Core Drilling in Modesto
Round holes drilled through concrete and masonry for pipes, conduit, and drains — the size you marked, where you marked it.
How core drilling works
People call this work a few different things — core drilling, concrete drilling, concrete coring. It's the same job either way: a hollow diamond bit turns, cuts a round hole, and the plug of concrete in the middle comes out with the bit.
Core drilling is how pipes, electrical conduit, vents, and drains get through a slab or a wall. Holes run from small conduit holes to large pipe openings, through floors, walls, and ceilings. It is the main work of any concrete drilling company, and of shops that go by concrete coring company instead.
Drilling is wet work. The bit cuts around and through rebar instead of breaking the concrete, so the hole lands where it was marked and the concrete around it stays solid. Holes can be drilled at an angle, and a row of overlapping holes — stitch drilling — can open a shape no saw can reach.
What core drilling is used for
- Plumbing and drain penetrations through floors and walls
- Electrical conduit and cable openings
- HVAC vents and duct holes
- Floor drain holes
- Anchor and handrail holes
- Test cores, to check a slab's thickness and makeup
Core Drilling prices
How the prices on this page work: the ranges below are published price ranges for this kind of work. A range is not a quote. Your written estimate is the exact price for your job.
| Job | Published range |
|---|---|
| Core drilling — per hole, by diameter and depth | $75–$500+ per hole |
| Core drilling — typical small holes | $80–$350 per hole |
| Minimum service charge on most jobs | $150–$400 |
The written estimate is the price for your job.
Need holes drilled?
Send the hole sizes, how many, and how deep the concrete is. That is enough to price most drilling.
Questions
Is core drilling the same as concrete coring?
Yes. Coring is the industry's word for the same work. The bit is a core bit, the plug it removes is the core, and a concrete coring company does the same drilling as a concrete drilling company.
Can a core drill go through rebar?
Yes. A diamond core bit cuts through reinforcing steel as it goes. If the hole has to miss the steel instead, scanning first will show where the bars run.
How much does core drilling cost?
Per hole: $75–$500 or more, depending on the diameter and how deep the hole goes. A typical small hole lands between $80 and $350. Most jobs carry a minimum service charge of $150–$400.
Do the holes go all the way through?
Usually, yes — through the slab or the wall, so the pipe or conduit can pass. Blind holes at a set depth are also drilled, for anchors and dowels.
Get a price on the job
Written estimates are free. Measurements and a photo price most cutting work.