Toronto’s STR bylaw has a definition that catches most basement Airbnb hosts off guard: dwelling unit. If your basement has its own kitchen, bathroom, and entrance, the city considers it a completely separate dwelling unit from your main home. And that changes everything about how you can (and can’t) list it on Airbnb.
Here’s what the bylaw actually says, why it matters, and the legitimate options you have.
The “Dwelling Unit” Definition That Changes Everything
Toronto’s Chapter 547 (amended by By-law 503-2024, effective June 30, 2024) defines a dwelling unit as:
“Separate or self-contained living accommodation for a person or persons living together as a single housekeeping unit in which both food preparation and sanitary facilities are provided for the exclusive use of the occupants of the unit and includes, for the purposes of this Chapter, a secondary suite, laneway suite, garden suite, or similar accommodation.”
Read that carefully. If your basement has a stove, a bathroom, and its own entrance, it meets this definition. The city treats it as a separate dwelling unit, not as part of your home.
This matters because of one critical rule: you can only short-term rent your principal residence, and your principal residence can only be one dwelling unit.
Why You Can’t STR Both Units
The bylaw stacks three rules together that make it impossible to short-term rent your main unit and a separate basement apartment:
Rule 1: One principal residence only. Section 547-4.2(A) states that an operator “shall be deemed to have only one principal residence at any time.”
Rule 2: Only your principal residence qualifies. Section 547-4.2(B) says “No operator shall rent or advertise a property for short-term rental unless it is the operator’s principal residence.”
Rule 3: One registration per person. Section 547-4(B) prevents anyone from holding more than one STR registration.
So if you live upstairs, that’s your principal residence. The basement is a separate dwelling unit. You can’t register it for STR because it’s not where you live. And you can’t hold two registrations anyway.
”Dwelling Unit” vs. “Part of a Dwelling Unit”: The Critical Distinction
This is where it gets nuanced. Toronto’s bylaw recognizes two types of STR:
Entire-unit rental: You vacate your dwelling unit and rent the whole thing to guests. Capped at 180 nights per year.
Partial-unit rental: You rent out part of your dwelling unit while you continue living there. No night limit at all. You can do this 365 days a year.
Here’s the key: a partial-unit rental means renting a room within your dwelling unit that is your principal residence. If your basement is a separate dwelling unit (with its own kitchen, bathroom, entrance), renting it out is NOT a partial-unit rental. It’s an entire-unit rental of a different dwelling unit, one that isn’t your principal residence.
If the basement is NOT a separate dwelling unit (no kitchen, shared entrance, no self-contained facilities), then it IS part of your dwelling unit. In that case, renting it to guests while you live upstairs qualifies as a partial-unit rental with no night cap. This is the scenario where hosts have the most flexibility.
The Grey Area: What Makes a “Dwelling Unit”?
The definition hinges on “food preparation and sanitary facilities provided for the exclusive use of the occupants.” This creates a grey area that some hosts are navigating:
Clearly a separate dwelling unit: Full kitchen with stove/oven, dedicated bathroom, separate entrance. This is a secondary suite. The city considers it a separate dwelling unit, and you can’t STR it unless you live in it.
Clearly NOT a separate dwelling unit: No kitchen, shared bathroom, internal access only. This is just a lower level of your home. Renting it while you live upstairs is a partial-unit rental.
The grey zone: Kitchenette with microwave and mini fridge but no stove. Shared entrance but separate living space. Bathroom dedicated to the basement but accessed from a common hallway.
Some hosts have removed stoves or capped gas lines in their basements to argue the space no longer meets the dwelling unit definition (no “food preparation” facilities). Without a stove or oven, the argument is that it’s just a lower level of the home, not a self-contained unit.
In April 2024, Council narrowed enforcement staff’s ability to challenge these arrangements. The original proposed amendments would have given inspectors discretion to flag units “that could readily be modified to” meet dwelling unit standards (like a kitchen without a stove that clearly used to have one). That language was removed. Now, enforcement can only look at what currently exists, not what the space could easily become.
What’s Actually Happening in Toronto
A Ricochet Media investigation found dozens of listings where hosts openly describe living upstairs while renting basement units below. Some listings explicitly say things like “a secondary suite of the house in which I live upstairs.”
Under the bylaw, most of these listings are violations. The city has responded by hiring 21 new enforcement positions and implementing new verification procedures (as of September 2024) that require hosts to provide documentation beyond government ID to prove principal residence status, including potential in-person interviews.
The enforcement is real. One host on Salem Avenue had her basement listing revoked for “principal residence concerns.” The city is actively checking.
Your Legitimate Options
Here’s what actually works within the law:
Option 1: Partial-Unit (Basement Is NOT a Separate Dwelling Unit)
If your basement doesn’t have its own kitchen (no stove/oven), it’s part of your dwelling unit. Register for partial-unit, rent it year-round while you live upstairs. No night cap. This is the simplest, most profitable setup.
We’ve seen hosts in the Beaches, High Park, and Leslieville do really well with this model. One client with a finished lower level on the Danforth consistently earns $2,800 to $3,200 per month.
Option 2: Entire-Unit (You Live in the Basement)
If you actually live in the basement as your principal residence, you could register the basement for STR. But you’d be capped at 180 nights when renting it as an entire unit. Most hosts don’t choose this option.
Option 3: Mid-Term Rentals (28+ Days)
This is the workaround for separate basement apartments. Mid-term rentals (28+ consecutive days) are completely exempt from Toronto’s STR rules:
- No registration required
- No principal residence requirement
- No night limits
- Works even if the basement is a fully separate dwelling unit
Corporate travelers, students, and people relocating to Toronto need furnished monthly rentals. The demand is strong, especially near downtown, universities, and hospitals. You’ll often get more reliable income than chasing weekend bookings.
Our mid-term rental management service handles everything from marketing to guest screening for monthly rentals.
Option 4: Whole-Home Listing (Both Units Together)
If you list the entire property (your unit plus the basement) as one rental and vacate while guests stay, that’s an entire-unit rental of your principal residence. Capped at 180 nights, but you can charge more for the extra space. This works well for hosts who travel frequently.
Which Option Fits Your Situation?
Your basement has a full kitchen (stove, oven, fridge): It’s a separate dwelling unit. You can’t STR it while living upstairs. Go mid-term (28+ days) or list the whole property together as one rental.
Your basement has no kitchen or just a kitchenette (microwave, mini fridge, no stove): It’s part of your dwelling unit. Register for partial-unit, rent year-round with no night limit while you live upstairs.
It’s an investment property: STR is off the table regardless. Mid-term rentals are your path. Strong demand, good returns, and no registration needed.
You’re outside Toronto: Different GTA municipalities have different rules. Some cities don’t have principal residence requirements at all. Check our city-specific guides for Mississauga, Oakville, or Richmond Hill.
The Bottom Line
Toronto’s dwelling unit definition is the rule that trips up most basement Airbnb hosts. If your basement is self-contained with its own kitchen and bathroom, it’s a separate dwelling unit under Chapter 547. You can’t STR it while living upstairs, period.
The good news: you have real options. Remove the stove and register as partial-unit. Go mid-term for 28+ day stays. Or list the whole property together. Each approach is legitimate, and each works well for the right situation.
Need help figuring out the best approach for your property? We help Toronto homeowners with exactly this decision every day. Our full Airbnb management service includes compliance support so you know you’re set up correctly from day one.
Contact us at (647) 957-8956 or get your free estimate.
Sources: Toronto Municipal Code Chapter 547, By-law 503-2024, City of Toronto STR Operators page. Bylaws change frequently. Always verify current rules with the City of Toronto.