Concrete Contractor in Walnut Creek, CA - Driveways and Patios Built on a Solid Base
King Concord Concrete Works is a concrete contractor based in Concord, and we pour driveways, patios, walkways, steps, retaining walls and slabs for homeowners in Walnut Creek, from flat streets near downtown to sloped lots by the hills.
- Licensed and insured.
- Free in-person estimates.
- Expect a reply within 1 business day.
Walnut Creek lots run from flat to steep
Walnut Creek runs from the streets around downtown out to neighborhoods that back onto open space, and Shell Ridge starts only a short way from downtown and climbs all the way to Mount Diablo. Most calls we get here are about the same few things. An older driveway has cracked through or sunk at the garage. A patio pools water by the back door. A front walk has lifted at a joint into a trip edge.
It's the same work we do in Pleasant Hill and Alamo, but here the lot changes the job. On flat ground it's mostly a tear-out and a better base, and closer to the hills we work out where the slope and the water want to go before we plan any concrete.
Concrete services for Walnut Creek homes and lots
Concrete driveway building
When an older Walnut Creek driveway has cracked through or sunk at the garage, we dig out to firm ground and pack a new base before the pour.
Concrete patio construction
If your patio pools water by the back door, we set the slab to fall away from the house and size it to how you use the yard.
Stamped concrete services
Stamped concrete presses a stone or brick pattern into the fresh surface, a good fit for entries and patios where you'd want pavers without weeds in the joints.
Concrete sidewalk building
We rebuild front walks and side-yard paths that have heaved or split into trip edges, setting each section on a packed base so it sits flush.
Garage floor concrete
When a garage floor is cracked, oil-soaked or sloped the wrong way, we break it out and pour a new slab that drains toward the door.
Decorative concrete
Color and exposed aggregate, where the small stones show at the surface, give an entry some character, and we go over how each wears before you choose.
Concrete retaining walls
On sloped Walnut Creek lots, a concrete retaining wall holds the hill back to give you a level yard, with drainage built in behind it.
Concrete floor installation
For an addition, a studio or a workshop, we pour interior floors flat and smooth enough to take the tile, wood or coating on top.
Concrete pool decks
Around a pool, the deck needs a surface that grips when wet and a slope that sends splash water away from the pool and house.
Concrete steps construction
Hillside homes here often have steps from the street to the door, and we rebuild chipped or uneven ones with even risers so nobody catches a toe.
Slab foundation building
For a new garage, addition or backyard unit, we prepare the ground and pour the slab foundation to the approved plans.
Foundation installation
When an addition needs a perimeter foundation rather than a slab, we form and pour it to the engineer's drawings and check the forms before the pour.
Concrete parking lot building
For small property owners with a shop, office or apartment lot, we pour parking areas thick enough for daily traffic and graded so water runs off.
Concrete footings
Footings are the buried concrete under a wall, post or column, and we dig and pour them so the load above sits on firm ground.
Foundation raising
If a corner of your house has dropped and doors stick or floors slope, we find out why and lift and support that section back toward level.
Concrete cutting
We saw-cut openings for drains and doors, clean edges for a partial tear-out, and control joints, the grooves that tell a slab where to crack.
Get a free written estimate for your Walnut Creek concrete job
Send the form and we'll reply within one business day to set a time. I 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
How permits and the city shape a Walnut Creek job
Inside the city limits, permits come from the City of Walnut Creek's Community Development Department, and the city's rule is that you need a building permit when you add a structure or physically change your property. The city's own examples are remodels, roofs and windows rather than concrete, so I don't guess. I check what your address and your job call for, and when a permit is needed, we handle the paperwork. Its approval comes before we can set a pour date, so that wait sits at the front of the schedule. We're licensed and insured. The price moves first with what's hidden on day one, meaning how much old concrete comes out and how much base the ground needs. After that it moves with size, thickness, steel and finish, and your own figure is in the written estimate.
Getting the concrete to the forms is part of the job here. A flat front driveway is simple, but a backyard up a slope or behind tight side yards can mean pumping the concrete or moving it by wheelbarrow, which adds crew time, and I'll tell you at the estimate which one your lot needs. We're based in Concord, so Walnut Creek is close to home, and it's the same kind of work we do from here out to Antioch.
Old bases and big trees behind most repairs here
A lot of the slabs we're called to replace didn't fail on top. They failed underneath. Many older driveways and patios were poured on a subgrade, the ground the slab sits on, that was raked level instead of dug out and packed, so the dirt settled and the concrete sank and cracked along with it. Some were also set with a slight fall toward the house, which is how water ends up pooling against your foundation. We dig down to firm ground, pack a proper base and set the slope so water heads for the street or the yard, all before we talk about finishes.
Mature trees are the other thing we see, with roots pushing up driveway edges and walkway sections. The city protects every tree, dead or alive, that measures 9 inches or more at 54 inches above the ground, and removing one takes a Tree Removal Permit the City Arborist may approve. So we usually plan the new slab, its base and its joints around the roots instead of counting on the tree coming out.
What to expect when you hire us in Walnut Creek
Here's how a job goes from your first call to the final walk-through, so you know who you'll talk to and when you need to be home.
Call or send a message
Call (925) 536-0945 or send the form with a few lines about the job, and we'll set a time for me to come out. You don't need anything ready but an idea of what you want.
Walk the site with me
I look at the slab, the slope and where the water runs with you there, and I explain the choices before anyone signs anything. The written estimate lists the tear-out, base, thickness, steel and finish, so you can see exactly what you're paying for.
Sort permits, then pour
Once you're set, we take care of the city side, and I'm on site with our form setters and finishers for the work. We plan around the city's work days, since construction on a Saturday or a city holiday takes an after-hours permit and none is allowed on national holidays such as Thanksgiving or Christmas.
Walk the finished job
We walk the finished concrete with you and go over when you can walk on it and when you can drive on it. Satisfaction guaranteed on every job, so if something doesn't look right to you, tell me on that walk.
Questions about concrete work in Walnut Creek
How much does a new concrete driveway cost in Walnut Creek?
The cost comes down to the driveway's size, how much old concrete has to come out and how much digging and base the ground needs before the pour. Thickness, steel and finish come next, and stamped or colored concrete costs more than a broom finish, the light brushed texture that gives tires and shoes some grip. If the budget's tight, I'd keep the money in the base and go plainer on the finish, because a nice surface on a soft base cracks just the same.
Do I need a permit to replace my driveway in Walnut Creek?
If the work includes the driveway approach, the stretch that meets the street, or the public sidewalk in front of your house, the city requires an Encroachment Permit. For the rest of the driveway, I check with the city for your address before we schedule anything, and we handle the paperwork when a permit is needed.
How do I apply for a building permit in Walnut Creek?
You apply through the city's Online Permit Portal, because the city no longer takes paper or emailed applications. Before the permit can be issued, the city needs the signature of the legal property owner or a California licensed contractor. When your job needs one, we take care of the application for you.
Does a concrete retaining wall need a permit in Walnut Creek?
A wall taller than 4 feet measured from the bottom of the footing, or one holding back more than 3 feet of soil, falls outside the city's exemption, so plan on a building permit. The exemption also doesn't cover a wall with a surcharge, meaning extra weight such as a driveway, a slope or a building pressing down behind it. The sizes are on the city's building permit FAQs, and I check your wall against them at the estimate.
How long before I can drive on a new concrete driveway?
You can walk on new concrete well before you can drive on it, and I'll tell you both waits for your slab when we finish. The wait is curing, the time the concrete keeps hardening and gaining strength, and a car parked on it too soon can crack or mark a slab that looks done. Plan to park on the street for that stretch, and keep heavy trucks off it longer.
What causes a concrete driveway to crack?
Concrete shrinks as it dries and shifts with the ground under it, so some cracking is normal, and the real goal is deciding where it happens. Aside from a soft base, the ugly cracks usually come from control joints cut late or skipped, or a pour in midday heat that leaves a weak, dusty top. We add rebar, the steel that holds a slab together if it does crack, and cut the joints on time so a crack follows a line we chose.
Concord, CA
Tell us about your Walnut Creek project
Describe the job and ask any permit question you have, and a photo or two of the cracks or the slope lets me arrive already thinking about your base and drainage.