Adaptive reuse, specifically the transformation of office buildings into affordable housing, offers an innovative and pragmatic solution to the pressing housing crisis, minimizes waste and carbon emissions, and supports resilient, equitable, and adaptable urban and suburban environments.
Adaptive reuse can also support meeting planning objectives like intensification, revitalization of downtown cores. It can also address challenges like flight to vibrancy by small and medium-sized businesses, and the need for small, flexible co-working spaces. In Canada, the challenge we face is not just a housing shortage but a misalignment of space utilization that adaptive reuse seeks to correct.
Understanding the challenge
The post-pandemic era has ushered in a transformative period for urban landscapes, characterized by an unprecedented shift in the utilization of office spaces, leading to stranded commercial office assets.
As of Q4 2024, per Colliers Canada’s State of the Market Report, office vacancies in Canada’s six largest office markets sit at 14%. However, this is only part of the story. The other half points to affordable and supportive housing gaps in suburban and rural Canadian communities – including seniors, transitional, Indigenous, and 3 and 4-bedroom housing for families.
The need is amplified when looking at Canada’s unaffordable housing crisis. In September 2024, Statistics Canada released data collected in 2022 showing that 22.0% of Canadians were living in unaffordable housing, housing that cost more than 30% of the household’s annual income.
Research done by institutions like Western University is pointing to the need for supportive housing investments as well as those in bridging the affordable housing gap. Their research points to the fact that federal government program funding isn’t available for supportive housing, housing that provides on-site supports such as food and medical services, making it extremely difficult to develop.
Addressing both the gaps in affordable and supportive housing is imperative in addressing Canada’s overall housing gap.
Solutions beyond the office building
Office vacancies have driven much of the attention for adaptive reuse to housing in the past five years, as more and more Canadians are working at least part-time from home. However, other types of vacant structures also prove valuable in their conversion to affordable housing.
Residential conversions to consider, and with existing success stories across Canada, include historic buildings such as schoolhouses, churches, and theatres, which may offer bespoke solutions for suburban and rural communities. These varied conversions underscore the multifaceted benefits of adaptive reuse. It promotes sustainability, using the existing structure and minimizing the addition of new construction materials to re-create the space. It enhances community engagement, giving local home and business owners the chance to contribute to ideas for reuse of a building that has been a neighbourhood cornerstone for a number of decades. And it preserves cultural heritage, leaving behind the structure’s façade and other structural elements while still breathing new life into the facility.
Identifying suitable candidates for adaptive reuse requires a strategic selection process that considers building size, vertical transportation, regulatory upgrades, building systems and heritage constraints, among others.
Changes of use can add complexity, requiring additional equipment, higher service quality, and shared ownership and leasing models.
Each of these factors comes with risk, which is very important to manage through the building conversion process. The more you can know about the building and the historic use of the site, the better opportunity there is to properly evaluate and manage the sites risk profile.
The value of conversion
The economic potential of converting office spaces to residential units is not just an answer to urban decay but a strategic investment, a chance to catalyze financial growth while addressing a pressing societal need.
The environmental benefits of adaptive reuse are profound. Refurbishing existing buildings locks in 50 to 75 percent of the building’s original embodied carbon emissions from structural, building envelope, and systems materials, and reduces demolition / landfilling, and new construction emissions. When coupled with efficient, low carbon HVAC technologies, and building envelope upgrades, adaptive reuse is an effective strategy for reducing the building sector’s total emissions and supporting Canada’s net zero by 2050 target.
The impact of adaptive reuse on communities is multifaceted. It opens the door to unique ownership and leasing opportunities which may combine retail, commercial and residential applications in new ways, shortens the overall design and construction process, reducing disruption to local businesses, can revitalize blighted areas and support the retention of culturally significant landmarks, stimulating the return of businesses.
Adaptive reuse can also enhance social equity. By transforming office spaces in prime urban locations into residential units, these projects can provide more affordable housing options in areas where land scarcity drives high property values. Furthermore, incorporating amenities such as childcare facilities, gyms, and community centers into these developments can offer significant social benefits and contribute to the overall well-being of the community.
Social equity can be maximized by looking beyond a singular building, to take, for instance, not just one office, but an entire well-placed office park that is well placed, and convert it into a full work-live-play urban/suburban environment that not only adds housing, but brings holistic urban regeneration. This is similar to what is being accomplished with some transit-oriented development solutions introduced in major cities, but could also be accomplished through a similar approach to an office park redevelopment.
The reintegration of underused areas into the fabric of the city helps mend the urban landscape—turning empty, perhaps even blighted spaces into sources of community pride and social interaction. By fostering mixed-use environments, adaptive reuse encourages a blend of social, economic, and cultural activities, creating more inclusive and vibrant neighbourhoods.
Authors
Emily Miranda is the National Program Lead, Future Ready, for WSP in Canada. Veronica Owens is a Senior Advisor, Sustainability, for WSP in Canada.
