floor concrete
Older garage floors here often crack and sink near the door, so we break out the damaged slab and pour new on a packed base.
Decorative concrete
Color, exposed stone or scored lines can make a plain slab suit an older Martinez house, and I'll show you samples before you pick.
Concrete retaining walls
Sloped Martinez yards often need a wall to hold a terrace or driveway edge, and we put drainage behind it so water doesn't pile up there.
Concrete floor installation
Workshops and additions on Martinez lots need an interior floor poured flat and level, so tile or wood goes down cleanly on top later.
Concrete pool decks
A cracked deck around a Martinez backyard pool gets repoured with a textured top that grips wet feet, sloped so splash water runs off.
Concrete steps construction
Houses set above the street here often have front steps that pulled away or crumbled, so we form new ones with every step the same height.
Slab foundation building
On a Martinez addition, garage or backyard unit, we pour the slab foundation the plans call for, with the base and steel ready for inspection before the pour.
Foundation installation
When an older house here needs a new perimeter foundation or a section replaced, we dig and form to the engineer's plans before we pour.
Concrete parking lot building
For a Martinez shop lot or apartment parking area, we pour a thicker slab with planned joints so it handles daily traffic and delivery trucks.
Concrete footings
Decks, fences, sheds and porch posts on sloped Martinez yards need footings dug to firm ground, and we pour them to the plan so the posts stay straight.
Foundation raising
When part of a Martinez house or slab has dropped and doors start sticking, we lift and support the low section rather than tearing out what's still sound.
Concrete cutting
We saw-cut openings for drains or utility lines in existing slabs, and cut clean edges where a damaged piece of a Martinez driveway meets good concrete.
Get a free written estimate for your Martinez concrete job
Send the form and we'll reply within one business day to set a time. I'll come out, look at the job 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
What we check before a Martinez job starts
In Martinez, the city's Building Department issues building permits for work inside city limits, to homeowners and licensed contractors alike, so when your job needs a permit, the pour date waits on it. I check with the city about your address before we put anything on the calendar, and we handle the permit paperwork when one is needed. Before you hire anyone, it's worth checking two things, a California state contractor license and the business license the city lists as required for contractors. We're licensed and insured.
The city also lists encroachment and grading permits, so when a driveway runs out to the street or a job moves a lot of dirt, those are questions I ask too. On price, the big movers are the size and thickness of the slab, how much old concrete comes out and gets hauled away, and how much base has to be dug out and packed, and your estimate puts all of that in writing for your job. It's the same crew and the same way of working you'd get on our jobs in Concord and Walnut Creek.
Why Martinez driveways and patios crack and settle
Most of the broken concrete we pull out was poured on raked dirt instead of a dug-out, packed subgrade, the ground and rock the slab sits on, so it settled unevenly as the dirt moved and then it cracked. That's why we spend more of the job on the base than anyone sees on pour day, and if a budget needs trimming, I'd rather cut the fancy finish than the base. Rebar, the steel inside the slab, keeps a crack from spreading apart, but it can't make up for a soft base.
The other thing we see is a patio or walk that falls toward the house, so water pools against the wall instead of running off, and we set the slope before the forms go in so it heads away. If your front walk meets the city sidewalk, the city's permit list includes a sidewalk repair rebate application, which is worth asking the city about before we start.
How a Martinez concrete job runs, start to finish
From your side, there are four steps, and at each one you'll know what's next and what you're paying for.
Call or send us a message
Call (925) 536-0945 or send the form and tell us what's going on, whether it's cracks, sinking or water pooling. We get back to you to set a time for me to come out.
Walk the site with me
I look at the old concrete, the slope and where the water runs with you, and explain the choices that move the price. You get the estimate in writing to read over before you decide anything.
Permits, then the pour
When your job calls for a permit, we sort out the city or county side before the pour gets scheduled. Then I'm on site with our form setters and finishers to dig out, pack the base, set the forms and steel, pour and finish.
Walk the finished job together
When the forms come off, I walk the finished slab with you and explain curing, the stretch when concrete hardens and gains strength, and how long to stay off it. We clean up before we leave.
Questions about concrete work in Martinez
How do I apply for a building permit in Martinez, CA?
Since September 1, 2026, new building permit applications in Martinez go through the city's online portal, for residential, commercial and industrial projects alike. A paper application needs an exception from the Chief Building Official, and when your concrete job needs a permit, we handle that paperwork as part of the job.
When does a concrete contractor need a state license in California?
A contractor needs a license from the Contractors State License Board when the job needs a building permit, uses employees or totals $1,000 or more in labor and materials together. The exception under that figure only covers work with no permit and no employees, and a bigger job can't be split into small contracts to get under it.
What makes a concrete driveway cost more in Martinez?
Slope, access and the finish add the most beyond plain size, because a sloped lot takes more digging and forming and a tight side yard can mean wheeling concrete in instead of pouring straight off the truck. A broom finish, the light combed texture that gives tires and shoes grip, costs less than stamped or colored concrete. I'll show you what each choice does to your number at the estimate.
How do I keep a new concrete patio in Martinez from cracking?
You can't make concrete crack-proof, but you can choose where it cracks, with control joints, shallow cuts we saw into the slab so a crack follows a straight line we picked instead of wandering across the middle. We cut them while the slab is still fresh, because late or skipped joints are how random cracks start, and the packed base does the rest.
How long does it take before I can drive on a new concrete driveway?
You'll be walking on it well before you can park on it, because concrete keeps gaining strength for days while it cures. I'll give you the walk-on and drive-on dates for your job when we pour, and keeping cars off until then is the cheapest protection the slab gets.
Do I have to track construction waste on a project in Martinez?
On applicable projects, yes, the city requires the web-based Green Halo System for construction and demolition waste. Within 30 days after construction ends, the applicant has to submit proof the diversion requirement was met, or the whole diversion security deposit is forfeited, so it's worth raising at the estimate if your job has a permit.
Concord, CA
Plan your Martinez driveway or patio now
Changing the size, the slope or the finish costs nothing while it's on paper and a lot once the concrete is poured.