▣ Service SpecificationON1CALL • CSA Z247 • OHS 213/91
Metro Hydrovac Toronto handles pile hole excavation, hydrovac pile holes, helical pile prep and caisson excavation throughout Toronto, Ontario and the GTA, backed by 20 years of foundation-side work. Hydrovac pile hole excavation is the process of clearing each pile or footing location with pressurized water and vacuum down to design depth, so augers, helical drivers and caisson rigs never meet a buried gas, hydro or fiber line on the way down. Holes stay plumb with no sidewall vibration, which matters next to existing footings, and spoil leaves the site in the tank.
Near Pearson Airport in Mississauga, a foundation contractor had a set of pile locations running through a corridor of buried electrical and telecom. We cleared every hole to depth in one day for $9,200, hauled the spoil away and handed the auger crew a clean path. Nobody on that site had to explain a strike to the airport authority, which was the point.
5-Star Customer SatisfactionTop-Rated Toronto Hydrovac Contractor2,000+ Projects CompletedON1Call Certified LocatorsWritten Workmanship WarrantyScheduled Digs: Business Hours
Field Audit
The 7 Things Foundation GCs Should Verify Before Hydrovac Pile Hole Work
A pile hole job goes well when these seven items are sorted before the truck arrives. We walk through each one on the free site assessment.
#01
1. Valid locates at every pile location
Not just the property. Every pile, caisson and footing location should sit inside a current ON1Call ticket area.
#02
2. Design depth and diameter per hole
Standard holes are 4-6 ft. Deeper caissons and larger diameters change the truck, the time and the disposal volume.
#03
3. Frost depth for footings
In the GTA, footings typically need to reach 1.2 m to get below frost. Confirm with your engineer before we cut.
#04
4. Distance to existing footings
Next to an existing foundation, sidewall stability matters. Hydrovac does not vibrate the soil the way an auger can.
#05
5. Access for the boom and hose
Backyards and side yards are fine with a long hose. Tell us gate widths, overhead wires and where the truck can park.
#06
6. Spoil plan
Spoil leaves in the tank. If you want it stockpiled on site instead, say so and we'll plan for it.
#07
7. Inspection timing
If an inspector needs to see open holes, we coordinate the schedule so holes are not left open overnight without protection.
Scope Catalogue
Pile Hole Excavation Services We Run in Toronto
From a single deck footing next to a gas service to a full pile set for a commercial canopy. Billed at $400-$600 CAD per hour or per set.
Helical Pile Preparation
Each helical pile location cleared to depth so the driver head never meets a service. Common on additions, decks and sunrooms beside gas and hydro.
Caisson Exposure
Opening caisson locations to confirm nothing is in the shaft path before the rig drills. Pylon signs, light standards and canopy columns.
Foundation Potholing
Test holes at foundation corners and column lines to find utilities before excavation and shoring are designed.
Retaining Wall Holes
Post and pier holes along property lines where fiber, gas or water often run in the boulevard.
Sign & Light Pole Bases
Commercial sign and light standard bases in parking lots and plazas, usually crowded with lighting cable and storm pipe.
Deck & Addition Footings
Residential and light commercial footings next to existing services, without vibration near the house.
Fence Post Holes Near Utilities
Long fence runs over marked utilities, where one wrong auger hole costs more than the whole fence.
Substation Pier Holes
Pier holes in and around utility substations with tight clearances and dense grounding grids.
Why Use Hydrovac for Pile Holes?
Helical piles, sonotube footings and caissons all have the same weak point: something has to make the first hole, and that something usually has teeth. On a GTA lot with gas, hydro and fiber running through the yard or boulevard, an auger is a gamble.
Hydrovac pile hole excavation removes the gamble. Water cuts the soil, the vacuum lifts it, and any service near the hole shows up long before it can be hit. Once the hole is clear to depth, your auger rig or helical driver goes in at full speed. On a site with buried services we expose each one with hydrovac excavation first, and on a long run of locations we often daylight the utility line end to end so the whole layout can be adjusted at once.
What makes a good pile hole
Plumb. Straight sides keep the pile or sonotube aligned.
Clean. No loose spoil at the bottom to compress later.
Stable sidewalls. No vibration, which matters next to existing footings and slab edges.
To design depth. Below frost depth in the GTA, typically 1.2 m or more for footings.
Pile Hole Methods Compared
Method
Utility strike risk
Vibration near footings
Spoil handling
Best use
Auger rig only
High on congested lots
Moderate
Piled on site
Open lots, no services
Hand digging
Low but slow
None
Piled on site
One or two shallow holes
Hydrovac
Near zero
None
In the tank
Any lot with buried services
Hydrovac then auger
Near zero
Low
Mostly in the tank
Deep or large diameter piles
Field note from our crew
Nine times out of ten, this is where the previous contractor cut a corner: they augered the first hole “just to check.” On a Bloor West Village addition that first hole would have landed 200 mm from the gas service. We found it at hole number three, everytime you look at the logs.
Where We Dig Pile Holes Across the GTA
Toronto infill and additions: Bloor West Village, Leaside, the Beaches and East York, where gas services run close to the house.
Commercial canopies and pylon signs: Airport Corporate Centre, Dixie Rd and Steeles Ave plazas, full of lighting cable and storm pipe.
Retaining walls along property lines: Unionville and Markham, where fiber often sits in the boulevard.
Pearson-area foundations: where a strike on airport infrastructure brings a lot more than a repair bill.
What Affects Pile Hole Cost?
Number of holes and depth. A 4-6 ft set is $1,200-$3,500 CAD. Deeper caissons bill hourly.
Soil and frost. Clay and frozen ground take longer. Heated water handles winter work.
Access. Long hose runs and tight side yards add setup time, not a separate fee.
Disposal. Spoil leaves in the tank and goes to a licensed facility on its own line.
Every quote shows rate, mobilization, disposal and locates separately. Foundation GCs on commercial projects can book a free on-site assessment.
Why Crews Call Us
Why GTA Crews Choose Metro Hydrovac Toronto for Pile Holes
01
20 Years of Hydrovac Excavation Experience
Two decades operating hydrovac trucks across the GTA, from the first Vactor 2100i we bought used in 2004 to our current fleet of three units.
02
Plumb Holes, No Sidewall Vibration
Water and vacuum cut a clean, straight hole without shaking existing footings or slab edges.
03
Utility Clearance Before Any Auger
Every service near the hole is exposed and logged, so your pile crew works without surprises.
04
OHS Reg 213/91 + Ontario One Call Compliant
ON1Call verified, pre-dig photos and OHS 213/91 protocol on every hole. 100% first-visit coordination approval.
05
Spoil Leaves in the Tank
No spoil piles on finished landscaping or driveways. Licensed disposal with records.
06
Transparent CAD Pricing Published
$400-$600 CAD per hour, or $1,200-$3,500 for a 4-6 ft pile hole set. Itemised quotes.
5-Step Dig Protocol
How Our Pile Hole Excavation Process Works, 5 Steps
STEP 01
Ontario One Call Locate Verification
We match every pile location to your ON1Call ticket, photograph the marks and flag each hole with its number from your drawing.
STEP 02
Truck Positioning & Traffic Control
Truck staged within boom or hose reach of every hole. Ground protection mats go down on lawns and driveways before the hose moves.
STEP 03
Pressurized Excavation & Depth Checks
Each hole cut with 3,500 PSI water and checked against design depth and plumb. Some contractors over-charge for mobilization thinking clients wont check other quotes. Ours is on the rate card.
STEP 04
Inspection-Ready Holes & Sign-Off
Depths, diameters and any utilities found are logged per hole. Owner Alex Novak reviews pile logs on foundation jobs, because an auger crew is going in right behind us.
STEP 05
Compliant Disposal & Clean Handover
Holes covered or handed straight to the pile crew, spoil hauled to a licensed facility, site left tidy. It still blows our mind when we finish one.
Published Rate Matrix (CAD)
Pile Hole Excavation Cost in Toronto (CAD)
Hydrovac pile hole excavation in Toronto costs $1,200-$3,500 CAD for a 4-6 ft pile hole set, or $400-$600 CAD per hour for larger foundation jobs and caissons.
Pile Hole Excavation Cost in Toronto (CAD)
Equipment, Crew or Scope
Published Rate (CAD)
Minimum / Base
Use Case
Pile hole set (4-6 ft deep)
$1,200-$3,500
Per set
Additions, decks, retaining walls, sign bases. Zero Vibration
Simple holes billed on the standard day rate where specs allow.
Construction site utility exposure (large build)
$20,000-$100,000
Per project
Pile and footing clearance across a full build.
Every quote itemises hourly rate, mobilization, disposal and locate fees separately.
Objections, Answered With Numbers
4 Questions Foundation Crews Ask Before Booking Hydrovac Pile Holes
“Our auger is faster.”
In our opinion, an auger is faster right up until it finds a gas service. We clear the hole, then your auger or driver goes in at full speed. Most sets take a single day.
“Hydrovac holes cost more than augered ones.”
A 4-6 ft set runs $1,200-$3,500 CAD. A struck gas line next to a house costs far more and stops the job. On congested lots the hydrovac set is the cheaper path.
“Water will soften the soil around our footings.”
We control water volume at each hole and vacuum it out immediately. Holes stay plumb and sidewalls stay intact, without the vibration an auger puts into an existing foundation.
“We can't get a truck into the backyard.”
You don't need to. The truck parks on the street or driveway and the hose reaches up to 200 ft, through gates and around corners.
Field Photos
Recent Pile Holes Work Across the GTA
Crews of two or more on every job. Click any photo to enlarge.
Client Field Reports
What Clients Say About Our Pile Holes Work
“12 helical pile holes for a rear addition, 5 ft deep right beside the gas service. $2,950 CAD and the pile crew never hit a thing.”
Carlos E. · Bloor West Village
“18 retaining wall holes along a property line with fiber in the boulevard. One day, $3,400 CAD, holes were plumb and clean for the inspector.”
Helen G. · Unionville
“Caisson exposure for a pylon sign foundation, 6 ft holes, spoil hauled away in the tank. $3,200 CAD.”
Imran J. · Airport Corporate Centre
5-Star Customer Satisfaction · Top-Rated Toronto Hydrovac Contractor
Field Questions
Pile Hole Excavation FAQ
How much does hydrovac pile hole excavation cost?
Pile holes 4-6 ft deep run $1,200-$3,500 CAD per set, or $400-$600 per hour for larger foundation jobs.
What is the hourly cost for a pile hole crew?
$400-$600 CAD per hour with a 4-hour minimum. Simple holes on standard specs can bill at the $280-$350 standard truck rate.
Is hydrovac expensive for pile holes?
Less than you'd think. A full set often costs about the same as a day of hand digging, and it removes the strike risk entirely.
What does a hydrovac truck cost, and does that affect pile hole pricing?
Trucks like the Vac-Con V390 cost well over half a million dollars plus inspections and insurance. The hourly rate covers the truck, two operators and fuel, so you never carry that capital cost.
What training do your pile hole operators have?
Red Seal certified operators, Ontario One Call certified locators, and crews trained in OHS Reg 213/91 excavation safety and CSA Z247 ground disturbance.
How deep can you dig a pile hole?
Standard sets are 4-6 ft. Caissons and deeper footings can go much further in stable soil; we scope depth per hole on the quote.
Will hydrovac damage my existing foundation?
No. There is no vibration, and water is vacuumed out as we go, so sidewalls and adjacent footings stay stable.
Have you done pile holes near Pearson Airport?
Yes. We completed a Pearson Airport site pile hole job in Mississauga for $9,200 in a single day.
Itemised Quote
Request a Pile Holes Quote
Tell us the site, the scope and the timing. We reply with hourly rate, mobilization, disposal and locate fees on separate lines, in CAD.
✓Free on-site assessment for commercial projects across the GTA
✓Owned trucks, in-house Red Seal operators, no subcontracting
