Need core cutting in Kolkata? Core Cutting India provides precision diamond drilling and wall sawing across South Kolkata, North Kolkata, Salt Lake, New Town, Howrah, and all surrounding areas. Whether it's a 3-inch AC pipe hole in your Ballygunge flat or a 12-inch sewage bore on a New Town construction site — our team arrives fully equipped, works cleanly, and charges exactly what we quote.
📍 Serving: South Kolkata · North Kolkata · Salt Lake (Bidhannagar) · New Town (Rajarhat) · Howrah · Dum Dum · Garia · Jadavpur · Park Street · Alipore · Behala
⏱ Response Time: Same-day service, on-site within 2–4 hours of booking
💰 Transparent Pricing: Calculate Your Rate Instantly →
What Is Core Cutting?
Core cutting is a precision drilling process that uses a hollow, diamond-embedded drill bit to create clean, circular openings through concrete, RCC slabs, brick walls, marble, tile, and stone — without hammering, cracking, or structural damage.
It is the safest and most widely recommended method for:
- AC pipe and drain line holes (3–4 inch diameter)
- Water supply and sewage pipe bores (6–12 inch)
- Electrical conduit, CCTV cable, and internet wire passages
- Exhaust fan and ventilation shaft openings
- Concrete core samples for structural strength testing (compressive test)
- Industrial drainage and underground utility crossings
Unlike a hammer and chisel, diamond core cutting produces a smooth, perfectly round hole with no wall cracks, no vibration damage, and minimal debris — which is why builders, AC technicians, plumbers, and housing societies across Kolkata have switched to it as their standard method.
Core Cutting Services We Offer in Kolkata
AC Core Cutting in Kolkata
Split AC installation requires a 3 to 4 inch hole through your wall for the copper pipe, drain line, and electrical cable. Our compact, dust-controlled machines handle brick walls, RCC walls, and marble or tile-finished exteriors without damaging your flooring or furniture.
- Works directly with homeowners, independent AC technicians, and Urban Company installers
- Covers all Kolkata neighbourhoods and suburbs
- Standard AC hole completed in under 30 minutes
- Rebar scanner used on all RCC walls before drilling
Core cutting for AC in Kolkata: ₹350–₹550 (brick wall) | ₹650–₹950 (RCC wall)
Check Your Exact AC Hole Rate →
Mobile Core Cutting in Kolkata
Our mobile core cutting unit in Kolkata travels to your home, office, shop, or construction site with everything needed — machine, operator, water supply setup, and cleanup equipment. You arrange nothing.
- Available across all Kolkata zones and neighbouring Howrah, Dum Dum, Barasat, and Garia
- Residential jobs typically completed within 30 minutes
- Ideal for housing societies, apartment blocks, individual flats, and commercial spaces
RCC & Civil Core Cutting for Builders and Contractors
For construction projects, we offer:
- Deep-core drilling up to 24 inches in diameter through RCC slabs, columns, and basement walls
- Wall sawing (straight cuts) on retaining walls, boundary walls, and structural slabs
- Rebar scanning before every RCC drill to avoid rebar strikes
- Operators trained and experienced on active construction sites
We work with builders, civil contractors, MEP consultants, and project managers across Kolkata on both high-rise residential and commercial projects.
Core Cutting in New Town, Salt Lake & Howrah
We provide equal coverage and pricing across:
- New Town / Rajarhat — High-rise apartments, IT campuses, and commercial complexes
- Salt Lake / Bidhannagar — Residential sectors (I–V) and office buildings
- Howrah — Industrial and residential core cutting including bridge and infrastructure adjacent work
- South Kolkata — Ballygunge, Jadavpur, Garia, Behala, Alipore
Core Cutting Price List – Kolkata (Current Rates)
| Job Type |
Wall/Surface Material |
Estimated Cost |
| AC hole (3–4 inch) |
Brick wall |
₹350 – ₹550 per hole |
| AC hole (3–4 inch) |
RCC / concrete wall |
₹650 – ₹950 per hole |
| Plumbing bore (6 inch) |
Brick or RCC |
₹900 – ₹1,500 per hole |
| Large diameter (8–12 inch) |
RCC slab |
₹1,600 – ₹3,200+ per hole |
| Wall sawing (straight cut) |
RCC or brick |
₹150 – ₹400 per running foot |
| Core cutting test (lab sample) |
Concrete slab/column |
₹900 – ₹2,500 per sample |
| Underwater / wet-surface core cutting |
Concrete / RCC |
Quote on request |
⚠️ These are indicative rates. Final price depends on wall thickness, surface finish, access difficulty, and number of holes. Use the rate calculator for a job-specific quote in under 60 seconds. Calculate Rate →
How Much Does It Cost to Cut a Concrete Core in Kolkata?
This is the most common question we receive — and the honest answer is: it depends on three things.
1. Diameter of the hole A 3–4 inch AC pipe hole costs ₹350–₹950. A 6-inch plumbing bore costs ₹900–₹1,500. A large 10–12 inch industrial bore starts from ₹1,800.
2. Wall or slab material Brick walls cost less to drill than RCC concrete walls. Marble or tile-finished exteriors may add a small surface prep charge.
3. Depth of the cut A standard 9-inch wall is covered in the base rate. Walls thicker than 12 inches, or slab drilling beyond 12 inches depth, typically attracts an additional charge.
The fastest way to get the right number for your job: use the online rate calculator. It takes under 60 seconds and gives you a real price — not a range.
Why Kolkata Customers and Contractors Choose Core Cutting India
✅ Same-day mobile service across Kolkata, Howrah, Salt Lake, and New Town
✅ Transparent pricing — check your rate online before you call
✅ Diamond drilling only — no hammering, no wall cracks
✅ Rebar scanners on every RCC job — no surprise rebar strikes
✅ Dust-controlled drilling — floors and furniture protected
✅ Experienced operators — trained for residential and construction site work
✅ Works alongside Urban Company and independent AC technicians
✅ Verified contractors across NCR — same platform, same standards
Areas Covered for Core Cutting in Kolkata
South Kolkata: Ballygunge · Jadavpur · Garia · Behala · Tollygunge · Alipore · Regent Park · Kasba · Santoshpur
North Kolkata: Shyambazar · Ultadanga · Dum Dum · Baranagar · Sinthee · Belgachia
Central Kolkata: Park Street · Esplanade · Entally · Sealdah · Phoolbagan
East Kolkata / New Town: Rajarhat · New Town Action Area I, II & III · Eco Park Road · Teghoria
Salt Lake / Bidhannagar: Sector I · Sector II · Sector III · Sector IV · Sector V · Karunamoyee
Howrah & Suburbs: Howrah Station area · Shibpur · Santragachi · Liluah · Bally
Can't find your area? Use the rate calculator — it confirms coverage for your specific location.
Frequently Asked Questions About Core Cutting in Kolkata
How much does it cost to cut a concrete core in Kolkata?
Concrete core cutting in Kolkata costs ₹650–₹950 for a standard 3–4 inch hole through an RCC wall. Larger diameters cost more — a 6-inch plumbing bore runs ₹900–₹1,500, and heavy-diameter cuts (8–12 inch) start from ₹1,600. For brick walls, the same 3–4 inch hole costs ₹350–₹550. Use the rate calculator for a job-specific estimate based on your exact diameter, depth, and wall type.
How long does core cutting take?
A standard AC pipe hole (3–4 inch) through a brick or RCC wall takes 15 to 30 minutes including machine setup and cleanup. Multiple holes on the same visit are faster — the second and third holes typically take 10–15 minutes each. Larger diameter bores (6–12 inch) or wall sawing projects take 45 minutes to 3 hours depending on the number of cuts and wall thickness. Most residential core cutting jobs in Kolkata are completed within a single visit of under one hour.
What exactly is core cutting?
Core cutting is a precision drilling technique that uses a hollow, cylindrical drill bit lined with industrial diamonds to bore through concrete, RCC slabs, brick, marble, or stone. The drill rotates at high speed with water cooling, cutting out a clean cylindrical plug of material — called the "core" — which comes out intact. The result is a smooth, perfectly round hole with no cracks and no vibration damage to the surrounding wall. It is used for AC pipe holes in homes, large plumbing bores in buildings, structural concrete testing, and industrial utility crossings.
Can core cutting be used underwater?
Yes — core cutting can be performed in underwater or permanently wet conditions. Specialised submersible core drilling rigs are used for underwater concrete cutting in applications such as:
- Jetty and pier foundations
- Stormwater drain walls and sewer infrastructure
- Water treatment plant structures
- River intake and outfall pipes
- Bridge abutments and retaining structures near water
Underwater core cutting requires specialised equipment and operator training. Standard mobile rigs used for residential AC holes are not suitable for submerged work. Contact us to discuss underwater or wet-surface core cutting requirements in Kolkata and the surrounding region.
What is the difference between core cutting and regular drilling?
Regular drilling uses a solid twist bit that grinds material into powder. Core cutting uses a hollow diamond bit that removes material as a clean intact cylinder. Core cutting is faster on thick concrete, leaves a smoother hole, creates far less debris, and does not produce vibration cracks — making it the preferred method for structural walls and slabs. Regular drills are suitable only for thin materials like wood, plasterboard, or thin brick.
Is core cutting safe for apartment walls in Kolkata?
Yes, core cutting is safe for apartment walls when performed by a trained operator. Our team uses rebar scanners on all RCC surfaces before drilling to detect rebar placement and avoid structural reinforcement. Core cutting does not produce the impact vibrations of a hammer drill, so there is no risk of cracking tiles, plaster, or the wall structure around the hole. However, you must avoid drilling through structural columns or load-bearing walls — always inform your building management or RWA before the work begins.
Is prior approval required from the housing society?
In most Kolkata housing societies and apartment complexes, prior approval from the RWA or building management is required before drilling through any structural element. For non-structural walls (standard bedroom or living room walls for AC installation), approval requirements vary by society rules. We recommend informing your housing society before booking to avoid any dispute. Our operators can provide a brief written description of the work if your society requires it.
What is a core cutting test and how much does it cost in Kolkata?
A core cutting test (also called a concrete core test or compressive strength test) involves drilling a cylindrical sample from a slab or wall and sending it to a laboratory for testing under IS 516 standards. This is used in structural audits, building age assessments, construction quality verification, and court/insurance-related property disputes. In Kolkata, the cost is typically ₹900–₹2,500 per sample depending on diameter, depth, and number of samples. This is distinct from regular service core cutting for AC or plumbing holes.
What sizes of holes can you drill in Kolkata?
We can drill holes from 1 inch (25mm) up to 24 inches (600mm) in diameter through concrete, RCC, brick, marble, and stone. Common sizes include: 1.5 inch (conduit), 3–4 inch (AC pipe), 6 inch (plumbing), 8–12 inch (sewage or HVAC), and 4 inch circular samples (core test). Wall sawing is also available for straight cuts on any surface.
Book Core Cutting in Kolkata Today
Core Cutting India has verified, rated contractors listed across the full NCR and metro network — including core cutting in Delhi, core cutting in Noida, and core cutting in Gurugram.
Same-day service. Transparent pricing. No guesswork.
📞 Call or WhatsApp: 7009679903
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Service areas: South Kolkata · North Kolkata · Central Kolkata · Salt Lake · New Town · Howrah · Dum Dum · Barasat · Garia · Jadavpur · Behala · Tollygunge · Rajarhat and all surrounding areas.
