Ours is a throw-away culture. That even applies to houses. When homes or buildings are demolished to make way for a road, condo development or another house or building, the materials and contents are usually sent to the landfill. As with other characteristics of our consumer-driven societies, it’s wrong.
Many components — wood, concrete, bricks, metal, plastic, vinyl — can be reused, repurposed or recycled. It’s not a new idea, but it hasn’t taken off the way it should. In many jurisdictions, people have been able to apply for salvage rights, allowing them to take useful items from a home or structure slated for demolition. And “deconstruction” companies have been around for a while, but they’re the exception rather than the rule.
In some cases, entire houses are moved to another location and fixed up rather than being demolished. Vancouver circular construction think tank Light House estimates about 20 per cent of demolished homes here could have been moved and another 60 per cent could have been deconstructed, with materials reused or recycled.
Some municipalities are finally seeing the value in keeping materials out of landfills, implementing bylaw and regulation changes to encourage salvaging and recycling. It’s about time!
Vancouver has some rules around recycling materials from house demolitions, depending on the age and character of the home, and offers a “Construction and Demolition Waste Toolkit.”
As a Tyee article reports, population growth in Vancouver meant tearing down 7,100 single-family homes from 2012 to 2023 and about 2,700 every year in the larger Metro Vancouver region to make way for multiplex housing such as highrise towers. About one-third of Metro Vancouver’s landfill is from construction and demolition.
The problem isn’t just the waste of good materials. A 2025 Australian study notes that disposing of construction and demolition waste in landfills “has been widely recognized as a source of leachate, containing toxic contaminants, which pose significant environmental risks.”
And the building and construction sector accounts for about 37 per cent of global greenhouse gas emissions, with close to one-third of that from the energy used to produce materials for a building.
According to the CBC, “Replacing one building with another generates an entire building’s worth of emissions, which means that, from a climate perspective, it’s better to extend the lifetime of those materials and reuse them than discard them.”
The Tyee article highlights a Vancouver company, Vema Deconstruction, that claims to have saved from 135,000 to 225,000 kilograms of construction materials since its founding in 2022. It’s not just buildings that can be recycled. The Patullo Bridge that connected New Westminster and Surrey across the Fraser River was recently replaced, and steel, asphalt and concrete from the old bridge will be recycled.
Diverting construction materials has many benefits. As the City of Vancouver notes, “Recycling and reusing building materials has cost-saving incentives, saves trees, conserves landfill space, reduces greenhouse gas emissions, and supports affordable housing.”
Reclaiming wood is especially beneficial. It means no trees have to be cut down, leaving them to sequester climate-altering carbon dioxide, and for the numerous other benefits trees, especially old-growth, provide. The retained or reused wood continues to store carbon dioxide and other greenhouse gases — when wood decomposes, it emits methane, a potent greenhouse gas. And it can cost less than cutting, transporting and processing timber.
Of course, deconstructing a home takes longer and usually costs more than demolishing and carting it to the landfill. That’s why government incentives and regulations are often necessary, as well as more avenues to sell reclaimed materials.
As with just about everything in our consumer-based societies, though, the economic system itself creates the problem. The bottom line rarely underlines the most environmentally sustainable path. Using more products, doing things quickly and discarding and replacing products and materials all generate more profit than conserving, reducing, reusing and recycling.
We need to aim for a circular rather than a linear economy. This means considering the entire life cycle of the goods we produce — designing products to create zero or minimal waste and pollution, keeping products in use through better design, repair, reuse and recycling and safely returning materials to the natural environment while using renewable energy.
Homes and buildings are a good place to start. Deconstruction should be mandatory.
