Excavation
Excavation is the digging and earthmoving work needed before most construction projects can start, from stripping topsoil for a driveway to digging a pool shell or a trench for footings. The right equipment and approach depend on soil type, access and how much material needs to be removed or relocated on site. Getting excavation right sets the levels and base for everything built on top of it.
Pricing guide: How much does excavation cost?
Typically $60 to $150 per cubic metre of material moved, or a day rate of around $700 to $1,200 for machine and operator, depending on access and soil conditions.
Why homeowners choose it
- Prepares accurate, compacted levels for slabs, driveways and paving
- Clears and grades sites ahead of retaining walls, pools or extensions
- Removes spoil, tree roots or unsuitable fill material from a site
- Machinery scaled to the job, from bobcats to larger excavators
- Identifies underground services and site issues before building starts
How it works
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1
Site assessment
Access, soil type, services and the required depth or levels are checked before work starts.
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2
Service location
Underground services such as power, water, gas and telecommunications are located and marked to avoid damage.
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3
Excavation
Material is dug and removed using machinery suited to the site, from compact bobcats to excavators.
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4
Spoil removal
Excavated material is either removed from site or relocated for reuse, depending on volume and quality.
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5
Grading and compaction
The excavated area is graded to the required levels and compacted ready for the next trade.
Hiring guide
Questions worth asking before you commit to a contractor.
Ask to see it, not just take their word for it. Insurance protects your property if something goes wrong on site.
Site preparation, disposal of old material, and any council permits can be included or charged separately — get it in writing before you compare quotes.
Some contractors do the work themselves; others subcontract parts of it. Neither is wrong, but you should know who is doing your job.
Old concrete, tree roots or drainage issues are common surprises. Ask how a change of scope gets costed before it happens, not after.
Materials usually carry a manufacturer's warranty. Ask specifically about the contractor's own workmanship warranty too.
Frequently asked questions
How much does excavation cost?
Typically $60 to $150 per cubic metre of material moved, or a day rate of around $700 to $1,200 for machine and operator, depending on access and soil conditions.
Do I need to check for underground services before excavating?
Yes. A Dial Before You Dig check is standard practice to locate underground power, water, gas and telecommunications before any digging starts.
What affects excavation cost the most?
Access for machinery, soil type (rock or clay costs more than sandy soil) and how the spoil is removed from site are the biggest cost drivers.
Can excavation spoil be reused on site?
Good quality fill can often be reused for backfilling or levelling elsewhere on site, reducing the amount that needs to be trucked away.
Excavation in popular suburbs
Local pricing, FAQs and a map for these areas.
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