Sixplex Study for Ward 23

This study demonstrates how multiplexes with up to six units can be built on a range of residential lots, using architectural case studies. For the purpose of this study, we focused on six-unit multiplexes, as they would have the greatest impact on unit creation, and used parcels within Ward 23 – Scarborough North.

Our findings outlined substantial potential within Ward 23 to accommodate six-unit multiplexes.

Click to see the Case Study designs!

Client:
City of Toronto

Date:
2024

Team:
Michael Piper
Sam Eby
Janna Levitt
Lola Abraham
Bradley Dunn
Josh Kirk

Study Framework

Mapping
We developed a framework that cross-referenced a range of parcel sizes with the minimum dimensions required to construct a six-unit multiplex and surveyed parcels to identify viable lots under RD, RS and RT zoning regulations, excluding corner lots. 

Case Studies
We selected three typological examples and focused on different site conditions, internal unit configurations, and parking arrangements to develop in detail

Building Typology according to Parcel Size:

For our mapping analysis, we have used a method of typological analysis to assess the number of lots suitable for six-unit multiplexes, as well as the quality of units and buildings that can feasibly be developed. The analysis cross-referenced a range of parcel sizes (widths and lengths) with the minimum dimensions necessary for a sixplex. The analysis shows that building proportion is dependent on parcel proportion.

We established this range of parcel sizes according to width, starting with a six-meter wide lot. We tested the minimum-size sixplex possible on lots with widths in two-meter increments: 6M, 8M, 10M, 12M, and 14M wide. For each width increment, we explored two parking scenarios.
.
After designing the minimum size sixplex for each lot width increment, we added the required setbacks and measured the required lot depth needed to accommodate the building. These lot depths provided the basis for a range of lot depths for each lot width increment.

---