Jurupa Valley Concrete Pro lays patios at 4 inches over compacted base, saw-cut into panels on a 10-foot grid, in a color picked to stay walkable in August. Every estimate is measured and written on site.
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Building patios here
A patio fails from underneath or from the middle. Underneath is the base: 4 inches of compacted Class 2 under a 4-inch slab, so nothing bridges a soft seam and drops into it. The middle is the joints, because concrete shrinks as it cures, and a slab wide enough to hold a table, a barbecue and a seating group has to be cut into panels close to square the same day it goes down.
Daniel Reyes founded Jurupa Valley Concrete Pro in 2025, after 12 years finishing flatwork on Inland Empire crews, and he marks the joint grid on every patio himself. On most lots out here the back patio is the largest single pour on the property, wider than the driveway, which is why the outline is pegged at full size and walked with you before a figure is written down.
Every patio is poured against a CSLB C-8 concrete license, with liability insurance on every job standing behind it, and built to the California Residential Code, which fixes the base depth, the slab thickness and the drainage rather than leaving any of the three to preference. What lands in your hands at the end of it is a written workmanship guarantee against defects in how it was built, and the crew that poured the slab is the crew that comes back out on it.
Time to replace it
Concrete shrinks about an eighth of an inch across every 10 feet as it cures, and a wide slab nobody cut into panels finds its own line to do that on. The crack has finished moving but the two halves have not, so a filled line opens again by the second winter.
River sand carries its fines wherever water runs through it, so a leaking irrigation line or one winter storm can scour a channel out from under a patio edge on the flats. What shows is a lip you can get a finger under. The concrete is sound; what held it up has gone.
A dark sealed patio on an open lot here is well past 140 degrees by mid-afternoon in July. That is not a defect, but it is several hundred square feet doing nothing for four months of the year, and no sealer or coating brings the number down far enough to matter.
On the Jurupa Hills slopes a patio sits on a bench cut into decomposed granite, and granite ravels once a cut face is left open to the weather. When the bank below starts shedding, the downhill edge of the slab loses what it stands on and tips toward the drop.
What's included
Standard on every patio, never a line added back later. Each one answers something a deep lot on this side of the Santa Ana River does to a slab that a small tract garden never would.
Whatever is there comes out to soil and leaves the site that day. A new slab laid over an old one inherits every line already in it.
Lots out here are wide enough that a mixer usually reaches the back, so even 600 square feet arrives as one continuous placement.
Caltrans Class 2 base is laid in two lifts and taken down with a plate, so the concrete rests on something drained that has stopped moving.
Four inches deep out of a Riverside County batch plant, and deepened at any point where something heavy is going to stand on it.
The forms are set so the finished surface drops a quarter inch per foot away from the house wall, and that is leveled off before the pour.
Saw-cut the day of the pour, a quarter of the way down, into panels close to square, so shrinkage lands on a line somebody chose.
Where the posts of a shade cover are going to land, the slab is deepened and tied at those points on the day rather than drilled later.
Curing compound down the same afternoon and the surface kept damp for a week, which is what a pour through a summer here needs.
Your options
The same 4-inch slab can be finished four ways, and out here the first question is not how it looks but what it does at three in the afternoon in August, which is what settles whether a patio is used from June to September.
| Option | Midday in August | Lifespan | Upkeep | Days on site |
|---|---|---|---|---|
| Gray broom finish | Warm, still walkable barefoot until about noon | 30 to 40 years | Reseal every 4 to 5 years | Poured in one morning, used in a week |
| Integral-color broom | Coolest in a sand tone, hottest in charcoal | 30 to 40 years | Reseal every 4 years, the color is in the mix | Poured in one morning, used in a week |
| Exposed aggregate | Cooler than a sealed top, and grips when wet | 35 years or more | Reseal every 4 years and rinse it down each spring | Two mornings on site, used in a week |
| Stamped concrete | Sealed and patterned, hot from June to September | 25 to 30 years | Reseal every 2 to 3 years | Two to three days on site, used in a week |
Color does more for surface heat than the material does: a sand tone mixed into the concrete reads cooler underfoot than a charcoal one on the very same broom finish.
Local knowledge
Two things set a patio on this side of the river: how much room the lot gives it, and which of two very different grounds it ends up sitting on.
The city runs from the Santa Ana River bottom up onto the Jurupa Hills, and the two ends behave differently under a slab. The flats through Rubidoux and Mira Loma are river sand that compacts well and drains in an hour, but that will move its fines the moment water gets under an edge. Up on the slopes it is decomposed granite, firm to build on and quick to ravel wherever a cut face is left open. We read the lot against the USDA Web Soil Survey and dig to what the probe finds.
Room is the other half. Lots here are semi-rural and deep, some of them still horse property, so the patio people ask for runs 500 to 700 square feet rather than the 300 a tract garden takes. That much open concrete is a heat surface as much as a floor, and afternoons in the mid-90s mean the color and the shade over it matter more than the pattern on it. We pour across Rubidoux, Pedley, Glen Avon, Mira Loma and Sunnyslope, five of the nine communities the city was made from in 2011.
Our process
Five stages from the day it is pegged out to the day the furniture goes on. One crew from the measurement through to the walk-through, and the finish settled before anything is ordered.
Daniel Reyes pegs the outline at full size, reads the fall off the house and probes the ground, then leaves the figure with you in writing.
You settle the size, where the joints fall, and the color, which is the decision that sets how the finished slab feels in August.
The old surface leaves the site, the subgrade is opened and probed, and base goes in and is compacted in two layers to depth.
Forms go in to the fall you signed off, then the placement and the finish, started at first light in summer so it closes by mid-morning.
Joints saw-cut inside 12 hours, curing compound down, the lot swept. You go over the slab with the owner and the paperwork is signed.
What moves the estimate
Area sets the figure first and the ground below sets the rest. A back patio on a lot out here commonly runs 500 to 700 square feet, and whatever has to be dug away underneath it decides how much of the week goes on machines.
500 to 700 square feet is normal here. A curve or a step down to the yard adds forms, and forms are what the day is spent on.
River sand on the flats takes base and little else. A granite bench on a slope takes a cut, a low wall and the spoil hauled off.
A pergola wants thickened, tied points in the pour. A solid roof is a structure, and that one is drawn and permitted before we dig.
A gray broom finish is one pass. Integral color, exposed aggregate or a stamp each put more hands on the slab before it sets.
The visit costs nothing, the figure is written out on the lot itself, and you get a call back within 1 business day to put a date on it. (951) 903-5460 or send us a message.
Use the form or the phone, whichever suits, and someone is back to you within 1 business day. Daniel Reyes pegs the outline out on the lot and writes the figure standing on it, and you owe nothing for that either way.
Reviews
Three reviews from homeowners on this side of the river, every one of them about a back patio rather than a drive, a wall or a garage floor. Left on Google and Facebook.
“Our lot backs onto the arroyo and we wanted the whole thing done at once, 640 square feet. Daniel pegged it out and told us the charcoal we had picked would cook in July, so we went with a sand tone. Poured in a morning, joints cut that afternoon, and we sit out there in August.”
“The old patio had a crack right across the middle and water was getting under the edge where a sprinkler line had been leaking. They found the washout before they quoted, took the slab out, rebuilt the base and cut the joints on a grid. One wet winter since and it is flat.”
“Ours is cut into the hillside and the bank kept shedding onto the concrete every time it rained. They benched it properly, put a low wall along the downhill side and poured 520 square feet against it. Nothing has moved, and I am not sweeping granite off it any more.”
FAQ
Thickness, joint spacing, permits, surface heat and what the guarantee covers, answered for a wide back patio on a lot here, not for concrete in general.
Four inches, on 4 inches of compacted base, carries furniture, people and a barbecue. Depth only goes up beneath a single heavy point: a spa, a built-in island, a cover post. There the slab is deepened at that spot, rather than the whole area being poured thicker for the sake of one corner of it. What goes down is written on the estimate.
Two to three feet of spacing for every inch of thickness, which puts a 4-inch slab on a grid of about 10 feet, in panels close to square. The cuts go in within 12 hours of the pour and a quarter of the way through the depth. On the wide patios common out here, that grid is the difference between a crack you chose and one the slab chose.
Usually nothing for the slab, but the exempt list in the California Residential Code names driveways and walkways rather than patios, so we put it to the counter instead of assuming. A roof built over the top of it, or built-in cooking with gas and water run out to it, counts as a structure and goes to the Building and Safety Department at the City of Jurupa Valley. We file it and stand the inspection.
A light broom finish, with a sand tone mixed into the concrete and no sealer over it. Color does more than material here: the same slab in charcoal runs far hotter than in a pale gray, and a sealed surface adds to that again. Jurupa Valley sits in the mid-90s through July and August, so on an open lot the color gets picked for the heat first.
Stay off it for 24 to 48 hours. The table and chairs go back at 7 days, and a spa or anything else heavy waits for 28, which is when the mix has reached full strength. Green concrete scores under a dragged chair leg and the mark never lifts out of it. You get those dates written down on the day it is poured.
Yes, if the slab was poured expecting it. Posts want a thickened, tied point beneath them, and adding one to a finished patio means core drilling and digging blind beside concrete you have already paid for. Put in on pour day, the same point is an hour with a shovel. Say where the posts land at the measurement, even if the cover is years away.
Bigger than most people first sketch. A table for six with the chairs pulled out takes about 12 by 14 feet on its own, and once a barbecue run and a seating group go beside it you are at 500 to 700 square feet, which is where most lots on this side of the river settle. The outline is pegged at full size in front of you before anything is priced.
It is written down, and the wording carried on your estimate is this: a written workmanship guarantee against defects in how it was built. It answers for our work, the compaction, the joint layout, the drainage off the house wall and the finished surface. It does not answer for a hairline that follows a cut joint, since that is where shrinkage is meant to land, or for a slab somebody has driven a truck across.
Service area
The eight nearest first, with the straight-line distance from the yard on Limonite Avenue beside each. Open any town to read the page written for it.
Four things that commonly go in around a new patio on a lot this size. Measured at the same visit, and where they touch the slab, formed and poured with it rather than cut in afterward.
A low wall holding the granite bank off the downhill edge of a benched patio.
The run from the back door down onto the new slab, formed and poured with it.
A pool surround taken off the same grid, so one line runs through both slabs.
Integral color, a saw-cut pattern or exposed aggregate, settled before the pour.
One call or one form, and the visit is booked within 1 business day. The outline gets pegged out on your own lot, the figure is written there in front of you, and what you do with it after that is up to you.