Design Catalogue

Multiplexes are different depending on where they are and how much they cost

Toronto is a big city, and the homes you find here are quite diverse depending on where they are located and when they were built. Different house configurations and lot sizes present unique challenges and opportunities. To help show you what is possible, we have developed a Design Catalogue of price-conscious designs for converting the thirteen most common houses in Toronto.

Affordability means different things to different people

We have categorized the designs in this catalogue based on the relative cost and complexity of construction. We have called our categories Low, Medium, High, and New. Each design is mindful of future phasing, so you can move from one level to the next without having to redo work that you have already done.


These designs are interior renovations within the existing building footprint.


These designs are minor additions, accessory dwelling units (garden and laneway suites) and renovations within the existing building footprint.


These designs are major additions or a combination of minor additions, accessory dwelling units, and renovations.

The scope of work can overlap with the designs in the Low and Medium categories.


These designs assume demolition of the existing house and constructiong a new multiplex in its place. Refer to the zoning digram for permittable building sizes for homes.

Pending on lot size, a garden or laneway suite may also be included.

Meet the Housing Types

Each drawing in the catalogue below represents one of the thirteen identified common house types found across the city. When you click on a house image, it will take you to a page containing a zoning analysis, smaple real estate listings, measured floor plans and 3D views for the existing, Low, Medium, High, and New designs.

These types are from different parts of Toronto

The map below shows the areas where single family homes are located within the Greater Toronto Area. Regions coloured in orange-to-dark yellow are single family homes built before the pre- and post-war period. Whereas regions coloured in light yellow show single family homes built after 1967. Lastly, the black numbered dots stand for the thirteen common housing types and where they are.