Multiplex Toronto Housing: A Step Towards Inclusive Neighborhoods in Toronto


The City of Toronto is taking significant strides to address housing shortages and establish more inclusive neighbourhoods by adopting the Official Plan and Zoning By-law amendments. Effective May 10, 2023, these amendments permit the construction of multiplexes (residential buildings with up to four units) across the city. Part of the Expanding Housing Options in Neighborhoods (EHON) initiative, these changes aim to introduce a broader range of housing options in Toronto’s low-rise neighbourhoods.

Understanding the Importance of Multiplex Housing


Multiplex housing, which includes duplexes, triplexes, and fourplexes, consists of residential properties with two, three, or four units within a single building. Multiplexes are crucial in promoting equitable city growth by offering different-sized living spaces for various household sizes and income levels.

Key Principles Guiding the Multiplex Toronto Study


To maximize the positive impact on both existing and new Toronto communities, the Multiplex study was developed according to vital principles:

1. Enhancing quality of life and providing diverse choices for various communities

2. Maintaining respect for each Toronto neighbourhood’s unique character

3. Encouraging opportunities for development within lower-scale zones

4. Fostering green and livable neighbourhoods

5. Simplifying processes and expanding permissions regarding multiplex construction

The Multiplex Toronto Study: A Comprehensive Approach

The study aimed to permit the inclusion of up to four residential units within current allowable building sizes throughout most areas in Toronto. Zoning changes were implemented to facilitate multiplex construction more easily, enabling taller structures in some cases and permitting multiple porches, decks, and balconies per unit.

Gathering Public Input via Consultation


An extensive consultation process took place during the study’s development period to gather stakeholder input from all over the city. This feedback was invaluable in shaping the final zoning by-laws and official city plan amendments.

Impact of the Final Amendments


Two significant changes resulted from the study’s findings: an Official Plan Amendment outlining policies for multiplexes in designated neighbourhoods and a Zoning By-law Amendment that created specific provisions for duplexes, triplexes, and fourplexes. The latter amendment standardized building requirements for different types of multiplexes exempted some design elements from regulations, and eliminated restrictions on multiple-front entrances for secondary suites.

Related Projects Toronto housing


The EHON initiative is just one component of Toronto’s multifaceted approach to diversifying its housing landscape. Additional projects include the Urban Land Institute Toronto Technical Assistance Panel and the ReHousing research project spearheaded by the University of Toronto.

The widespread adoption of multiplex housing in Toronto signifies exciting opportunities for accessible and vibrant communities. With public input and well-considered zoning changes, greater diversity in housing options is on the horizon for residents across the city.

By James Fields

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