Concrete contractor in Alameda - driveways and walks that drain right
Cornerstone Orinda Concrete is a concrete contractor based in Orinda, CA, pouring driveways, walks, patios, steps and garage slabs for Alameda homeowners, with the base packed firm and the water sent away from the house.
- Licensed and fully insured.
- Free quotes on site.
- Expect a reply within 1 business day.
Services in Alameda, CA
Concrete driveway building
Many Alameda driveways are a narrow strip beside the house to a back garage. We dig out the old slab, pack a firm base and pour it to drain.
Concrete sidewalk building
Tree roots and age leave plenty of front walks here heaved and uneven. We replace the lifted sections on a packed base so the walk sits flat.
Concrete patio construction
Flat backyards here give water nowhere to go, so old patios often pool by the house. We slope the new slab away, toward the yard.
Slab foundation building
New garages and backyard cottages on low, flat lots need a slab that stays dry and level. We build slab foundations to the engineer's or architect's plans.
Concrete steps construction
Older Alameda houses often sit up off the ground, with front steps that have crumbled at the edges. We form and pour new steps, each one the same height.
Garage floor concrete
Old detached garages here often have thin floors that have cracked and sunk at one corner. We break it out, firm up what's underneath and pour new.
Alameda, CA properties and local conditions
Most of the concrete we tear out in Alameda went in a long time ago, and a lot of it was poured thin onto the subgrade, the ground a slab sits on, which has shifted plenty since then. That's why so many side driveways tip toward the house and front walks have one edge sticking up where a street tree got under them. On a narrow side yard there's often no room for a big machine, so we break out the old concrete with smaller tools and haul it out by hand. Then we dig down to firm ground, bring in base rock and pack it in layers before any forms go up, because the new slab is only as steady as what's under it.
The other thing about Alameda is how low and flat it sits. The city notes that FEMA has mapped many properties here into flood hazard areas, where an owner may be required to carry flood insurance and take steps to reduce flood risk. A slab that falls toward the house only makes that worse, so I check where the water runs before we set a single form, and we slope the new concrete to carry it away.
What we've learned working on Alameda concrete jobs
Permits here go through the city's Permit Center, and the city's rule is that the owner or an authorized agent files an application and gets the required permit before work starts. When your job needs one, we pull it as your contractor and handle the paperwork and inspection calls for our part, and I check with the city on your job before we start rather than guess, because the permit is usually what decides the start date. Before you hire anyone, ask for their state contractor license and a current City of Alameda business license, which the city requires of contractors working here.
Getting here from Orinda means the tunnel and then the crossing onto the island, the same run we make for jobs in Oakland and San Leandro, so we book the concrete truck early to dodge the traffic. What moves the price most in Alameda is how much old concrete we break out and haul off, how much base the ground needs, how close a truck can get, and the size and finish you pick. The schedule turns on the permit and a dry stretch for the pour, and your written estimate spells out exactly what's in your price.
Get a free on-site estimate for your Alameda concrete job
We reply within one business day, and most of the time it's me calling you back to set a time to walk your Alameda job. The estimate is free, done on site and obligation-free, so you can take your time with it.
(925) 257-6590What happens when you call us about an Alameda job
Call us or send the form
Call (925) 257-6590 or send the form and tell us what's going on, whether it's a sinking driveway or a new garage slab. I'll set a time to come out, and it helps if you can be there.
I walk the job with you
I look at the ground, where the water goes and anything in the way, like tree roots or a tight side yard, and ask what the concrete has to carry. You get a written estimate that says what's included, like hauling the old concrete away, so there's no guessing about the price.
Permits, marking, then the pour
Once you're ready, we line up any permit and get the buried utilities marked before we dig, then our crew lead and finishers pack the base, form, pour and finish, and I'm usually there on pour day. The city allows permitted construction Monday through Friday from 7 AM to 7 PM and Saturday from 8 AM to 5 PM, so we keep our work days inside those hours.
We walk the finished work
Before we pack up, I walk the new concrete with you so you can point out anything that isn't right, and our crew hauls off the forms and cleans up. The job is backed by our satisfaction guarantee.
Frequently asked questions
How much does a concrete driveway cost in Alameda?
I can't give you an honest number until I've walked it, because on older Alameda driveways the tear-out and the base work underneath often move the price more than the size does. If you need to trim the budget, trim the finish and not the base, because like we said on the farm, a fence is only as good as the posts you set, and a slab is only as good as what's under it. Your written estimate lists what's included, so you can compare quotes for the same work.
Do I need city approval to replace the front steps on an older Alameda house?
You might, because the city says work that changes a building's exterior needs both a permit and Planning Design Review approval. A new shape, width or material for the steps can change how the front of the house looks, so we check with the city on your job before we form anything.
Does a concrete contractor need a state license in California?
A contractor needs a license from the Contractors State License Board when the project needs a building permit, uses any additional workers, or when labor and materials on its contracts come to $1,000 or more. Ask for the license before you sign anything. We're licensed and fully insured.
What causes concrete driveways to crack and sink in Alameda?
Most of the sinking we see comes from a base that was raked level instead of dug out and packed, so the slab settled right along with the dirt, and from water sitting along the edges on these flat lots. Some cracking is normal because concrete shrinks as it hardens, so we cut control joints, shallow grooves that tell the crack where to go, early enough that it cracks there and not across the middle. Rebar, steel bars set inside the slab, helps hold any crack tight so the pieces don't drift apart.
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 dates for your slab before we leave, since the weather that week changes the wait. That wait is curing, the slow hardening that gives concrete its strength, and parking on it early can crack a slab that would have been fine. With a single side driveway you'll be parking on the street for a bit, so bring it up at the estimate if that's a problem.
How do I keep water from pooling next to my house on a flat Alameda lot?
Slope the concrete away from the house and give the water somewhere to go once it leaves the slab, like the street, a lawn or a drain. On flat ground the fall can be slight, so I check where the roof and the yard send water before we form, and we set the slab to carry it off. What we won't do is pour a new patio higher against the siding to cover a low spot, because that just walks the water into the wall.
About Alameda, CA
Alameda is an island city of mostly older homes, with Victorians, shingled cottages and bungalows on the inner streets, postwar houses and newer townhomes farther out, and shopping streets running through the middle. Lots are flat and fairly tight, and plenty of houses have a single driveway down the side to a detached garage out back, much like the older blocks we work on in Berkeley.
That shapes the job. Old concrete usually comes out in tight quarters, and on ground this low and flat, the slope we give a new slab matters more than how it looks on pour day.
Explore the services
Orinda, CA
Ask about your Alameda concrete job
We answer (925) 257-6590 into the evening and on weekends, so you can ask about your project and what the city needs for it after work.