Concrete cutting in Sierra Madre CA - clean cuts, checked for hidden steel first
Need a slab opened up for plumbing or a new layout? We check for hidden steel first, then cut clean and wet.
How do you cut an opening in an existing concrete slab?
Concrete cutting in Sierra Madre is sawing, coring or breaking through a slab or wall that's already there. Coring means drilling a clean round hole. It lets a plumber run a line, lets an anchor go in or changes a layout without tearing out concrete that's still good.
Most calls start with something that has to go through existing concrete, like a drain line under a garage floor, a doorway in a wall or a sunken piece of patio that needs to come out. The price moves with how long and how deep the cut runs, whether it's a wall or a slab, how much steel is inside and how easily we can get a saw to the spot. The schedule usually turns on checking what's inside the concrete and on any approval the city needs before we cut. Your own figure comes from the estimate, once I've stood there and seen it.
How our concrete cutting works, start to finish
First I mark the cut with you, because a chalk line is a lot cheaper to move than a saw line. Before the blade touches anything, we check the slab for hidden steel cables, pipes and conduit. Then we pick the saw that fits. A wall saw rides on a rail bolted to the wall so a doorway comes out square, and a walk-behind floor saw tracks across a slab or driveway in a straight line, a lot like plowing a straight furrow. We cut wet, with water running on the blade, so the dust stays down, and we catch the gray slurry so it doesn't run into the gutter and down the storm drain. Then we break out the piece, haul it off and leave a clean edge for whatever comes next.
A cut is often the first step of a bigger job. When an old driveway is too far gone to patch, we saw it into pieces we can break and haul, then pour new with concrete driveway building. Cutting out a sunken corner of a back slab or making room for a planter can lead into concrete patio construction. Any new concrete that meets the old gets a dug-out, packed base and control joints, the grooves that tell a slab where to crack, placed where we choose.
Why Sierra Madre homeowners call Cornerstone Sierra Madre Concrete for cutting
I look, quote and run it
I come out myself to look at the cut and write the estimate, and I'm on site running our crew when we do the work. The person who walked the line with you is the one watching the blade.
Fully licensed and insured
We're fully licensed and insured. The city's Building and Safety office issues permits only to a California-licensed contractor or the property owner, which matters if your cut turns out to need one.
Working in Sierra Madre since 2020
I started this business in Sierra Madre in 2020, after years on concrete crews around the San Gabriel Valley and a childhood fixing whatever broke on a family farm. We work here and in Pasadena, Arcadia, Monrovia and many other cities around them, so if yours isn't on the site, call and ask.
City approvals checked before street cuts
The city owns the street, curb, gutter, sidewalk and parkway out front, and cutting any of it, such as for a new driveway approach, needs a city permit first. Even a cut that stays on your lot can need sign-off from another city department, like Public Works when the work touches city utilities, protected trees or a sewer connection, so we sort that out before the saw comes out.
On a cut, the work that counts most happens before the saw starts, in the checking you'll never see afterward. If that makes sense for your job, tell us about it or call (626) 828-0332.
Get a free on-site quote for your concrete cut
Tell us where the cut goes and roughly how long it runs, and we'll get back to you within one business day. I'll come out myself to look at the slab or wall and write the estimate, which is free and comes with no obligation. If you'd rather talk it through, call (626) 828-0332.
Saw cuts and openings in concrete
What people ask about concrete cutting
How much does concrete cutting cost in Sierra Madre?
Professional concrete cutting across the US usually runs about $3 to $10 per linear foot of cut, and that's the general market, not our price. In practice, a short, shallow cut in open ground sits near the low end, and a thick wall cut with steel inside in a tight spot sits near the high end. The free estimate gives you a number for your own cut.
How do I know if my slab has hidden steel cables in it?
You usually can't tell by looking, because some house foundations are post-tension concrete, with high-strength steel cables pulled tight inside that don't show on the surface. Sawing or coring into one without locating the cables first can damage or release them, which is why we check before the first cut. A GPR scan, a radar that reads inside the concrete, can often show likely cable patterns, rebar spacing, conduit and slab thickness. Rebar is the steel bar that holds a slab together, and heavy steel, moisture or tight access can blur the scan's results.
Do I need a permit to cut concrete in Sierra Madre?
The city issues permits for all projects altering a structure, and its list names wall coverings, partition walls and fences but not concrete cutting, so ask the city about your cut before work starts. Cuts into the sidewalk, curb or parkway out front are a separate case and need a city permit first, as covered above. Before we start, we look into what your job needs, and when a permit applies we handle the application and walk you through each step.
What is the best way to keep dust down when cutting concrete?
Water on the blade is the main fix, because running water while sawing cuts the amount of dust a lot. When you're comparing quotes, ask each contractor whether they cut wet, since the answer tells you how much dust to plan for. We cut wet.
What causes a sidewalk to lift, and can it be saw-cut flat?
Tree roots are one of the big reasons sidewalks lift in many places. The sidewalk in front of a Sierra Madre house belongs to the city, and depending on how bad the lift is, the city's own repairs may saw-cut the raised edge to remove the trip hazard or remove and replace the panel. Since any cut there needs a city permit, it's worth asking the city first.
What hours can a concrete saw run in Sierra Madre?
The city lists construction hours of Monday to Saturday, 7 a.m. to 7 p.m., and Sundays and holidays, 10 a.m. to 6 p.m. We plan saw work inside those hours, and because a concrete saw is loud even when it's cutting wet, a word to your neighbors ahead of time goes a long way.
Work that often follows a cut
- Concrete driveway building
If you're widening the drive or replacing a broken stretch, a straight saw cut gives the new pour a clean edge, and we build that section too.
- Concrete patio construction
When a patio cut for a garden bed or drain grows into a bigger change, we can pour a new patio over a packed base with planned joints.