1. You Can Convert a Single-Family Home into a Duplex or Triplex
In many Toronto neighbourhoods, especially areas with older homes like The Junction, Leslieville, and Roncesvalles, it's possible to legally convert a single-family house into a duplex or triplex. This is a great way to increase rental income or accommodate multigenerational living without purchasing a separate property.
The key is to assess the existing layout, structure, and square footage to determine if a conversion makes sense. At Oriel Renovations, we help clients explore layout options that meet building code and maximize use of space.
2. Zoning and Permits Matter—A Lot
Before beginning any duplex or triplex renovation, it's essential to confirm your zoning designation with the City of Toronto. Properties must meet specific criteria based on their zone, such as R (Residential), RD (Residential Detached), or RM (Residential Multiple).
If your current zoning doesn’t allow for multi-unit dwellings, you may need to apply to the Committee of Adjustment for a variance. Our team has experience navigating Toronto’s permitting process and can assist with applications, site plans, and communication with the city.
3. Fire and Sound Separation Are Non-Negotiables
Each unit in a multi-residential home must meet Ontario Building Code (OBC) fire separation standards, including fire-rated walls, doors, ceilings, and utilities. This helps ensure safety in the event of a fire and is legally required for all legal duplex and triplex conversions.
Soundproofing is another critical component, especially in a rental context where privacy is important. We install high-quality insulation, resilient channels, and sound-dampening drywall to reduce noise transfer between units and increase tenant satisfaction.
4. Separate Utilities Can Increase Property Value
While not always required, having separate hydro, water, and gas meters for each unit can make the property easier to manage and more appealing to prospective tenants. Independent utility billing reduces landlord-tenant disputes and gives renters more control over their usage.
For homeowners planning to rent out units long-term, this setup can also simplify accounting and tax deductions. Our licensed electricians, plumbers, and HVAC specialists handle full utility splits and service upgrades to ensure safe, efficient systems.
5. Kitchens, Bathrooms, and Laundry - Per Unit
Every legal unit in Toronto must include its own full kitchen and bathroom. This includes functional layouts with proper ventilation, plumbing, and access to natural light where applicable.
Including ensuite laundry in each unit is also a major value-add in today’s rental market. We help you plan compact, stacked laundry areas or integrate units into closets and kitchens without compromising style or space.
6. Expect to Spend $150,000 to $450,000+
The cost of a duplex or triplex renovation depends on many factors, including the size of the home, the number of units, and the extent of structural or mechanical upgrades. A basic update of an existing duplex may fall in the $150,000 to $250,000 range, while a full conversion or luxury finish could exceed $400,000 per unit.
In Toronto, older homes often require electrical rewiring, insulation upgrades, and asbestos removal, which can increase costs. At Oriel Renovations, we provide detailed, transparent quotes so you know exactly where your investment is going.
7. Basement Units Require Special Attention
Legal basement apartments in Toronto must meet specific requirements for ceiling height, light, ventilation, and emergency egress. In many cases, older basements do not meet the minimum height of 1.95 metres (6’ 4”) and require underpinning to comply with code.
We evaluate each basement for viability and offer waterproofing, walkout construction, and window enlargements as needed. A well-designed basement unit can significantly increase your home’s value and rental potential, especially in high-demand areas like East York and Corso Italia.
8. Design for Tenant Comfort and Long-Term ROI
Good design doesn’t just attract quality tenants—it helps retain them. Open layouts, modern finishes, and thoughtful lighting all contribute to a more livable and marketable space.
We also focus on durable, easy-to-clean materials that reduce long-term maintenance. Our design-build team works with you to create layouts that balance functionality, aesthetics, and code compliance in every unit.
9. You May Qualify for Rebates or Tax Incentives
There are several rebate programs and grants available for energy-efficient upgrades, secondary unit creation, affordable housing improvements, and accessibility measures. Programs like the Canada Greener Homes Grant or Enbridge rebates can help offset part of your renovation cost.
We keep clients informed about current incentives that apply to multi-unit residential projects in Toronto. Our team can assist in gathering the documentation and energy assessments required to qualify.
10. Work with a Team Who Knows the Toronto Market
Renovating or converting a duplex or triplex is complex and requires an experienced contractor who understands Toronto’s unique building landscape. From the character homes of Cabbagetown to the laneway properties in Little Portugal, we’ve worked in neighbourhoods all across the city.
We know how to manage zoning regulations, preserve heritage features, and meet tight timelines in a high-demand market. Our team at Oriel Renovations is here to guide you every step of the way, with clear communication and quality craftsmanship.
Let’s Bring Your Multi-Unit Vision to Life
At Oriel Renovations, we specialize in transforming single-family homes and existing duplexes or triplexes into beautiful, income-generating properties that meet modern standards. Whether you're planning a legal conversion or a full-scale renovation, we're here to help you navigate zoning, design, construction, and compliance in Toronto.
Contact us today to schedule your consultation and take the first step toward making your property more functional, and profitable.