Nearly every lot in Chino Hills is a pad graded into a hill, and the slab that fails first is poured across the join between cut ground and fill. Riverside Concrete Pro reads the pad before quoting.
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Chino Hills is about 80,374 people living almost entirely on pads cut into hills. The ground under your patio was engineered before the house was framed, and that is where a slab is decided.
The city incorporated in 1991 and the tracts filling it went up from the early 1980s on graded lots, the uphill half cut into native ground, the downhill half built up with compacted fill, and a line between the two somewhere under the yard. Cut and fill settle at different rates for years. Anything laid across that line takes the difference as one crack along the join. We find the line from the grading plan and test holes, then thicken the slab and run steel through the crossing.
Clay is the other constant. The soils in these hills swell with winter rain and shrink back through the dry months, so a pad moves every year, and on ground with fall across it that shows at the edges first, a walk that steps up at a joint, a wall leaning out at the top. Slope compounds it: a drive off Peyton Drive or up in Carbon Canyon can be steep enough that the finish has to hold a car in the wet, and keeping a yard level means a retaining wall more often than a deeper cut.
Eight jobs that come up again and again on the graded tracts, from Rolling Ridge down to Los Serranos, where the pad is engineered fill and the finish has to clear an association before anyone pours it.
A Chino Hills drive is short and steep, a banked approach off a hillside street to a garage set above or below the road. We pour it with a texture that stays safe wet, key the bottom into the apron so it cannot creep, and carry steel across the cut-and-fill line beneath it.
A back yard here is level only because the pad was graded that way, and the flat part sits partly on fill. A poured patio needs the base recompacted and the joints set to the fill line rather than the house wall, so it cracks where it was planned to, not across the seating area.
Stamping gives a Chino Hills yard stone or plank without joints for grit. It also has to pass the tract committee, so we take the pattern and the color from what your association has already approved, and seal the surface against the sun these slopes hold all afternoon.
Side walks on these lots run along a grade and step down beside the house to reach the back yard. We build the fall in so winter rain leaves toward the swale instead of the foundation, reinforce the panels crossing filled ground, and keep the risers even where the slope changes.
A Chino Hills garage sits on the same graded pad as the house, and a floor settled at one end shows it in a door that no longer seals. We break out the old slab, recompact the base, and pour a flat floor with the fall taken out toward the apron so nothing pools at the back wall.
Color, exposed aggregate and saw-cut patterns give an entry or a courtyard more than gray, and on a street where every house came off the same tract plan that is most of what sets a frontage apart. We work to what the association permits and finish the slab to hold its color.
Keeping a level yard on a hillside lot is a wall job before it is a slab job. We pour walls with drainage behind them and footings taken through the fill into native ground, and file the engineered detail Building and Safety asks for wherever the exemption does not reach.
Interior slabs in these houses were poured on the graded pad in the 1980s and 1990s, and a floor that has moved with the fill has to be sorted before tile or wood goes down. We cut out the failed sections, tie new concrete into the sound slab, and grind the floor flat.
Permits for structural slabs, driveway approaches and retaining walls go through Building and Safety at the City of Chino Hills, and a wall that misses the city's exemption needs an engineered detail submitted with the application. We file it, meet the inspector on site and close the permit out before the crew leaves. The city sets out what it wants at chinohills.org.
Most of this town sits inside a homeowners association, a step no other place on our list adds to a concrete job. The tract approves exterior finishes, color, pattern, border, edge, before work starts, and a committee that has turned down a neighbor's border will turn down the same one on your frontage. We write the finish onto the estimate in the terms the committee uses and hand you the sample board to submit, so approval runs alongside the city permit rather than after it.
Our Riverside yard is 18.9 miles away, out on the 91 and north on the 71, close enough to start a Grand Avenue pour before the afternoon heat. The housing is not all one age, either: the master-planned tracts date from the 1980s and 1990s, while Los Serranos and the canyon lots along Carbon Canyon Road go back to the 1920s, where the work is replacing unreinforced flatwork rather than managing a graded pad. What sits under a parcel can be checked on the USDA Web Soil Survey.
Four stages, from the first call to a closed permit. The grading plan and the association's finish approval both sit inside the middle two, which is what separates a job here from one on a flat lot.
Tell us the street and what you want poured, drive, patio, wall. We answer within 1 business day and book a visit that suits you.
We measure the pour, dig a test hole and read the tract grading plan to find where cut meets fill. The figure is written down on site.
The Building and Safety file goes in, the finish spec goes to your association, and we set a date once both of those are back.
Base, steel, pour and finish. We walk the work with you, say when a car can go on it, and close the permit out before we leave the street.
Every estimate is measured and written on site, and on a graded lot that means standing on the pad before any figure exists. Call, or send the street and what you want built, and we will arrange the visit.
Reviews
Reviews from owners across the towns we cover, including the graded lots above Soquel Canyon Parkway and the older streets down around Los Serranos.
“Our 1920s place in the Wood Streets had a driveway that was more crack than concrete. They took out 480 square feet, dug the old fill out to firm ground and poured 5 inches. Marco was there for the pour and the joints were cut the same afternoon.”
“The city tagged the sidewalk panel outside our house on Magnolia. Riverside Concrete Pro pulled the encroachment permit, met the inspector and poured the 5-foot section to the cross slope the city wanted. I never had to go to the counter myself.”
“We wanted a patio behind the house in Canyon Crest that would take the afternoon sun. They poured 380 square feet in a broom finish, cut the joints on a 10-foot grid and sealed it at 28 days. Two summers on it has not moved a millimeter.”
Six things that come up on almost every estimate we write in these hills, answered with what the graded pads, the clay and the tract rules actually require of the work.
The slope first. A steep approach off a hillside street means more excavation, a deeper key where the drive meets the apron, and a finish textured enough to stay safe wet. Then whether the run crosses the cut-and-fill line, which adds thickness and steel through that band. Then the banking either side, which often needs a low wall before it needs concrete. And last the finish your tract has approved.
For most of it, yes. Building and Safety at the City of Chino Hills permits structural slabs, driveway approaches and retaining walls, and the city's own exemption is narrower than the state one: a wall stays out of plan check only if it is under 4 feet, retains less than 3 feet of soil, has ground behind it flatter than 4 to 1, carries no surcharge, and stands 5 feet clear of every line.
Because the pad was graded before the house went up. The uphill half was cut and the downhill half built up with compacted fill, and the two settle at different rates for years. Anything poured across the join takes that difference as one crack. The fix is thickening the slab through the crossing, running steel across it, and setting the control joints where you would rather the movement showed.
Two to four days of work once the base is prepared, then 24 to 72 hours before you walk on the surface and seven days before a car goes on it. Regrading a sloped pad adds a day; a wall to hold it level adds two or three more. What varies is the paperwork in front: the city permit and the tract's finish approval both have to land first, so we file them in parallel and set your start date off the slower one.
The yard is on Chicago Avenue in Riverside, 18.9 miles from Chino Hills by the 91 and the 71. We reply to every request within 1 business day and in most weeks we are out measuring within a few days of that. The distance matters more here than it sounds: a pour on a graded pad wants an early start, and a crew held up in traffic ends up finishing a surface in the afternoon heat, which is when a slab crazes.
Chino Hills is one of 20 towns inside the 25-mile radius we work, and the ones around it are all on the list, Chino directly north, Ontario and Montclair to the north-east, Norco and Eastvale to the south-east. The ground changes quickly across that boundary: a few miles north of Grand Avenue the hills flatten into the old dairy ground of the Chino valley, a different base to build on.
Chino Hills sits at the western edge of the 25-mile radius we work out of Riverside. The rest of the towns on that list are below, ordered by how far the drive is.
Open the Riverside Office in Google Maps Tell us what you are planning and where it sits on the lot. We put in writing what the slope, the fill line and your tract's finish rules add to the job before you commit to anything.