Concrete patio construction in Simi Valley CA - a slab built on a solid base
If your old patio is cracked and sinking, we build a new one on a packed base with joints that give cracks a planned place.

- Licensed and insured.
- Free quotes on site.
- Replies within 1 business day.
What goes into building a concrete patio in Simi Valley?
Concrete patio construction in Simi Valley means we form, pour and finish a flat outdoor slab for your house, the same kind of flatwork we do on walks and driveways, set on a base we dig out and pack so it doesn't settle.
Most calls start with a cracked, sunken old slab or a patch of dirt you're tired of tracking inside. The price moves with the size and shape of the patio, the finish you pick, how much old concrete we have to cut out and haul away and how much digging a sloped yard takes. The schedule turns on whether your job needs a permit, how quickly the base comes together and the curing wait, which is the time fresh concrete needs to gain strength before you set a table on it. I'll give you your own figure in a written estimate once I've seen the yard.
How do you know your patio needs replacing?
Cracks that keep getting wider
A hairline crack is normal in a slab, but one that keeps opening, lifts at one edge or runs nowhere near a joint usually means the slab moved more than it should have. Wide cracks catch chair legs and toes, and they get harder to deal with the longer they spread.
One corner has sunk
A low corner or a step down where the patio meets the house usually means the base under that spot was raked flat instead of dug out and packed, so it settled. A slab that has dropped doesn't come back up on its own, and the gap tends to grow.
A top that chips and dusts
If the surface flakes, pits or leaves powder on your shoes, the top was likely weakened during the pour, often from extra water or a rushed finish. It won't heal, so a worn patio only gets rougher until it needs a resurface or a new slab.
How we handle concrete patio construction
Before anything gets dug, I give you a straight comparison of a poured slab and pavers, because they wear differently and one usually suits your yard better than the other. If you pick a slab, we mark it out, dig out and pack the subgrade, which is the ground the slab sits on, then set the forms and the rebar, steel bars that hold the pieces together if the slab cracks. We pour, give it a broom finish so the surface has some grip when it's wet, and lay out the control joints, the cut lines that give cracks a planned place to go instead of wandering across the middle. Then it cures, the wait while the concrete gains strength, and you stay off it until it's ready. If your budget gets tight, I'll tell you to save on the finish before the base, because nobody sees the base on day one but it's the part that decides whether the slab stays flat.
A patio rarely stands alone. If you want it to look like stone or tile, our stamped concrete services press a pattern and color into the same slab, and if you need a way to reach it, our concrete sidewalk building ties a new walk into the patio so the two meet at the same height.
Broom-finish slab
This suits most backyards where you want a tough, grippy floor for a table and a grill at the lowest cost of the concrete options. It's the plain gray slab most people picture, and it's the easiest to keep up.
Stamped or colored slab
This suits you if the patio is what you see from the kitchen window and you want it to look like stone, brick or tile. It costs more up front and needs resealing every so often to hold its color.
Pavers on a packed base
Pavers suit you if you'd rather swap out one broken piece than live with a crack, since they flex with the base instead of cracking. I'll lay the trade-offs against a slab out plainly when I'm out at your place.
Get a written estimate for your new patio
We get back to you within one business day to set a time. I come out, look over the yard and give you a written estimate. It's free, and there's no obligation to go ahead.
(805) 261-5009- Based in
- Simi Valley, CA 93065
- Hours
- Mon–Fri: 6 AM–9 PM, Sat–Sun: 8 AM–10 PM
What happens after you call about a patio in Simi Valley?
Here's how a patio job runs from your first call to the day you set the furniture out, and who you'll be dealing with along the way.
Call or send the form
Call (805) 261-5009 or send the form with your address and a line about the patio you have in mind. We get back to you and set a time for me to come out.
I walk the yard with you
I look over the spot, ask a lot of questions about how you'll use the patio and walk you through the slab-or-pavers comparison. You get a written estimate with your price on it, so you can weigh it without guessing.
We sort out permits and prep
Once you say go, we work out any permit with you and get the site ready by digging out, packing the base and setting the forms. If the city has to review anything, that happens before we pour.
The crew pours, I check in
Our crew lead runs the pour and the finish day to day, and I stop by at the steps that matter most, like the base before it's covered and the joint layout. When it's done, we clean up and tell you how long to stay off it while it cures.
Why Simi Valley homeowners call Custom Simi Valley Concrete for patios
The owner prices your patio
I come out myself to look at the job and write the estimate, so the person asking about your yard is the one who has to stand behind the number. You also see me again on site at the steps that matter.
Pouring concrete since 2017
We've been in business since 2017, and before that I spent years framing houses, which is how I got curious about what sits under them. That's why I watch the base, the forms and the joints that disappear once the slab is down.
Licensed and insured, just ask
We're licensed and insured. Ask about it at the estimate, because it's a fair question to put to anyone who'll be working in your yard.
Cover plans talked through first
If you'd like a cover over the patio someday, I'll ask about it at the estimate and point you to the city's patio cover standard, which is where cover plans start. That way the slab and the cover get planned together instead of one fighting the other.
Every patio we pour is backed by our satisfaction guarantee. Ask for an estimate, and I'll come out and look at the spot with you.
Building patios and walkways in Simi Valley
In Simi Valley, the city's Building and Safety Division handles plan reviews and inspections for projects across the city, and their front counter at (805) 583-6723 is the place to ask whether your patio needs a permit, because that turns on the details of your job and isn't something I'll guess at from the curb. When it does, we tell you so and can pull it as your contractor, or help you if you'd rather pull it yourself. If you're planning to build the patio on your own, the same office's handouts include a Property Owner's Package for owner-builder projects. We're based in Simi Valley and take jobs across the cities around it, so if yours isn't listed, ask us.
The patios here that interest me most are the ones that need some figuring, where the yard slopes, an old slab has to come out first or the new concrete has to meet the back door or a pool edge just right. We run into the same kinds of yards on jobs in Thousand Oaks and Moorpark, and we plan the layout and the base around them the same way.
Questions about concrete patios in Simi Valley
How much does a concrete patio cost in Simi Valley?
A standard 4-inch concrete slab in California usually costs about $9 to $18 per square foot installed, which covers materials, labor and a basic broom finish. That's a statewide figure, not our quote, and a stamped finish, old concrete to remove or a sloped yard pushes a job up from there. I'll give you your own number in writing after I've seen the spot.
Will my new concrete patio crack?
A poured slab usually picks up some hairline cracks over time, and that's normal, because settling, heat expansion and earthquake movement all push on it. Control joints don't stop those cracks but steer them into lines you chose, which is why the joint layout matters so much. If any crack at all would bother you, pavers are worth a look.
How long does a stamped concrete patio last?
One cost guide rates stamped concrete at 25 to 50 years, as long as it's resealed regularly. The sun fades the color and resealing is what holds it, so plan it into your upkeep the way you'd plan repainting trim.
How long do I have to wait before sealing a new concrete patio?
A new patio should cure for at least 28 days before it's sealed, so sealing is a separate step that comes about a month after the pour. If you want a sealed finish, bring it up at the estimate so we can talk through when it fits.
What is the best time of year to pour a concrete patio?
Summer is the hardest time to pour, because national concrete guidance says fresh concrete sets faster in heat, which makes it harder to finish and more likely to crack. A windy, sunny day calls for more care than a calm, humid one. The same guidance notes a pull to add water on hot days, and more water means more shrinkage once the slab hardens, so it's fair to ask any crew how they keep the mix right on a hot pour.
Who can build a concrete patio in California?
A contractor licensed in the state's C-8 concrete classification is the one set up for pouring and finishing flat concrete, and a landscaping contractor can also take concrete work when it's part of improving the grounds around a house. A cover is a separate matter, because state licensing guidance says a C-8 contractor works with wood only as concrete forms, so a C-8 can't contract or pull permits for a lattice patio cover.
Other concrete work that goes with a patio
If plain gray feels too bare for the space you'll be looking at every evening, a stamped surface gives the slab the look of laid stone or brick.
A new patio usually needs a path to reach it, and a poured walk from the driveway or side gate keeps feet off the lawn.
Service areas for patio work around Simi Valley
Custom Simi Valley Concrete is based in Simi Valley, California, and builds patios in the 12 cities below, including Camarillo and Santa Clarita. That list isn't the edge of where we work, so if your city isn't on it, ask us.
Simi Valley, CA
Get your new patio priced and planned
Have the rough size, the finish you want and any cover plans ready when you call (805) 261-5009 or send the form, so the first visit gets straight to what changes your price.
