Residential House & Garage Demolition in Calgary

The Problem It Solves

Most Calgary teardowns are not stopped by the machine work. They are stopped by paperwork done in the wrong order. A lot owner books a demolition date, then learns the City will not release the demolition permit until the asbestos paperwork is in, the gas meter is still live, and the water service has not been cut at the main. Every one of those items has its own queue, and none of them can be rushed by the demolition crew. A builder waiting on the lot loses time, and a trade booked for the next stage may not be able to hold the date.

The second problem sits inside the walls. Older houses and garages can hold asbestos-containing materials, commonly in finishes such as drywall compound, plaster, flooring, pipe wrap and textured coatings, and nobody can tell by looking. Knock a house down before it has been inspected and fibres can be released into a debris pile that workers load and neighbours live beside, and the City will not release a demolition permit without the asbestos paperwork anyway. There is no fix for released fibres after the fact. The only safe order is inspection first, abatement by the people qualified to do it, then demolition.

The third problem is what gets left behind. A crew that pushes the house into the basement, buries broken concrete and pulls only the easy material leaves a hole full of rubble, old footings and cut-off services. The next contractor then finds it the hard way, digging for a new foundation that has to bear on undisturbed soil, not on buried debris. The cost of sorting it out lands on the new build, usually after the concrete forms are already booked.

How It Works

We run the teardown in the order the City and the province require. The asbestos inspection is done by a professional asbestos removal company, and any asbestos found is removed by that abatement contractor before we arrive. We are not the abatement contractor and we do not sample building materials. We wait for the clearance paperwork, confirm the service disconnections are complete, confirm locates are marked, and only then bring machines onto the lot. That sequence is what lets the permit inspection go through without a stop.

The house comes down with an excavator working from the outside in, pulling the roof and walls into the building's own footprint so debris does not spill onto fences, laneways or the neighbour's yard. We sort as we go: metal, clean concrete, wood and mixed waste land in separate piles and separate loads. Concrete and asphalt go to a recycler that accepts them, never to a City landfill as mixed loads, because City landfills state they do not recycle concrete, asphalt or brick and charge a surcharge rate on loads mixed with them.

Once the superstructure is gone we break out the basement walls, the floor slab and the footings with a hydraulic breaker, pull the old weeping tile and service stubs, and load everything out. Then we either backfill the hole with clean material and level the lot, or leave a clean, safely fenced excavation ready for the next foundation, whichever the builder's plan calls for. You get a lot that a surveyor can stake and an excavator can dig without surprises.

What Decides the Specification

Three things set the scope of a teardown. The first is the building itself: a bungalow with a full basement means much more concrete to break and haul than a slab-on-grade garage, and a two-storey house needs a longer reach. The second is what the hazardous materials report found, because abatement has to finish before the machine starts and some materials change how debris is handled. The third is what the next step needs: a builder digging a new basement right away may want the hole left open, while a lot that will sit for a season needs to be backfilled, levelled and made safe.

Access sets the rest. A lot with a paved laneway and room to stage trucks lets us load as we demolish, which keeps the debris pile small. A narrow lot with overhead lines, mature public trees near the boulevard and a neighbour's garage on the property line means a smaller machine, more handling and more loads. Soil matters at the end: where old footings sat on clay and the new foundation must reach undisturbed soil, we remove every piece of buried rubble so the new excavation starts clean.

Around Calgary

Calgary's teardown-and-rebuild work concentrates in the communities the City classes as inner city, where established lots are redeveloped with infill. Altadore in the SW and Mount Pleasant in the NW are both in that class. On a narrow inner-city lot, the new house commonly digs a different footprint from the one it replaces, so the old basement walls, footings and every buried service stub have to come out completely, not just the parts inside the new excavation line. Where a laneway runs behind the lot, trucks can load from the back while the street side stays clear for neighbours.

Renfrew, in the NE, is also an inner-city community, and a lot there with an older house and a detached garage means two structures, two slabs and sometimes a private power line running between them that no utility locator will mark. The City says lead water services were used for a short period, mainly between 1939 and 1947, and that galvanized steel services also exist; owners are asked to contact the City about them. On any lot where the service type is unknown, we confirm how the water service will be cut at the main before we plan the dig at the front of the property.