Multiplex Design & Build
Toronto's zoning now allows up to four units as-of-right on most residential lots, and up to six in select wards. Toronique builds multiplex housing with the same precision, accountability, and guaranteed pricing we bring to every project.
Multiplex Construction Built on 20+ Years of Toronto Experience
Toronto's multiplex bylaws have created one of the most significant opportunities in the city's residential construction landscape. Homeowners and investors can now build duplexes, triplexes, and fourplexes on lots that were previously restricted to single-family homes, without rezoning. In select wards, sixplexes are also permitted. Development charges are waived for the first six units, making the economics more attractive than ever.
But the opportunity only works if the construction is done right. Multiplex projects involve complex code requirements: fire separation between units, independent mechanical systems, separate entrances, egress compliance, and sound isolation. These are not details you can figure out during the build. They need to be resolved in the design phase by a contractor who understands multi-unit residential construction.
Toronique has been building across Toronto for over two decades. We bring that structural knowledge, permit experience, and project management discipline to every multiplex we take on, whether it's a conversion of an existing home or a new build from the ground up. Every project comes with guaranteed flat-rate pricing and a guaranteed completion date.
Multiplex Services We Offer
New Multiplex Construction
Purpose-built duplexes, triplexes, and fourplexes constructed from the ground up. New builds allow for optimized unit layouts, stacked kitchens and bathrooms for mechanical efficiency, modern building envelope performance, and clean separation between units from the start. This is the most predictable path to a high-quality multiplex with minimal compromise on unit size or livability.
Multiplex Conversions
Converting an existing single-family home into a legal multiplex. This approach works best when the existing structure has solid bones, adequate ceiling heights, and enough interior volume to create code-compliant units. We assess structural capacity, plan fire separation and egress upgrades, and manage all plumbing, electrical, and HVAC modifications required to create independent, self-contained units.
Zoning Review & Permit Management
Before any design work begins, we review your property's zoning designation, lot dimensions, and bylaw compliance to confirm what's buildable. We manage all building permit applications, coordinate with the City of Toronto, and handle Committee of Adjustment submissions when minor variances are required. Getting this right at the start prevents costly redesigns later.
Investment-Ready Unit Planning
For investors building multiplexes for rental income, we work with your team to plan unit mixes, optimize layouts for tenant appeal, and select durable, low-maintenance finishes that reduce long-term operating costs. Our goal is to deliver a property that performs financially from day one, not just one that looks good on paper.
Why Build a Multiplex with Toronique
Proven Builder, Not a Startup
Many of the firms marketing multiplex construction in Toronto launched in the last two years to chase the bylaw change. Toronique has been building in this city since 2003. We understand Toronto's building stock, lot conditions, permit processes, and trade networks at a depth that new entrants simply don't have. Multiplex construction is new as a category, but the skills it requires, structural reinforcement, multi-unit mechanical coordination, code compliance, are skills we've been applying for decades.
Guaranteed Pricing on Complex Builds
Multiplex projects carry more variables than a standard single-family build: fire-rated assemblies, independent HVAC systems, separate utility metering, and additional plumbing runs. These variables are where budgets spiral on cost-plus contracts. We price the full scope upfront and guarantee it, so your pro forma stays intact and your investment thesis holds.
End-to-End Accountability
From zoning review and design coordination through permits, construction, and final inspection, one team manages every phase. You won't need to coordinate between a designer, a permit consultant, and a builder. Toronique handles the full pipeline, and your guaranteed price covers all of it.
Multiplex and Multi-Unit Projects
Our experience in custom home building and complex renovations translates directly to multiplex construction. These projects reflect the structural expertise and project management discipline we bring to every build.
New Build
Custom Home
2025
9 Salonica Avenue
New Build
Multiplex
2026
560 Atlas Avenue
New Build
Multiplex
2025
171 Cedric Avenue
New Build
Custom Home
32 Saintfield Avenue
New Build
Landscape Design & Build
2025
56 Misty Crescent
Landscape Design & Build
2024
39 Denlow Boulevard
Frequently Asked Questions
Most residential lots in Toronto zoned R, RD, RS, RM, or RT now permit duplexes, triplexes, and fourplexes as-of-right, meaning no rezoning is needed. In nine wards (Toronto and East York plus Ward 23), sixplexes are also permitted. You can check your property’s zoning using the City of Toronto’s interactive zoning map, or contact us and we’ll review it for you.
Costs vary based on whether you’re converting an existing home or building new, the number of units, and the level of finish. New-build fourplexes in Toronto typically range from $350 to $550+ per square foot. Conversions can be more cost-effective but depend heavily on the condition of the existing structure. We provide a guaranteed flat-rate price after assessing your property and finalizing the design.
Yes. The City of Toronto currently waives development charges for the first six residential units on a lot. This includes any combination of units in the main building plus a laneway or garden suite. This policy significantly improves the financial viability of multiplex projects.
A conversion involves reconfiguring an existing home into multiple units, adding fire separation, independent entrances, and separate mechanical systems. A new build starts from demolition or a vacant lot and constructs a purpose-built multiplex. New builds offer more flexibility in layout and unit sizing, while conversions can be faster and less expensive when the existing structure is sound.
A new-build fourplex typically takes 10 to 14 months of construction, plus 3 to 6 months for design and permitting. Conversions are often faster, ranging from 4 to 8 months of construction depending on scope. We include a guaranteed completion date in every contract.
