Toronto Fourplex Builder
As-of-right in every Toronto neighbourhood. We design and build fourplexes with smart density, family-sized units, and strong rental returns — from feasibility to keys in hand.
Why Build a Fourplex in Toronto
Toronto fourplexes are now as-of-right on every residential lot — no rezoning required. This means faster approvals, lower soft costs, and a clear path to rental income. Add a garden suite and you unlock CMHC MLI Select financing for even better returns.
Our Fourplex Approach
We've built enough fourplexes to know what makes the difference between a standard build and a high-performing asset.
Every fourplex unit designed for comfort with no wasted space — maximizing rental potential and long-term asset value.
Fourplex architecture crafted to reflect and elevate local character — a welcome addition to any Toronto street.
High-efficiency mechanical systems, quality insulation, and durable materials that reduce ongoing costs for fourplex owners.
Construction quality and refined finishes that ensure your Toronto fourplex stands the test of time with minimal maintenance.
Expert navigation of Toronto's building permits and zoning — we handle codes and compliance from day one.
Private outdoor spaces, in-suite laundry, and modern finishes that attract and retain quality tenants at premium rents.
Built for Real Families
As parents ourselves, we understand what families actually need in a fourplex. Our units are designed with the daily realities of family life in mind — not just square footage, but thoughtful details that make a fourplex feel like home.
The Fourplex +1 Strategy
A Toronto fourplex is great. A fourplex with a garden suite is better. Adding a fifth unit in the backyard unlocks better financing, stronger cash flow, and positions your property for long-term value growth.
5+ units qualifies your fourplex for CMHC MLI Select financing — lower rates and up to 50-year amortization for dramatically improved cash flow from day one.
Fifth unit revenue with minimal additional land cost — maximize return per square foot of lot
Same trades, same timeline — building the garden suite alongside the fourplex saves time and money
Detached garden suites command top-of-market rates — more total revenue from your fourplex property
Since Toronto's zoning reform, fourplexes are permitted as-of-right on virtually every residential lot in the city. That means you can build a fourplex without rezoning, without a Committee of Adjustment hearing, and without the delays and costs that come with minor variance applications. For property owners and investors, this represents a once-in-a-generation opportunity to create density and rental income on land that was previously limited to single-family homes.
A well-designed Toronto fourplex typically includes four self-contained units across three storeys, each with private entrances, in-suite laundry, and outdoor space. Unit sizes range from one-bedroom to three-bedroom configurations depending on the lot and target tenant demographic. Our fourplexes are designed with family-sized units, durable finishes, and thoughtful details like stroller storage and soundproofing between floors.
When paired with a garden suite or laneway house, a fourplex reaches five total units — qualifying for CMHC MLI Select financing with up to 50-year amortization periods and interest rates below conventional mortgage products. This financing advantage alone can transform the economics of a fourplex project. We design every fourplex with the +1 garden suite strategy in mind so you can access MLI Select from day one.
Fourplex construction costs vary depending on lot conditions, unit sizes, and finishes, but as a low-rise wood-frame build, costs remain manageable compared to larger concrete multiplexes. We provide detailed cost estimates during our free consultation so you know exactly what to expect. The as-of-right approval path also significantly reduces soft costs compared to projects requiring rezoning or variances.
Green Street Flats has designed and built fourplexes across Toronto's most desirable neighbourhoods, from Little Italy and Seaton Village to Broadview North and the Annex. We handle every stage of the fourplex development process — from initial feasibility and architectural design through to building permits, construction, and final occupancy. Our fourplexes are designed with an owner's mindset: maximizing rental income, minimizing operating costs, and creating buildings that attract and retain quality tenants.
Featured Fourplex Projects
Start Your Fourplex
Whether you have a property in mind or are just exploring fourplex options, we're happy to have an honest conversation about what makes sense for your situation.
What to Expect
Tell us about your fourplex project or property.