Concrete patio construction in Sierra Madre CA - a patio slab that stays flat and sound
Cracked, sinking or puddling patio? We dig out, pack a solid base and pour a new slab that drains away from your house.
What does it take to build a concrete patio that lasts?
Concrete patio construction in Sierra Madre means digging out the old slab or soil, packing a firm base, setting forms and reinforcement, then pouring, finishing and curing a flat slab that sheds water away from your house. At Cornerstone Sierra Madre Concrete, I walk you through each of those steps before we start, so you know what you're paying for and why.
Most calls start with a patio that's cracked, sunk at one corner or holding a puddle after every rain, or with a patch of dirt out back you'd like to sit on. The price comes down to the size, whether there's an old slab to break up and haul away, how much digging and base work the ground needs, the reinforcement and the finish, since a plain broom finish, a lightly swept texture that gives your feet some grip, costs less than a pattern or color. The schedule turns on whether the city needs a permit, how easily we can get into your back yard and the curing wait before you can set furniture on it, and I'll give you your own numbers once I've seen the spot.
What our concrete patio construction includes
I start by checking where the water runs, because a patio that tips toward your house sends every rain back against the foundation. Our crew digs out the old slab or the soil down to the subgrade, the ground the patio will actually sit on, and packs a gravel base in layers, since dirt that's only raked level settles and takes the slab with it. I learned on the farm, pouring pads around the water troughs, that a slab is only as good as what's under it. We set the forms with a slight fall away from the house and lay in the reinforcement, which I list on your estimate as its own line, along with whether wire mesh or rebar, the steel bars that hold a slab together, suits how you'll use the patio. We pour early in the day, finish the surface and cut control joints, shallow grooves that give the concrete a planned place to crack, before it can pick its own spot. Then we take our time curing it, keeping the slab damp and covered while it hardens, because a slab that dries out too fast is the one that cracks and flakes. If the budget gets tight, I'd rather you save on the finish than on the base, since you can dress up a sound slab later but a bad base means tearing it all out.
A patio rarely stands alone. Plenty of homeowners want a pattern or color pressed into the surface, and our stamped concrete services go on the same well-built base. If you need a path from the driveway or the side gate to the new patio, we can handle the concrete sidewalk building while the crew and forms are already there, so the two slabs meet at the same height.
Why Sierra Madre homeowners call Cornerstone Sierra Madre Concrete for patios
I write every estimate myself
I come out myself to look at the yard and write the estimate, and once the job starts, our crew does the work with me on site running it. The person who told you about the packed base is the one standing there when it goes in.
Fully licensed and insured crew
We're fully licensed and insured, so the people working in your back yard are covered while they're on your property. That's also how we can stand behind one plain promise, satisfaction guaranteed on every job.
City permits handled before digging
Before work starts, we look into what your patio needs from the city or county, and when a permit applies, we handle the application as the licensed contractor and walk you through each step. Sierra Madre issues building permits only to a state-licensed contractor or the property owner, so having us apply keeps the paperwork off your kitchen table.
Explaining the job as we go
I've run this business since 2020, after years on concrete crews around the San Gabriel Valley, and what we're known for is explaining the work as it happens. You'll come away knowing your patio well enough to look after it and to ask good questions of any contractor, us included.
On a patio, what counts most is the part you'll never see again once it's poured, so ask me about the base when I come out. Call (626) 828-0332 or send us a few details about your patio.
Get a free on-site estimate for your new patio
We get back to you within one business day to set a time, and I come out myself to measure, check the drainage and write up a free estimate with no obligation. It helps to have the patio's rough size, what's there now and any big trees nearby in mind when we talk.
Concrete patio finishes and layouts
Questions before you book a concrete patio
How much does a concrete patio cost in Sierra Madre?
A patio's cost follows its size and what the bid actually includes, so the useful way to judge a price is line by line. Before you compare per-square-foot prices, check that each bid covers removing the old patio, excavation, base preparation, reinforcement, the finish, equipment access, drainage and any approvals the city requires. Our estimate spells each of those out, so you can line it up against anyone else's.
Does a concrete patio need rebar or wire mesh?
For a typical home patio, wire mesh is usually a good choice that costs less than steel rebar, which earns its keep where a slab carries heavy loads, like a driveway that sees big trucks. If anything heavy will ever roll onto your patio, tell me, because that's when I'd point you toward rebar.
What causes a new concrete patio to crack?
New patios usually crack when the fresh concrete loses water too fast, when the base underneath settles, or when there's no control joint to give the crack a place to go. On a hot day the surface can dry faster than water rises up through the slab, which starts fine shrinkage cracks, and poor curing also leads to scaling and flaking on top. Reinforcement keeps any crack narrower and less severe, which saves on repairs later, but it doesn't stop concrete from cracking altogether.
Who can legally build a concrete patio in California?
A licensed concrete contractor can, and the state licensing board describes that trade as forming, pouring, placing and finishing flat concrete work like a patio. A licensed landscaping contractor can also take it on when the patio is part of the landscaping around your house. Someone without a license can only do minor jobs under $1,000 in total, and only if the work needs no permit and they have nobody working for them.
Do I need a permit to build a patio in Sierra Madre?
Sierra Madre requires a Grading, Drainage and LID Permit when a project adds more than 500 square feet of impervious surface, the hard kind like concrete that rain can't soak into, and LID stands for low impact development. The city also allows construction only from 7 a.m. to 7 p.m. Monday through Saturday and 10 a.m. to 6 p.m. on Sundays and holidays, so we plan our pours inside those hours. You can check the details with the city's building and safety department, and we'll sort out with you what your patio needs before anyone digs.
How do I build a patio near an oak tree in Sierra Madre?
Start by finding out whether the tree is protected, because in Sierra Madre any work that needs significant pruning or removal of a protected tree requires a Tree Removal/Pruning permit first. Protected trees include coast live oak, Engelmann oak, Southern California black walnut and western sycamore, plus every parkway and park tree. Point out any big trees near the spot when I come out, and I'll lay out the patio and the dig with them in mind.
Other concrete work that goes with a patio
- Stamped concrete services
If you want your patio to look like stone, brick or tile without setting each piece by hand, a stamped surface gives you the pattern in a single pour.
- Concrete sidewalk building
A walkway from the driveway, the front door or the side gate gets people to the new patio without crossing wet lawn or tracking mud through the house.