Webinar May 2026: Development & Legal Strategies for Successful Multiplex Projects
Building Smart: Inside the Legal and Development Roadmap for Ontario's Multiplex Revolution
Last Wednesday, Trainex Hub brought together two practitioners at the sharp end of Ontario's multiplex push: Amin Sarang, a development strategist with hands-on multiplex experience, and Ben Singer, a lawyer at Schneider Ruggiero Spencer Melbourne specializing in condominium law and commercial real estate. The conversation cut through the noise with a clear message: the tools are available and the policy window is open — but getting it right demands understanding both the development economics and the legal architecture from day one.
Watch the full webinar
The Policy Moment Ontario Has Been Waiting For
Sarang opened with the broader context that makes multiplex so compelling right now. Ontario's housing crisis is well documented: demand is high, delivery is low, and the gap between them has stubbornly resisted traditional solutions. In response, federal, provincial, and municipal governments have been reaching for new instruments — and multiplex is one of the most promising.
The City of Toronto, Sarang explained, has emerged as the clear leader. Following Bill 23 — the More Homes Built Faster Act — and a series of subsequent council decisions, Toronto now permits four to six units per lot as of right in most neighbourhoods, plus one additional accessory dwelling, be it a garden suite, laneway house, or similar structure. No lengthy planning application. No committee hearings. Just a building permit.
Developers are running pro formas repeatedly—adjusting assumptions, reducing costs, reworking designs—only to arrive at the same conclusion: the project still doesn’t make sense.
"As of right means you can get the approval very fast. You don't want to go for planning processes — it takes time. But if you apply and stay within the by-law, within three months you can get the building permit. It's amazing. You can get five units, seven units within three to four months."
But Sarang was quick to point out that the real magic number is not three — it is four. Reach five or more units and a project becomes eligible for CMHC's MLI Select program: a financing vehicle that offers up to 95% loan-to-value, 50-year amortization, and rates hovering around 3.6% at the time of the webinar. For developers building rental housing, those are transformative terms.
Beyond the base multiplex framework, Toronto's Major Street Policy — also known as EHON — unlocks a second tier of opportunity. Properties fronting designated major streets can propose up to 60 units as of right, opening the door to a much denser and financially distinct product class. The key constraint there, Sarang noted, is the 10-unit threshold: projects exceeding 10 units trigger site plan approval, a process that adds roughly a year to the timeline and involves multiple city departments.
"There are some numbers that you have to understand — why not 11, why not 12. These are the golden numbers. If you go over 10, you have to go through site plan. So you have to run the model to understand whether the rental option works, or whether another exit makes more sense."
What Is a Multiplex Condominium, and Why Does It Matter?
Singer picked up the thread on the legal side, starting from first principles. Before exploring what a multiplex condominium is, he wanted the audience to understand what a condominium is — because the legal tools available to developers are only as powerful as the developer's understanding of them.
"Think of it as a toolbox," Singer said. "The better you understand the tools, the better you can use them." In essence, a condominium divides ownership of land — either horizontally or vertically — into privately held units and jointly held common elements, governed by a corporation and its board. It solves two problems that neither subdivision law nor common law can easily address: the need to divide a building among multiple owners, and the need to create enforceable, perpetual obligations — like paying condo fees — that would otherwise be unenforceable between private landowners.
Applied to a multiplex — a structure of four to ten units on a single residential lot — the condominium model creates what Singer calls a Multiplex Condominium Unit, or MCU. The product can look deceptively ordinary from the street. Singer shared a photo of one of his firm's client projects: a building at 319 Mortimer that could pass, at a glance, for a single-family home. Inside, though, each unit is separately titled, separately financeable, and separately sellable.
The Case for Selling vs. Renting — and Why the Math Matters
This distinction — rental versus for-sale — was the central strategic tension of the webinar. Sarang framed it as a binary that developers cannot afford to leave unresolved for long.
The rental route, he explained, offers powerful financial tools. MLI Select's loan terms are exceptionally attractive for the right project. Development charge exemptions in Toronto apply to multiplexes up to six units. And the regulatory path is relatively predictable. But those benefits evaporate the moment even one unit is sold. CMHC will not apply its rental financing program to any project with an ownership component.
The for-sale route — the MCU model — offers a different set of advantages: a defined exit, the ability to divide the land cost among multiple buyers (making individual units more attainable), and access to a broader buyer pool. Singer pointed out that unlike small condo tower units, which attract mostly investors, multiplex condominium units are typically family-sized, which opens the entire end-user market.
"Land prices, especially in the City of Toronto, have escalated out of control. Developing MCUs means those land prices get divided up among more families. The build cost is what it is — but the land cost can be effectively shared. That's where attainable home ownership in urban centers actually becomes possible."
A New Market — and a Real Opportunity
The session closed on a note of guarded optimism. The MLI Select window is narrowing — CMHC is tightening its energy-efficiency point thresholds from September. City staff are still learning the product. But Singer pointed out that the MCU market's very novelty is an advantage for those who move first.
"Many times people focus on development planning and forget about the legal framework. They come to the legal team at the very end. But we have to start from the beginning — to understand what is your exit plan and how you can make it structured for your product."
The playing field, as Singer put it, is still remarkably open. For those who understand both sides of the equation, multiplex condominium development may be the most interesting opportunity in Ontario real estate right now.
For more information:
Saman Davari
Project Manager
Saman.davari@trainex.ca