Missing Middle: A Catalogue of Canadian Density

Projects that define how Missing Middle is designed across Canadian Cities

Canada’s housing crisis gets talked about like it’s a single problem. In reality, it’s dozens of local problems layered on top of one another. The missing middle in Toronto does not look exactly like the missing middle in Vancouver. Or Calgary. Or Montreal. The pressures, lot conditions, and zoning constraints are different in every city. Even the idea of what “density” should feel like changes from place to place.

Yet across the country, architects are beginning to build a common language around housing that sits somewhere between the detached house and the tower. ADUs tucked into rear yards. Multi-generational duplexes. Mid-rise courtyard housing. Stacked townhomes. Mixed-use infill projects stitched into commercial streets. Some projects navigate strict zoning constraints. Some question the planning logic behind them. All in all, they point toward something optimistic: there is no single solution to the missing middle, but there is a growing catalogue of thoughtful architectural responses shaped by local culture, policy, economics, and land.

What’s striking is not the lack of ideas. It’s how many good ideas already exist. The problem is that they often are isolated, buried in planning documents or scattered across firm archives. There is still no collective catalogue of how Canadian cities are approaching gentle density, making it difficult for clients, architects, and municipalities to improve off existing precedents.

In many cases, the most interesting housing projects in Canada are no longer the tallest or largest ones. They are the projects figuring out how to add density carefully, incrementally, and close to everyday life. Here are a few projects across Canada that begin to show what that can look like.

Toronto

Torontos missing middle problem isn't just about density. It’s about how difficult the city makes it to introduce gentle infill into low rise neighbourhoods and commercial streets.

For over a decade, Studio AC has worked across Toronto at multiple scales, but their density housing projects feel especially relevant to the realities shaping the city today: Narrow lots, rising costs and the challenge of building within the restraints of a neighbourhoods existing urban identity.

Projects such as 299 Ossington and Dundas Street West act as blueprints for gentle density under these conditions. They show how additional housing can be layered into existing neighbourhoods without relying on towers or large-scale redevelopment. The projects are compact, without feeling very compressed. With restraint and subtle repetition, they establish a clear delineation between public and private space. It’s density that still feels domestic.

Calgary

Calgarys missing middle problem looks different from Toronto’s. The challenge is less about inserting density into a tightly constrained urban fabric and more about reshaping a city that historically has been developed around outward expansion and car-oriented growth. In Calgary, mid-rise mixed use housing often becomes a way to introduce walkability and street life into an urban identity that was never originally designed for it. The conversation is not strictly about adding density. Its about redefining urban-living in a city built around horizontal growth.

Founded in 2007, 5468796 Architecture has become one of Canada’s most recognizable voices in housing and urbanism. Based in Winnipeg but with projects all over Canada, the studio works across housing, public space and research with alot of their work focused on affordability and density.

Courtyard 33, a six storey mixed use building, approaches Calgary’s missing middle through a uniquely social lens. The work doesn’t treat density like a zoning puzzle. Instead, the focus shifts toward livability: shared courtyards, access to light and air, and stronger relationships between private units and communal space. The result feels less like a stack of setbacks and more like an actual living piece of the neighbourhood.

Vancouver

Vancouvers missing middle problem is rooted in the cities overwhelming dependence on single-family housing. For decades, huge portions of the city stayed locked into detached homes while affordability spiralled and density concentrated around towers in the downtown core. Recent rezoning changes on traditionally single-family lots signals a huge shift. Which now opens the door for a softer and more distributed form of density across existing neighbourhoods.

While a lot of Vancouver’s architecture still gets framed for the tower or the detached house, MA+HG Architects has spent years working between those two extremes.

Projects like Six RS and E5 show the offices detailed understanding of Vancouvers evolving zoning landscape and how it can leveraged in to denser but also more thoughtful housing. On paper, the projects are relatively straightforward: multiplex housing inserted onto lots traditionally reserved for detached homes. In reality, they represent a major shift in how density gets integrated into Vancouvers neighbourhoods.

What makes the work compelling is that these projects never rely on oversized massing or dramatic heights. Density is distributed through shared outdoor space, layered unit relationships and highly efficient planning that still feels generous to live in. The result is density that is less imposed but rather, more naturally embedded in Vancouvers neighbourhoods.

What’s Next?

Whats exciting is that this emergence still feels like the beginning. Many of these projects are still acting as prototypes. Small interventions that are testing how Canadian cities might densify without losing grasp of the scale or texture that makes Canadian neighbourhoods feel so livable in the first place. As policies begin to shift and municipalities become more open to change, these ideas will only expand.

The next batch of housing will likely be more ambitious, more refined and far more common. A new generation of architects and builders are stepping into a moment where the missing middle is no longer an afterthought. It’s quickly becoming one of the most important architectural typologies Canadian cities will produce over the next decade.