(925) 257-6590

Concrete Contractor in Moraga, CA - Driveways and Patios Built for Hillside Lots

Cornerstone Orinda Concrete is a concrete contractor based next door in Orinda, pouring driveways, patios, walks, steps and retaining walls for Moraga homes, with the base dug out and the water sent away from your house.

A smooth concrete patio beneath a timber pergola beside a red-brick house.
  • Licensed and fully insured.
  • Free quotes on site.
  • Expect a reply within 1 business day.

Services in Moraga, CA

Concrete driveway building

Moraga driveways often climb steeply to the garage, so rain runs down them hard. We dig out and pack the base and pitch the slab off your garage door.

Concrete retaining walls

Moraga's sloped yards often need a wall holding soil back for level ground. We pour them with steel inside and drainage behind, so water has a way out.

Concrete steps construction

Plenty of houses here sit above the street, so you need steps up from the drive. We form every rise the same height so nobody catches a toe.

Concrete patio construction

Backyards here often have one flat spot, right against the house. We pitch the patio away from your walls so the water heads for the yard instead.

Concrete floor installation

Workshops and lower-level rooms here often sit on old floors that have cracked or sunk. We pour new concrete floors over a packed, level base.

Concrete pool decks

Pools here are often tucked into a slope, so the deck has to drain away from the house. We give it a textured top for bare, wet feet.

Moraga, CA properties and local conditions

Most of what we see in Moraga comes back to the hills. Lots are cut into slopes, driveways climb or drop to the street, and a lot of the sunken, broken slabs I get called out to look at were poured on fill that was raked flat instead of dug out and packed, so when the dirt settled, the concrete went right along with it. Back on the farm we used to say a fence is only as good as the hole you set the post in, and concrete works the same way. So on every job I start with the subgrade, the ground the slab sits on, and we dig down to firm soil and pack a rock base before a single form goes up.

Then there's the water. On a slope it heads for the low spot, and on too many older jobs that low spot turns out to be a garage door or a back wall. We look at where your water runs before we set the grades, and we tilt the slab away from the house.

Permits, planning and what sets the price in Moraga

Building permits for Moraga homes come from Contra Costa County's Department of Conservation and Development, which reviews and inspects work for the Town of Moraga. Before you can apply, most outside work needs a sign-off from Moraga's Planning Department or its Engineering Department, so that approval usually sets the schedule more than the pour does. When your job needs a permit, we pull it as your contractor and handle the paperwork and inspection calls for our part, and I check with the right office on your job before we start rather than guess. If an engineer or architect is involved, we build from their plans and stay in touch with them. We're licensed and fully insured, and every job is backed by our satisfaction guarantee.

Concrete trucks come in on Moraga Road or St. Mary's Road easily enough, but the steep driveways and tight side streets decide whether we can chute straight from the truck or need a pump, and that's one of the bigger things that moves the price. The rest comes down to size, how deep we dig to reach firm ground, how much old concrete we break out and haul away, and whether the slope calls for a wall or steps. The schedule turns on approvals first, then on curing, the days the concrete needs to gain strength before you walk or drive on it, and your written estimate spells out what's included. We pour on the same kind of hills over in Lafayette and Walnut Creek, so none of this is new to our crew.

Get a written estimate for your Moraga concrete job

Send the form and you'll hear back within one business day, most of the time from me. I'll set a time to come out to Moraga, walk the job with you and look at the ground and the water. The estimate is free, done on site and comes with no obligation.

(925) 257-6590

What happens after you call us about a Moraga job

  1. Call or send the form

    Ring (925) 257-6590 or use the form, and we'll set a time for me to come out. Plan to be home if you can, because the visit goes better when you can show me what bugs you about the old slab.

  2. Walk the job together

    I listen to what you want and look at the ground, the slope, where the water runs and anything in the way, like roots or old pipes. You get a written estimate that says what's included, like whether hauling the old concrete away is part of it, so you know what you're paying for before you decide.

  3. Line up approvals and marking

    Once you're ready, we line up any permits and get the underground utilities marked before we dig. If your job goes through Moraga's staff-level design review, the city says a complete application takes about 60 days, so that wait is what sets the start date.

  4. Pour, finish and walk through

    Our crew lead and finishers dig out and pack the base, set forms, pour and finish, and I'm usually there on pour days. When it's done, I walk the finished work with you and tell you when you can use it before we pack up.

Frequently asked questions

Do I need a permit for a concrete retaining wall in Moraga?

Yes if the wall is taller than 3 feet, because Moraga's permit guidance puts retaining walls over that height on its list of work that needs a building permit. A shorter wall isn't named on that list, so I find out from the right office for your wall before we dig. Either way we build in steel and drainage behind it, because water pushing on the back is what tips walls over.

Do I need a permit to replace my driveway in Moraga?

If the new driveway changes the curb, yes, because any curb alteration in Moraga needs an encroachment permit from the Town Engineer's office. For the slab itself, the city's list doesn't name driveways, so we ask before we break anything up, and we pull whatever your job turns out to need.

How much does a concrete driveway cost in Moraga?

Most of the difference between two Moraga driveway bids is what's underneath and how the concrete gets there, so a steep drive that needs a pump, a deep dig to firm ground or a lot of old concrete to haul off all push it up. The finish matters too, since a broom finish, the light brushed texture that gives tires and shoes grip, costs less than stamped or colored work. If the budget's tight, I'd keep the money in the base and go simple on top, because nobody sees the base on pour day but everybody sees it when a slab sinks.

Will a new concrete driveway in Moraga crack like my old one?

It may get a hairline crack or two, because all concrete shrinks a little as it dries, but on a packed base it shouldn't sink or break up the way a slab on raked dirt does. We cut control joints, shallow grooves that give the slab a straight place to crack, while the concrete's fresh, and we set rebar, the steel inside that holds the pieces together if it does crack. I'd rather pour early in the day than in midday heat, too, because a top that dries too fast turns weak and dusty later.

How long does a new concrete driveway need before I can drive on it in Moraga?

You can usually walk on it within a few days, but driving waits longer because the concrete is still curing and a car weighs a lot more than your feet. I'll give you the dates for your pour at the walkthrough, and if the driveway is your only way to the garage, we talk through parking before we start.

How do I get a level patio on a sloped backyard in Moraga?

Usually by cutting into the hill and holding it back with a low concrete wall, or by stepping the patio down in two levels with steps between them. Either way the slab still needs a slight fall away from the house and somewhere for the water to go, and that's the part I look at hardest on the visit. If the wall ends up over 3 feet, it needs the permit mentioned above.

About Moraga, CA

Moraga is just over the hill from Orinda, where we're based, and it's mostly single-family homes on curving residential streets, with the shops and schools gathered toward the middle.

A lot of the houses here have been around for decades, and so has the concrete around them. We see original driveways with lifted, chipped edges, walks heaved by tree roots, patios that lean toward the back door and short walls that started tipping years ago. Because so many lots sit on a grade, a driveway job here often turns into a driveway plus a step or a low wall, and the slope, the base and where the water lands decide most of the work before we ever get to finishes.

Orinda, CA

Have us walk your Moraga job

A low spot that holds water or a crack that's started to lift usually gets worse, not better, so it pays to have someone look before it spreads to the slab next to it.

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