Can You Airbnb a Garden Suite in Ontario?
Usually not the way people picture it. Toronto, Ottawa and Mississauga only allow short-term rentals in your own principal residence. Niagara-on-the-Lake, The Blue Mountains and Tiny Township shut out accessory units outright. And if you financed the suite with CMHC or took a local grant, anything under 90 days or below market rent is off the table anyway.
At a glance
Rules change every year or two. Check your town’s licensing page before you buy a single throw pillow.
In most Ontario cities you cannot run a separate garden suite as an Airbnb. Toronto, Mississauga and urban Ottawa limit short-term rentals to the operator’s principal residence, so you would have to live in the suite yourself. Some resort towns ban short-term rental in accessory units entirely. Collingwood is a rare exception with a $2,500 licence class for additional residential units.
The Province Gave You the Suite to House People
The Planning Act changes that let you build a garden suite were sold as housing supply. Town councils took that literally. When a new backyard unit turns into a weekend party house, the neighbours call, and councils respond by writing the suite out of short-term rental rules.
So the permission to build a garden suite and the permission to rent it by the night come from two different by-laws. Zoning lets you build it. A separate short-term rental licensing by-law, and sometimes another zoning clause, decides whether you can list it.
The definitions also differ. Toronto counts a short-term rental as anything under 28 consecutive days. Mississauga, Ottawa and Wasaga Beach use 30. Niagara-on-the-Lake uses 28. CMHC and the CRA use 90. That gap is where a lot of people get caught.
Can You Airbnb a Garden Suite? The Rules by Town, 2026
What each town’s own pages and by-laws say as of October 2026. Where a town says nothing about accessory units, we say so instead of guessing.
| Town | Can the garden suite be a short-term rental? | Licence and fees | Other rules worth knowing |
|---|---|---|---|
| Toronto | Only if you are the principal resident of the garden suite. If you live in the main house, you cannot rent the suite short-term. | Registration $390 (2026 renewal $390); 6% Municipal Accommodation Tax | Under 28 days counts. One registration at a time. Entire-home rental capped at 180 nights a year. Fine for operating unregistered: $1,000. |
| Mississauga | Licences only for the place you live; not for additional or investment properties. Garden suites not addressed separately; call 311. | $283 per year | No more than 30 days in a row, up to 180 days a year. Fines up to $100,000. |
| Ottawa (urban) | A coach house or additional unit can be a short-term rental only if it is exclusively and separately occupied as the host’s own principal residence. | Host permit $112 for two years | Under 30 nights counts. Not permitted in agricultural subzones AG4 to AG8. |
| Ottawa (rural, outside villages) | A cottage, secondary suite or coach house can be rented as a “cottage rental.” | Cottage rental permit $112 for two years | Separate permit from any principal residence permit. |
| Collingwood | Yes, with a Class C (Additional Residential Unit) licence. Unit must be on the same lot as a single detached dwelling that is the licensee’s principal residence, and the licensee must own the property. | Class C $2,500 per year ($500 due at application) | Maximum 200 licences town-wide, then a waitlist. By-law and fire inspections before issue. |
| The Blue Mountains | No. The Town’s ARU guide says an additional residential unit is not permitted on a lot used for short-term accommodation. | Per Fees and Charges By-law | STA licensing tied to zoning; $2,000,000 liability insurance required; fines up to $50,000 first offence. |
| Tiny Township | No for a detached suite. The zoning by-law does not permit a short-term rental in any accessory building or structure, including a bunkie. Full dwelling unit rental only. | New $2,000, renewal $1,750 (from Jan 1, 2026) | 300-licence cap. Two persons per bedroom. Building inspection includes the sewage system. |
| Wasaga Beach | Not addressed. The by-law covers “a dwelling unit or part of a dwelling unit,” and you must comply with zoning. Ask the Town first. | Set in the Fees and Charges By-law; licences expire April 1 each year | 30 days or less counts. Demerit points; 7 can suspend, 14 can revoke. Insurance lapse means automatic suspension. |
| Niagara-on-the-Lake | No. “An accessory dwelling unit is not eligible for a Short Term Rental license.” | New application $800, renewal $600, plus annual fee | 28 days or less counts. Must front a public road and be serviced with water and sewage approved by the Town. |
| Barrie | We could not find a short-term rental licensing by-law in force. Council directed staff in March 2024 to study further regulation. | None found | Check with the City before listing. If you took Simcoe County secondary suite money, short-term rental is out (see below). |
Last checked October 2026 · Sources: Toronto STR operators, Mississauga STA licence, Ottawa short-term rentals, Collingwood STA licensing, Blue Mountains ARU guide, Tiny STR, Wasaga Beach By-law 2026-08, NOTL By-law 2025-032, Barrie Motion 24-G-033
Not on the list? Most Ontario towns that license short-term rentals put it on a “short-term rental” or “short-term accommodation” page under by-law or licensing. If your town has none, zoning still applies, and many rural zoning by-laws only permit tourist accommodation in specific zones. Our free Rules Checker is a good first stop.
Your Financing Might Decide Before Your Town Does
Even in a town that allows it, the way you paid for the suite can kill the Airbnb idea.
CMHC refinance: nothing under 90 days
The CMHC-insured refinance that lends up to 90% of as-improved value says the suite cannot be rented for any period of less than 90 consecutive days. That covers Airbnb and also the furnished 30-day stays people use to step around city rules. Full details on our CMHC secondary suite refinance page.
Affordable housing grants: long-term, below-market rent
Local programs such as the County of Simcoe Secondary Suites Program pay up to $50,000 per unit in exchange for renting at an affordable level to an eligible tenant. The County’s earlier fact sheet set that commitment at 15 years. Short-term rental doesn’t fit those terms, and breaking them usually means paying the money back. Read the agreement before you sign it, not after.
The HST rental rebate assumes long-term tenants
If you build a garden suite to rent, the CRA can treat you as a builder and charge HST on the suite’s value when it is first rented. The New Residential Rental Property Rebate that softens that blow is built around long-term residential tenancies, and a nightly rental is a different kind of supply. Run the free rental HST check or read how the rental rebate works before you choose a rental model. This is not tax advice. Short-term income is taxed too; see tax on short-term rentals.
The CRA penalty for breaking the town’s rules: since January 1, 2024, the Income Tax Act denies all expense deductions for a short-term rental (under 90 consecutive days) that is in a place where short-term rentals are not permitted or that doesn’t comply with the local registration, licence and permit rules. That means you pay income tax on gross rent, not net. Source: CRA, changes to deductions for short-term rental income.
Last checked October 2026 · Source: CMHC Refinance fact sheet, CRA
Eight Guests on a Septic Bed Built for Grandma
On a rural lot the septic system is the quiet partner in every rental decision. A garden suite sized for one retired parent puts a modest, steady load on the system. A short-term rental with a full house every weekend puts a heavy, spiky load on it, and the bed doesn’t get a vote.
Tiny Township’s own STR page warns that going over the maximum occupancy can make the septic system malfunction, and its licence inspection checks the sewage system against Township records. That is a township that has seen a few beds fail.
If your suite shares a system with the house, or you are adding one, size it for the real use, not the brochure use. SepticReplacement.ca does septic design and capacity checks for rural lots. A failed bed costs a lot more than a season of bookings.
Six Mistakes We See Every Year
Assuming “allowed to build” means “allowed to Airbnb”
They are separate by-laws. Get the short-term rental answer in writing from the licensing office before you design the suite around nightly guests.
Living in the main house and renting the suite
In Toronto, Mississauga and urban Ottawa, that is exactly what the principal residence rule is written to stop. Toronto says it plainly: you can short-term rent a garden suite only if you are the principal resident of the suite.
The 30-day workaround
A 31-day furnished rental may dodge a city’s short-term definition, but it still breaks CMHC’s 90-day rule if you financed that way, and a longer stay can bring the tenant under the Residential Tenancies Act. Get advice before you rely on it.
Skipping the insurance call
A homeowner policy rarely covers paying guests in a separate unit. Toronto tells operators to ask their insurer; Blue Mountains requires $2 million liability. See our garden suite insurance guide.
Taking grant money and then listing it
Affordable housing grants come with a long-term, below-market rent commitment. A nightly rental breaks that. Expect to repay.
Waitlists and caps
Collingwood caps licences at 200 and Tiny at 300. Even if your unit qualifies, you may wait. Don’t count on that income in year one.
Not sure which rental model your lot can carry?
A 30-minute Talk to a Builder call ($149.99 + HST) walks through your town’s rules, your septic and what the suite should be built for. Credited toward any report, permit package or build.
Long-Term Rent Is Boring. Boring Pays the Mortgage.
Nightly rates look great on a spreadsheet. Then you subtract cleaning between every stay, the platform’s cut, a licence fee that runs from a few hundred dollars in the city to $1,750-$2,500 a year in Tiny and Collingwood, the 6% accommodation tax in Toronto, furnishing, extra insurance, and the empty weeks in March.
A long-term tenant on a 12-month lease, or a parent who would otherwise be in a retirement home at several thousand dollars a month, is a lot less exciting and a lot more reliable. It also keeps you on the right side of CMHC, the grant agreement and the CRA.
Our rule of thumb: design and finance the suite for long-term living. If your town later allows short-term rental in accessory units, that’s a bonus, not the business plan. Our rental income guide and ROI page run the long-term numbers.
Family use
No licence, no platform fee. Often the strongest case on a rural lot. See garden suites for aging parents.
12-month lease
Fits CMHC, grants and the HST rental rebate. Tenant law applies, so screen carefully.
Short-term (where legal)
Licence, inspections, accommodation tax, caps, insurance. Higher gross, higher risk.
Find out what your lot allows before you design for it
Our $399 + HST Garden Suite Feasibility Report checks your zoning, servicing and the rules that matter for how you plan to use the suite. Delivered in 48 hours and credited toward permit plans or the build.
Garden Suite Airbnb Questions
Can I rent my garden suite on Airbnb in Toronto?
Only if the garden suite is your own principal residence. Toronto’s rules say you can short-term rent a garden suite only if you are the principal resident of the suite. If you live in the main house, you cannot rent the suite short-term. Operators register with the City ($390 in 2026) and collect the 6% Municipal Accommodation Tax.
Can I Airbnb a coach house in Ottawa?
In the urban area, only if the coach house is exclusively and separately occupied as your own principal residence. In rural Ottawa outside villages, a coach house can be rented as a cottage rental under a separate permit, which costs $112 for two years. Short-term rentals are not permitted in agricultural subzones AG4 to AG8.
Which Ontario towns allow short-term rental of an additional residential unit?
Collingwood is a clear example: it has a Class C licence for additional residential units at $2,500 a year, capped at 200 licences town-wide. Many other towns either require it to be your principal residence or exclude accessory units, so check your own town’s licensing page before planning on it.
Can I Airbnb a garden suite in Tiny Township or The Blue Mountains?
Not a detached one. Tiny’s zoning by-law does not permit a short-term rental in any accessory building or structure, including a bunkie. The Blue Mountains says an additional residential unit is not permitted on a lot used for short-term accommodation.
Can I short-term rent a suite financed with the CMHC refinance?
No. CMHC’s secondary suite refinance terms say the suite cannot be rented for any period of less than 90 consecutive days. That covers Airbnb and 30 to 60 day furnished rentals. Family use or a long-term lease is what the program allows.
What happens with taxes if my short-term rental isn’t licensed?
Since January 1, 2024, the CRA denies expense deductions for a short-term rental of under 90 consecutive days that is in a location where short-term rentals are not permitted, or that does not meet local registration, licence and permit rules. You would pay tax on the gross rental income for the non-compliant days.
Is a 30-day rental a short-term rental?
It depends whose rule. Toronto counts under 28 days, Niagara-on-the-Lake 28 days or less, Mississauga 30 days, Wasaga Beach 30 days or less, Ottawa under 30 nights. CMHC and the CRA both use under 90 consecutive days. A 31-day stay can be legal under city rules and still break a CMHC mortgage condition.
Does a short-term rental affect my septic system?
It can. Full houses of guests put heavy, uneven loads on a septic bed. Tiny Township warns that exceeding occupancy may cause the septic system to malfunction. If the suite shares a system with the house, have the capacity checked by a septic designer such as SepticReplacement.ca before you rent.