Bristol Diamond Drilling Prices: Understanding the Cost of Hole Size vs. Visit Time

On domestic jobs, the size of the hole rarely sets the price; the visit does. Across 120+ jobs, from single extractor holes in Bristol kitchens to 300mm cores on commercial sites, including Bristol Airport and a Skanska project for IKEA, we’ve found that setting up, wet drilling, protecting the room and clearing slurry takes almost as long for one 107mm hole as for three. This guide explains Bristol prices by hole size, how quotes are calculated and what can change the cost.

What Most Diamond Drilling Price Guides Say vs What We've Found in Bristol

National cost guides often list a flat price for each hole: around £26–£35 for a 52mm core, £86–£116 for a 300mm core, a two-person day rate of about £400 and a typical job total of £108–£229. Those are national guide figures, not LAP Diamond Drilling prices; they are useful as a broad comparison, but don’t always reflect the cost of setting up for a small domestic job. See this national core drilling cost guide for a per-hole comparison.

What we’ve found across 120+ jobs in Bristol is that the visit often matters more than the first hole’s diameter. A 107mm hole can cost nearly the same to set up as three holes of that size in one visit, while steel in reinforced concrete can make a 150mm core take two to three times longer than the same core in plain concrete or blockwork.

Diamond Drilling Prices in Bristol by Hole Size

LAP Diamond Drilling’s 2026 Bristol-area prices start with a £150 minimum visit for one or two holes up to 152mm in brick or block. Additional holes on that same visit cost £25–£150, depending on size. All prices below exclude VAT; reinforced concrete adds roughly 30–50% per hole.

The listed extra-hole prices are not a promise that every first hole will be charged at that rate: the minimum visit and the material being drilled matter. For a precise price, send the hole sizes, material and access details before work is booked.

How Diamond Drilling Is Priced

Most jobs are priced in one of three ways: a minimum visit charge, a price for each additional hole, or a half-day or full-day rate.

Minimum Charge

The £150 minimum visit covers one or two holes up to 152mm in brick or block. It reflects the time to bring and set up the core drill, manage water and slurry, protect the work area and clear up—not just the minutes spent drilling. It’s most relevant to a single-hole domestic job; details of LAP’s diamond drilling service explain the wet, precise method used for concrete, brick and stone.

Per-Hole Pricing

Per-hole pricing makes sense when you have several holes in one visit and the scope is clear. The extra-hole rates are £25–£35 up to 52mm, £35–£50 for 107–127mm, £50–£80 for 150–200mm and £90–£150 for 250–300mm. Grouping holes lets one set-up serve the whole job; booking separate visits can mean paying the minimum charge more than once.

Day Rate

A day rate can be better value for a commercial or M&E job with multiple large cores, repeated drilling or work that needs a rig and operator on site for much of the day. LAP’s half-day rate is £250–£300 and its full-day rate for one operative and a rig is £450–£550, excluding VAT. For work that also involves cutting openings or floor sections, see LAP’s concrete saw cutting service.

Why Your Quote May Differ From the Price List

The biggest changes usually come from reinforcement, where the hole is, the thickness and make-up of the wall, and what the site provides for access and set-up. The examples below show what each factor changes and what you can do to limit extra time.

Material and Reinforcement

Brick and block are usually more straightforward to core than concrete; reinforced concrete can take longer because the diamond core bit slows when it meets steel and wears faster. A 150mm core through heavily reinforced concrete can take two to three times longer than the same hole through plain concrete or blockwork, adding roughly 30–50% per hole. If the opening is through a structural element, ask whether an engineer’s sign-off is needed before drilling. A cover meter or rebar scan can help identify steel before the drill starts; discuss this when arranging diamond drilling in Bristol.

Position and Access

Floor and ceiling cores often need a rig-mounted drill anchored securely, plus controlled water collection, so they take longer to set up than an accessible wall hole drilled with a handheld drill. For example, a floor core above a finished room needs protection beneath the work area as well as safe access and slurry control. Clear access around the drill position and tell the driller if the hole is overhead or in a confined space.

Wall Thickness and Construction

Bristol’s Victorian solid brick and Pennant stone walls can be 330–450mm or thicker, so the driller may need extension barrels and more time. Rubble-filled stone can also bind the bit, unlike consistent blockwork. Share a measurement across the wall and photos of both sides so the right core bit and extensions can be planned.

Water, Power and Site Protection

Wet coring uses water to cool the diamond core bit and control dust, but the slurry needs to be contained and removed. No water or power on site, a finished kitchen that needs extra protection, or a confined work area can all add set-up time and equipment. HSE recommends controlling construction dust at source; read its construction dust guidance. Tell the driller in advance what services and protection are available.

Number and Size of Holes

Several holes in one visit usually cost less per hole than the same work split between separate visits because the drill and water-control set-up only has to be made once. For example, three 107–127mm holes can be completed under one minimum visit plus the applicable extra-hole charges, rather than arranging three separate minimum visits. Mark all required openings before booking so they can be priced and grouped together.

The Mistake That Makes Drilling Quotes Jump

The common mistake is letting each trade book its own driller. A kitchen fitter may arrange an extractor hole, a plumber a soil pipe and a heating engineer a boiler flue; if those are separate appointments, the same house can pay three minimum visit charges for work that could fit into one.

Ask the trades to agree the hole positions and sizes before any appointment is booked. One visit for all the openings is usually the cheaper option, provided the holes are accessible and the work can be safely completed together.

What's Included in a Diamond Drilling Quote

A useful quote should identify the planned holes, the material and any conditions that could change the work. Ask whether it covers the operator, equipment, water and slurry handling, core removal and clean-up, and whether any scanning or making good is separate.

What Happens on the Day

The driller checks the agreed positions, material and access, then sets up the core drill and protects the surrounding area. Wet drilling follows, with water and slurry managed as the hole is cut; the core is removed and the area is tidied afterwards. The time on site depends on the number and size of holes, wall thickness, reinforcement and set-up, so a single-hole visit still includes work beyond the drilling itself.

What's Usually Included

A quoted drilling visit typically covers the operator’s labour, core drill and diamond core bit, routine water management, removal of the core and basic clean-up. Confirm the exact scope in your quote, especially if the job involves several openings, a thick wall or a finished surface that needs extra protection. For larger cutting work, check whether concrete saw cutting is also needed.

What Can Cost Extra

Rebar scanning, engineer sign-off, making good after drilling, out-of-hours access and specialist waste removal may be separate from the drilling price. Reinforced concrete can add roughly 30–50% per hole, and unusual site conditions may also require additional equipment or time. Agree these items before work starts, particularly if the hole passes through a structural element.

Common Diamond Drilling Jobs and Typical Costs

For the first one or two holes up to 152mm in brick or block, the minimum visit is £150 excluding VAT. The figures for extra holes below are the listed rates for holes added to that visit; reinforced concrete adds roughly 30–50% per hole, and larger or unusually thick openings need the actual scope checked.

How to Get an Accurate Diamond Drilling Quote

Before booking, walk the job with your trades and mark every hole: size, centre point and what will pass through it. Send photos of both sides of the wall or floor, with a tape measure across the thickness, and say whether it is a ceiling or reinforced concrete. Tell the driller about access, available water and power, and whether the area is finished or occupied.

LAP Diamond Drilling works across Bristol and the South West. Founder Liam Palmer is a DSA member; the team has CSCS, IPAF and PASMA cards and confined-space training. LAP uses wet drilling for dust control, has a 5.0 rating from 19 Google reviews and provides free quotes from photos. For a specialist’s minimum charge, you get an insured operator and a clean, accurately placed hole first time, without avoidable damage to the wall. Send the job details through the LAP quote and contact page; you can also see the team’s projects.

Diamond Drilling Cost FAQs

How much does one diamond-drilled hole cost in Bristol?

For one or two holes up to 152mm in brick or block, LAP’s minimum visit is £150 excluding VAT. The extra-hole rates range from £25–£35 for up to 52mm to £90–£150 for a 250–300mm core, so a single-hole job is not necessarily priced at the national guide’s per-hole figure.

Are the Bristol prices inclusive of VAT?

No. LAP’s listed prices exclude VAT. Ask for the total including VAT when confirming your quote.

Does drilling through reinforced concrete cost more?

Usually, yes. Steel slows the core drill and wears the diamond bit; LAP’s guide is to add roughly 30–50% per hole, with heavily reinforced concrete potentially taking two to three times longer than plain concrete or blockwork.

Does drilling a ceiling or floor cost more than a wall?

It can, because floor and ceiling cores often need a rig fixed in place and careful control of water and slurry. Tell the driller the hole position and what is below or above it so the set-up can be assessed.

Do I need a structural engineer before drilling?

You may need an engineer’s advice or sign-off if the hole passes through a structural element, such as a beam or load-bearing part of a building. Confirm the proposed position with the responsible designer or engineer before drilling; a cover meter or rebar scan can help locate steel but does not replace structural approval.

How long does diamond drilling take?

There is no single time that suits every hole: material, reinforcement, core size, wall thickness and access all affect the drilling. Set-up, protecting the room, wet drilling and clearing slurry also take time, which is why one 107mm hole can require nearly as much visit time as three.

Is hiring a drill cheaper than using a specialist?

Hiring a drill may cost less upfront, but it does not include an experienced operator, the right diamond core bit, water and slurry control, or protection against damaging the wall. A specialist’s minimum charge is higher than hiring a drill, but it buys a clean, exact hole first time from an insured operator.

Can several holes be done in one visit?

Yes, if their positions and access allow the work to be grouped safely. The £150 minimum visit covers one or two holes up to 152mm in brick or block, with additional holes charged by size; combining the work can avoid paying multiple minimum visit charges.

Across 120+ jobs in Bristol, from domestic extractor holes to 300mm commercial cores, we’ve found that the visit often sets the price more than the first hole’s size. Send photos and your hole details to LAP Diamond Drilling for a free quote.