Licensed Sydney Rock Excavation

Rock Excavation Sydney

Sandstone, shale and hard rock removed where a standard dig stops. Rock saw, breaker or ripper matched to the rock and the access, for pools, basements, footings, trenches and site cuts across Sydney. Rock carted, site left to level.

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★★★★★
4.9 from happy Sydney customers
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Licensed operators
Dial Before You Dig
Fully insured work
Local Sydney crew
Rock
Digs handled
Mini to 35t
Machine range
4.9★
Average rating
Free
Site quotes
When the bucket stops

Half of Sydney sits on rock. The quote should know that.

A dig that's priced as soil and turns out to be sandstone at 400 millimetres is the most common surprise on a Sydney site. Rock changes the machine, the attachment, the time and the way the spoil is handled. It can also change the neighbours' day, because breakers are loud and vibration travels through sandstone into the house next door. The method is matched to the rock: a saw for clean edges next to a boundary or a footing, a breaker for bulk removal, a ripper where the rock is weathered enough to pull apart. The site's looked at first, so rock is in the quote rather than a variation.

Rock identified at the site look, not mid-dig
Saw, breaker or ripper matched to the rock
Clean edges next to boundaries and footings
Rock loaded out and carted, not left in a heap
At a glance

The rock excavation job, in short

Methods
Saw, breaker, ripper
Matched to the rock and the edge
Machine range
3 to 30t
Breaker on a mini for backyards, bigger for basements
Rock types
Sandstone, shale, ironstone
Hawkesbury sandstone most common
Typical jobs
Pools, basements, footings
Trenches and site cuts in rock
Edges
Sawn where it matters
Boundaries, footings and neighbours
Vibration
Managed and monitored
Neighbours told, dilapidation where needed
Spoil
Rock loaded and carted
Or crushed for reuse where the plan allows
Handover
Cut to level
Ready for the shell, slab or footing
What's included

What rock excavation covers

Rock breaking
Hydraulic breaker on a mini, midi or standard excavator for bulk sandstone and shale removal.
Rock sawing
Clean vertical cuts next to boundaries, footings and existing structures where a breaker would over-break.
Ripping
Weathered and layered rock pulled apart with a ripper tooth before it's dug.
Pool and basement rock
Deep cuts in rock shaped to plan, with edges cut clean for the shell or shoring.
Footings and piers in rock
Pads and pier holes broken out to the engineer's depth.
Rock removal and cartage
Broken rock loaded out and carted, or crushed on site where it can be reused as fill.
Where it suits

Every job that hits rock

The rock decides the method and the access decides the machine.

Pools

Pools in rock

Shells cut into sandstone with clean walls for the concrete or fibreglass.

Basements

Basements and deep cuts

Bulk rock removed to the engineer's level with sawn edges at the boundaries.

Footings

Footings and piers

Pads and pier holes broken out where the engineer wants them founded in rock.

Trenches

Trenches through rock

Service and drainage runs sawn or broken through sandstone.

Site cuts

Site cuts on sloping sandstone blocks

Benches and level pads cut into rock on the North Shore and Northern Beaches.

Walls

Retaining walls and driveways

Rock cut back to make room for walls, driveways and access.

Sandstone, clay, tight access

Rock excavation built for Sydney ground

Sydney is built on Hawkesbury sandstone, and it's rarely far down. On the North Shore, the Northern Beaches, the Eastern Suburbs and around the harbour it's often within half a metre of the surface, and sometimes it is the surface. Further west the sandstone gives way to Ashfield shale, which is softer but breaks unevenly, and pockets of ironstone that blunt everything. Sandstone bedding runs in layers, so a ripper can sometimes lift it in slabs, but massive beds need a breaker and edges near a boundary need a saw so the neighbour's side doesn't come with it. The rock is looked at before quoting, because the type and the depth decide the whole job.

Hawkesbury sandstoneAshfield shaleIronstoneBoundary cutsVibration
How it runs

First call to clean handover

Every job follows the same sequence, whether it's a single trench or a full site cut.

Services located 01

Assess & quote

Site visit, plan review and Dial Before You Dig. One clear quote covering dig, cartage and cleanup.

Access protected 02

Set out & protect

Levels marked, driveway and surfaces protected, machine sized to the site.

Spoil carted 03

Dig & cart

Dug to plan and level, spoil carted as we go so the site keeps moving.

To level 04

Trim & hand over

Site trimmed, tidy and to level, ready for the next trade.

A trench can be a day, a basement can be weeks. Dates come with the quote, not after.

What size suits your job

Right machine for your access

Excavators are sized in tonnes, and the size decides both what it can dig and whether it fits your block. We bring the one that suits the job, not whatever's parked up.

Mini1 to 6t

Backyards, pools, trenches and tight access, some fit through a standard side gate.

Midi6 to 10t

Larger residential, driveways and small site cuts where a mini runs out of reach.

Most rock work
Standard10 to 20t

Full site cuts, basements and bulk residential or commercial digs.

Large20 to 35t+

Bulk earthworks, civil and big commercial jobs moving serious volume.

Not sure what'll fit? Access usually decides it, tell us the site and we'll match the machine.
The job explained

What rock excavation actually involves

The first question on any Sydney dig is how deep the rock is, and the answer usually comes from a geotech report, a neighbour's excavation or a test hole at the site look. If rock's likely, the quote is built around it from the start: the machine, the attachment, the time and the cartage all change, and it's better to know that before the job is booked than to find out on day two.

Once the soil is off and the rock is exposed, the method depends on what it is. Weathered sandstone that's already fractured into slabs can often be ripped: a single heavy tooth is dragged through the bedding planes and the rock lifts apart, which is fast and quiet. Solid beds need a hydraulic breaker, a chisel on the end of the excavator that fractures the rock a piece at a time. It's the workhorse for pools, basements and footings, and it's loud, so neighbours are told and hours are kept to council limits.

Where the edge of the cut matters, a rock saw goes in first. A saw leaves a straight vertical face, which is what you want along a boundary, beside an existing footing, or where a pool shell or shoring wall has to sit hard against the rock. Breaking to a boundary without a saw cut over-breaks past the line and takes the neighbour's ground with it.

Vibration is managed rather than ignored. On tight sites a dilapidation report of the neighbouring house before work starts protects everyone, and monitoring is set up where the engineer asks for it.

Broken rock is loaded out as the dig goes. It's heavier and bulkier than soil, so cartage is a bigger part of the job and is spelled out in the quote. On larger sites it's sometimes crushed and reused as fill. The finished cut is trimmed to the level the engineer or pool builder needs and left clean for the next trade.

Standard excavator with a breaker working a deep sandstone rock cut
Recent work

Sites we've dug

Backyards to building sites, right across Sydney.
Penrith Site cut
Castle Hill Pool dig
Ryde Basement
Liverpool Civil
“Very easy to deal with.
Excellent communication”
Priya, Penrith
“Left the site spotless.” Dave, Castle Hill
“Would definitely recommend them!” Marcus, Ryde
“Great job thanks so much.” Lauren, Liverpool
“Very easy to deal with. Excellent communication” Priya, Penrith “Left the site spotless.” Dave, Castle Hill “Would definitely recommend them!” Marcus, Ryde “Great job thanks so much.” Lauren, Liverpool
“Very easy to deal with. Excellent communication” Priya, Penrith “Left the site spotless.” Dave, Castle Hill “Would definitely recommend them!” Marcus, Ryde “Great job thanks so much.” Lauren, Liverpool

Rock excavation questions, answered

How much does rock excavation cost in Sydney?

Rock is priced on the type, how much has to come out, the method it needs and how far it has to be carted. It’s more per cubic metre than soil because it’s slower to remove and heavier to move. Every job gets a written quote after a site look, and if rock’s likely it’s in the quote from the start rather than added later.

How do you know if there’s rock on my site?

A geotech report if you have one, what neighbouring digs found, and a test hole at the site look. On the North Shore, Northern Beaches and around the harbour we assume rock until proven otherwise.

What’s the difference between a rock saw and a breaker?

A saw makes a clean straight cut and is used along boundaries, footings and anywhere the edge matters. A breaker fractures rock for bulk removal and is faster but rougher. Most rock jobs use both.

Will it damage my neighbour’s house?

Vibration through sandstone is real, which is why boundary edges are sawn, hours are kept to council limits and a dilapidation report is recommended on tight sites. Monitoring is set up where the engineer requires it.

What happens if you hit rock partway through a dig?

If it wasn’t expected, work stops and you get a clear explanation and a revised scope before it continues. If the site look flagged rock, it’s already in the quote and the job carries on.

Can you excavate rock in a tight-access backyard?

Yes. A breaker fits on a 3 to 5-tonne mini that goes through most side gates. It’s slower than a big machine but it gets pools and footings done where nothing else fits.

What do you do with the rock?

Loaded out and carted to a recycler, or crushed and reused on site as fill where the plan allows. Some sandstone is kept for landscaping if you want it. Cartage is set out in the quote.

Other services

Excavation for every stage

Clearing

Land Clearing

Vegetation, stumps and debris cleared to a workable site.

Drainage

Trenching & Drainage

Service trenches, stormwater and drainage lines dug to line and level, backfilled and compacted.

Earthmoving

Earthworks & Earthmoving

Bulk earthmoving, cut and fill, site cuts and levelling for residential and commercial builds.

Pools

Pool Excavation

Precise pool digs shaped to plan, tight access included.

Basements

Basement Excavation

Deep digs with battering, shoring and spoil handled.

Tight access

Mini Excavation

Compact machines for narrow access and small jobs.

Demolition

Demolition & Excavation

Demolition, clearing then excavation as one job.

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Not sure what you need?

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What happens next

Tell us the job. We'll size it up.

Tell us the suburb, the access and what needs digging
We'll come out and look before quoting anything
You'll get a written quote with what's included spelled out
The machine's matched to your access, not whatever's free
Clear on spoil, cartage and cleanup before we start
No obligation, no pressure
Get a free quote
Excavator arm breaking rock on a Sydney site
Where we work

Excavation right across Sydney

From Liverpool and Macarthur out west, up through the Hills and the North Shore, across the Inner West and the Eastern Suburbs, over to the Northern Beaches and down to the Sutherland Shire. If you're anywhere in Sydney, we can get to you.

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Parramatta Penrith Blacktown Liverpool Castle Hill Ryde Chatswood Cronulla Campbelltown Bankstown Manly Baulkham Hills
Parramatta Penrith Blacktown Liverpool Castle Hill Ryde Chatswood Cronulla Campbelltown Bankstown Manly Baulkham Hills
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Written quote after a proper site look
Free quote after a proper site assessment
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No obligation, free site quote