Hiring an excavator: what an hourly dig quote really covers
Why spoil removal is half the bill, the free check to do before any dig, and how machine size trades hours against rate.
Digging looks like the simplest part of any project — a machine, an operator, some dirt moved. But excavation quotes surprise people twice: once on what happens to all that dirt, and once on what the machine hits underground.
Get clear on the spoil and the site conditions before the machine arrives, and the hourly rate becomes predictable. Leave them vague and a half-day job stretches into two.
What the job involves
Excavation is usually charged per hour or per day for the machine and operator, often with a half-day minimum plus a float fee to truck the machine to site. Mini excavators suit tight backyards and narrow side access; five-tonne-plus machines move earth far faster on open sites. Choosing the right size is a trade-off — a mini costs less per hour but takes longer, a bigger machine costs more per hour but finishes sooner.
What you do with the spoil is the other half of the bill. Spreading it on site is cheap; trucking it away is charged per load and adds up quickly, especially with heavy clay or rock. Ground conditions are the wildcard — rock, tree roots and buried surprises like old slabs, tanks or footings slow the dig and may need attachments like a rock breaker.
Access shapes everything: narrow side access forces a smaller machine and more hours for the same volume, so a job that would take a morning on an open block can take a day squeezed down the side of a house.
How the cost works
Half a day trenching for services with a mini sits at the bottom of the range, a day or two cutting and levelling a pad with some spoil trucked away lands in the middle, and a pool dig with tight access and full spoil removal reaches the top. The estimate on this page adjusts for machine hours, machine size and spoil handling, so treat any figure as a guide.
The two big levers are the machine size against the hours it saves, and what happens to the spoil. Trucking soil away can exceed the digging cost on a big cut, so it's the line to pin down. Expect a float (delivery) fee and a half-day minimum on most jobs, and ask how many truckloads the quote allows for, because 'spoil removal' with no number attached is where a bill grows.
Choosing the right operator
Excavation isn't a licensed trade in the way plumbing is, but operators work to competency tickets and should carry insurance — ask, because a machine hitting a service or undermining a footing is expensive. Before any dig, arrange a free Dial Before You Dig (BYDA) check to map underground services; hitting a gas or power line is dangerous and the repair bill is yours.
A good operator walks the site first, asks where services run and what the ground is like, and gives you an honest range rather than a suspiciously flat number. Ask whether the quote includes spoil removal and how many loads are allowed for, and bundle jobs — trenches, stump removal, levelling — into one machine visit to save paying the float fee twice.
Mistakes to avoid
Excavation regrets come from skipping the underground check, or leaving the spoil and access undefined.
- Digging without a free Dial Before You Dig (BYDA) check first
- Accepting 'spoil removal' with no number of truckloads attached
- Forgetting the float fee and half-day minimum when budgeting a small dig
- Booking a big machine for a site whose access only fits a mini
- Not warning the operator about known rock, roots or buried structures
- Paying the float twice by not bundling trenching, levelling and stump work into one visit
Indicative range only, not a quote — see the full guide for worked scenarios and what moves the price.
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