Once a structure is down, the site still needs work: foundation and footing removal, grading, and clearing so the ground is actually ready for whatever’s built next.
Post-demolition excavation
Foundation and footing removal
Site grading and prep
Basic land clearing
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What our excavation work covers
Excavation picks up where demolition leaves off, getting the site to a ready-to-build state.
Post-demolition excavation
Once a structure is down, we excavate the site to remove remaining footings, slabs, and debris below grade.
Foundation and footing removal
Full removal of old concrete foundations and footings, not just what's visible above grade.
Grading and site prep
Grading the site so it's ready for a new build, addition, driveway, or landscaping, with drainage in mind.
Basic land clearing
Clearing brush, small trees, and debris as part of a demolition or excavation project, so you don't need a separate contractor for a small clearing job.
Why excavation depth matters here
Ottawa's frost conditions make excavation depth more than a formality.
1,800 mm minimum footing depth
Ottawa's building guide sets a minimum footing depth of 1,800 mm below finished grade, deeper than the older 1,500 mm standard some contractors still work to.
Backfill and grading after demolition
A shallow or rushed backfill after a foundation is removed is a common cause of heaving and drainage problems the following spring once the ground freezes and thaws again.
Cold-weather planning
With a January design temperature around -25C and thousands of heating degree-days each winter, frozen ground affects scheduling, equipment access, and how excavation is sequenced.
Site-specific, not a national template
Excavation depth and backfill practice here has to account for local frost conditions, not a generic number pulled from a different climate.
Land clearing
Basic land clearing is part of the job, not a separate call
If your project needs brush, small trees, or general debris cleared alongside demolition or excavation, that’s covered as part of the same job. You don’t need to line up a separate land-clearing contractor for a typical residential or small commercial lot. For larger rural clearing projects, talk to us about scope so we can tell you honestly whether it fits what we do.
We look at the site, the structure or foundation coming out, utilities, and access before pricing anything.
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Demolition and removal
The structure, foundation, or footings are removed and debris is cleared from the site.
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Excavation to depth
We excavate to the depth your project needs, accounting for Ottawa's frost conditions and what's being built next.
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Grading and backfill
The site is graded and backfilled properly so it's ready for construction, landscaping, or paving.
Excavation pricing
Excavation pricing depends on site access, soil conditions, depth required, and what's being removed, so we don't publish a flat per-square-foot number for it. Every project gets a free on-site quote before any work is scheduled, and every job's scope and any workmanship terms are set out in your written quote.
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Free on-site assessment
No cost, no obligation
Site visit and utility check
Scope discussion for demolition, excavation, or grading
Written quote with clear scope
Demolition and excavation go hand in hand on most Ottawa projects. Once a structure comes down, the site underneath still has work left: old footings and foundations to remove, ground to bring to grade, and soil that needs to be handled correctly before anything new gets built on it.
Site prep for new construction
Whether you're clearing a lot for a new build, prepping for an addition, or getting a site ready for a driveway or landscaping, excavation is the step that turns "the old building is gone" into "the site is actually ready." That includes removing what's left below grade, not just what was visible above ground, and grading the site so water drains the way it should instead of pooling against a new foundation.
Foundation and footing removal done to local conditions
Old foundations and footings don't just get scraped off the surface. They need to be excavated out and the resulting hole backfilled and compacted correctly, or you end up with settling and drainage issues down the road. Ottawa's frost depth requirements exist for a reason: the ground here moves seasonally more than a lot of contractors coming from a different climate account for. We factor that into how we excavate and backfill, not as an afterthought but as part of how the job is planned from the start.
Excavation FAQ
How deep does excavation need to go in Ottawa?
It depends on the project, but Ottawa's building guide sets a minimum footing depth of 1,800 mm below finished grade for foundations. Excavation for a foundation or footing removal and replacement needs to account for that frost depth, not a shallower national-average figure.
What affects the cost of an excavation project?
Site access, soil type, how much material has to be removed, depth required, and what's already below grade (old footings, utilities, debris) all affect cost. That's why we quote on-site rather than off a flat rate.
Do you handle grading after excavation?
Yes. Grading the site properly, with drainage and backfill in mind, is part of the excavation work, not an extra step you have to arrange separately.
Do I need a permit for excavation or foundation removal?
A building permit is generally required to demolish or relocate a structure in Ottawa, and excavation tied to that work is usually covered under the same permit process. Some properties, mainly in older established neighbourhoods, also require a separate Demolition Control approval on top of the standard permit. We can talk through what your specific property needs, but confirming with the City is the property owner's responsibility.
How do you handle working near utilities?
Before any excavation starts, we identify utility locations on the site and coordinate around them. This is a standard part of the site assessment before we schedule the work, not something left to figure out once equipment is already on-site.
Get a free on-site excavation quote
Every site is different. Tell us what you're planning and we'll assess it in person before quoting.
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