Concrete Contractor in Duarte, CA - Driveways and Patios Built on a Solid Base
Cornerstone Sierra Madre Concrete is a concrete contractor based in Sierra Madre, CA, building driveways, patios, pool decks, walls and steps for Duarte homeowners, with careful work on the base, drainage and joints you can't see later.
- Fully licensed and insured.
- Free quotes on site.
- Replies within 1 business day.
Homes and yards across Duarte
Duarte sits right next to Monrovia, a short drive from us in Sierra Madre, and most of our calls here come from homeowners, not businesses. A lot of the houses are single-story ranch homes from the decades after the war. They sit on flat lots in the lower part of the city, and the streets start climbing as you head north toward the mountains.
That age shows in the concrete. Many driveways and patios here are the original pour or a patch over it, and roots, settling and water have had decades to work on them. We see the same thing in older neighborhoods out to Temple City. In Duarte, though, the slope near the foothills adds a second job, because water and loose ground both want to move downhill toward your slab and your house.
Our services in Duarte, CA
- Concrete driveway building
Many older Duarte driveways have cracked and sunk because the dirt under them was only raked flat. We break them out, compact a new base and pour on that.
- Concrete patio construction
Backyard patios here often tip toward the house, so water pools by the wall. We slope the new slab away from your house before we pour.
- Concrete pool decks
Pool decks around older Duarte homes take barefoot traffic, so a cracked or slick surface is a real problem. Our concrete pool decks get a grippy finish and joints where cracks belong.
- Concrete retaining walls
Sloped lots near the foothills often need a wall to keep the yard off a driveway or patio. We build retaining walls on footings, with drainage behind them.
- Concrete steps construction
Front steps on older houses here often settle away from the porch, leaving a lip to trip on. We pour new steps with even risers, tied into the porch.
- Garage floor concrete
Garage floors in older Duarte homes are often cracked and sit low at the door, so water runs in. We pour a new slab pitched out toward the driveway.
What older Duarte lots ask of new concrete
Most of the concrete we replace in Duarte failed from underneath. If a slab goes down on dirt that was raked level instead of dug out and packed, the subgrade, which is just the ground the slab sits on, keeps settling and the slab cracks and sinks with it. Water finishes the job when the slab falls toward the house. So before we pour, I check where your water runs. Then we dig to firm ground, pack a proper base and plan the control joints, the cuts that give the slab a straight line to crack along instead of wherever it likes. It's like setting a fence post. Nobody sees the hole once it's filled, but the hole decides whether the post leans.
Price here mostly turns on the size of the job, how much old concrete we break out and haul away, how much base work your ground needs, any walls or steps, and the finish you pick. How long you're without your driveway or patio turns on those same things plus curing, the days new concrete needs to gain strength before it can take your weight and then your car. Your own figure comes from the estimate I write on site. If the work reaches into the city right-of-way, which usually takes in the part of the driveway that meets the street, the City of Duarte needs a Right of Way Permit from its Public Works Division, and a licensed contractor pulls it, so that part is on us. It's the same way we work in Temple City and the other cities nearby. Does that make sense?
Get a free on-site concrete estimate for your Duarte home
Send the form or call (626) 828-0332 and we'll get back to you within one business day to set a time. I'll come out to your Duarte home myself, look at the slab and the ground around it, and write a free estimate with no obligation. If you hire us, our crew does the work and I'm on site running it.
A look at finished concrete work
Duarte concrete questions answered
Does a new concrete driveway or patio in Duarte need a permit?
It may, and the city's permit list doesn't say either way for a driveway or patio, so we check with Duarte's Building & Safety Division before we start. The division issues building permits for building, altering or repairing structures, and enclosing a patio is on its list, so if a roof or walls are part of your plan, count on a permit for that part. Grading and drainage work each need a separate permit, and when a permit applies, we handle the application as the licensed contractor and walk you through each step.
Do I need a permit for a garden wall or retaining wall in Duarte?
A wall that doesn't hold back soil needs no building permit in Duarte, but the city still has to approve it. That break is only for walls that hold nothing back, so for a retaining wall on a slope, we ask the city what it needs before we dig. Any grading behind the wall can need a permit of its own.
How do I find out if my Duarte home is under City or County rules?
Check your exact location first, because some homes with a Duarte mailing address sit outside City jurisdiction, generally west of Mountain Avenue and south of Duarte Road. The city sends those owners to the L.A. County Department of Building and Safety at 626-574-0941. The city's Community Development FAQ covers it, and I'll sort out which office your job goes to before any work starts.
Does a concrete contractor in Duarte need a California state license?
Yes, a contractor needs a state license for any job that needs a building permit, uses employees, or costs $1,000 or more in labor and materials. The California Contractors State License Board also says a home improvement contractor has to hold that license before bidding, and a bigger job can't be split into small pieces to stay under that figure. Anyone doing business in Duarte also needs a City business license. We're fully licensed and insured, and you're welcome to ask any contractor, us included, for their license before you sign.
How much does a new concrete driveway cost in Duarte?
I can't give you an honest number until I've seen your driveway, because the tear-out, the base work and the finish set the price. A plain broom finish, the light texture swept in for grip, costs less than stamped or colored concrete, and a thicker slab with rebar, the steel that holds cracked pieces together, costs more where heavy vehicles park. The one place I'd tell you not to save is the base, because a pretty top on a bad base cracks just like the old one. Call (626) 828-0332 and I'll come take a look.
What causes cracks in older Duarte driveways, and will a new one crack too?
Most cracks we see here come from a base that settled, tree roots, water running under the slab, and joints that were cut late or skipped. Concrete shrinks as it cures, so some cracking is normal, and I won't promise you a slab that never cracks. What we do is pack the base, keep water moving away, pour early in the day so the top doesn't dry out weak and dusty, and cut the joints on time so a crack lands in a joint instead of across the middle.