Site Preparation & Earthmoving

Site Preparation, Grading & Earthmoving Across Calgary and Rocky View County

Every foundation, slab, driveway and yard is only as good as the ground prepared for it. We clear the land, strip and stockpile the topsoil, move earth to design elevations with laser or GNSS machine control, compact the subgrade in thin lifts and build gravel access roads, so the next trade starts on ground that will hold its shape through a Calgary winter.

A small crawler dozer with a GPS mast on its blade spreads and levels brown soil across a large cleared lot under a prairie sky.

What This Work Covers

Site preparation is the stretch of work between raw land and the first form or footing. It usually runs in a fixed order. Land clearing takes out brush, trees, stumps, root masses and boulders so nothing organic is left to rot under a structure. Mass earthworks and site grading strip the topsoil, balance cuts against fills and shape the site to the elevations on the grading plan. Subgrade compaction and proof rolling turn that shaped soil into a firm platform that will not settle. The driveway and access road rough-in gives every truck and machine that follows a way in that stays usable when the weather turns.

The four services overlap on almost every project, but each answers a different question. Clearing asks what has to come out of the ground. Grading asks where the ground has to end up, and how water will leave it; in Calgary, that includes the minimum 4% fall within 1.2 m of a foundation called for in the City’s lot drainage guide. Compaction asks whether the ground will hold, and it is measured against a density target from a Standard Proctor test rather than judged by eye. The driveway rough-in asks how heavy traffic will reach the site, and it layers geotextile, sub-base and crushed gravel over a compacted subgrade.

What ties them together is sequencing and measurement. Topsoil stripped during clearing or grading is stockpiled for landscaping, not buried. Stump holes left by grubbing are filled and compacted as part of the grading. The subgrade that grading shapes is the same subgrade that gets proof rolled, and the access road built early becomes the haul route for everything after it. Where an engineer, a grading plan or a municipal specification sets the numbers, we build to those numbers and check them as we go, and independent testers and certifying professionals confirm the results.

Site Prep & Earthmoving Services

An excavator loads an articulated hauler at a cut in brown soil on a large graded development site.

Mass Earthworks & Site Grading

Cut and fill, topsoil stripping and laser or GNSS grading to design elevations.

How it works

An excavator with a grab thumb lifts a bundle of poplar and willow brush onto a pile on a partly cleared acreage in rolling foothills country.

Land Clearing & Vegetation Removal

Brush, trees, stumps, roots and boulders removed; mulched or hauled away.

How it works

A padfoot roller with a studded steel drum compacts a layer of brown clay subgrade across a wide prepared area.

Subgrade Compaction & Proof Rolling

Lift-by-lift compaction, loaded-truck proof rolling and soft-spot repair.

How it works

A long strip of white geotextile fabric is rolled out along a stripped driveway alignment on an acreage, with a pile of crushed gravel waiting at the end.

Driveway & Access Road Rough-In

Acreage driveways and access roads built on geotextile and crushed gravel.

How it works

Choosing Between Them

Start with land clearing when the site is treed or overgrown: If brush, trees, stumps or boulders cover any area that will be built on, driven on or graded, clearing comes first. Mulching suits ground staying green; building footprints need stumps and roots fully grubbed out.
Choose mass earthworks and grading when elevations must change: If the site has to be levelled, a walkout cut into a slope, or water redirected away from buildings, you need grading to a plan. It covers topsoil stripping, cut-and-fill balancing and rough and fine grade.
Add compaction and proof rolling when something heavy goes on top: Slabs, shop floors, parking areas, yards and roads need subgrade compacted in lifts at the right moisture and proof rolled for soft spots. On structural work, an independent tester confirms the density.
Book the driveway rough-in early on acreage builds: If trucks will be crossing open land to reach a building site, build the access road before construction traffic arrives. Stripping, fabric, sub-base and crushed gravel keep the site working in wet weather.

Why It Matters Around Calgary

Calgary’s climate sets a hard standard for prepared ground. The normal frost depth has been reported as about 2 m, and in the extreme winter of 2019 the City recorded frost at 2.4 m (8 ft). Ground that holds water freezes, heaves and softens again each spring. For its own road and utility work, the City caps soil lifts at 200 mm, calls for 97% of maximum density in subgrade fill and does not allow frozen backfill. On the building-out edges of the city, in communities such as Sage Hill, Nolan Hill and Carrington in the northwest, each lot’s grade typically has to tie into the subdivision’s drainage design, and under the Lot Grading Bylaw the as-constructed grade is certified by a professional land surveyor, engineer or architect.

Beyond the city limits, Rocky View County’s own development plan describes land that moves from prairie grassland through rolling foothills to woods, deep ravines and coulees in the west, where servicing is primarily private wells and septic systems. There, site preparation is about long access roads, clearing around wells and septic fields that no utility locator marks, and balancing cut and fill on sloping building sites rather than trucking earth over rural roads. New road approaches go through the County’s application and inspection process, and erosion control scales with the size of the disturbed area in both jurisdictions.

Site Prep & Earthmoving: Common Questions

In what order should site preparation work happen?

On a typical new build the order is: locates and layout, land clearing and grubbing, topsoil stripping, the access road rough-in, cut and fill to rough grade, subgrade compaction and proof rolling under pads and driveways, then foundations and services, and finally fine grading and topsoil return. The driveway often comes early because every later truck needs it. Grading happens in two passes, rough before building and fine after backfill. Getting that order right avoids moving the same material twice.

Can site preparation carry on through a Calgary winter?

Some of it can, with limits. Clearing and hauling often work well on frozen ground. Compaction and fill placement are harder: frozen soil will not compact properly, and City of Calgary specifications do not allow frozen material as backfill, so fill work in deep cold usually waits or relies on thawed or imported granular material. Frozen ground does not remove the duty to hand-expose buried utilities near locate marks. Foundation excavations must be kept from freezing under the building code. We plan winter work around what the ground will actually allow.

What should I have ready before booking site preparation?

The more of these you have, the tighter the plan: a legal survey or site plan showing property lines, any grading plan with design elevations, a geotechnical report if one was done, and the locations of wells, septic fields and private power lines on acreages, since utilities do not locate those. Book utility locates at least 3 full working days ahead, longer in busy season. Know which municipality governs the land, whether a road approach application is needed, and roughly how large the disturbed area is, because erosion control requirements scale with site size.

Other Excavation Services

Foundations & Basements

Trenching & Hydrovac

Demolition & Removal

Drainage & Erosion Control

Commercial & Specialized

Talk to Us About Site Prep & Earthmoving

Tell us about the site, what is there now and what is going in. We will recommend the scope that fits, including when a smaller job will do.

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