St. Catharines is the largest city in the Niagara Region, home to Brock University and positioned between Toronto and Niagara Falls. STR demand comes from visiting parents, wine country tourists, and travelers using it as a Niagara base.
The City regulates STRs under a principal-residence licensing bylaw with a demerit point system, mandatory electrical safety certificate, $2M insurance, and a 4% municipal accommodation tax. The City has collected nearly half a million dollars in fines since enforcement started. Here's where things stand in 2026.
Current Rules: Where St. Catharines Stands Today
The short version, so you can decide in 30 seconds whether your property qualifies:
If you live in your St. Catharines home at least 183 days per year, you can host. If the property is an investment unit, a cottage, or a vacation home, the STR path is closed and the 29+ day mid-term route is the only legal option.
What Counts as a Short-Term Rental?
St. Catharines uses a 28-day threshold:
"Short-term rental means the use of a dwelling unit, or portion thereof, for temporary accommodation for a period of twenty-eight (28) consecutive days or less, in exchange for payment." St. Catharines By-law 2023-060 § Definitions
Key elements:
- 28 days or less - rentals of 29+ days aren't STRs
- In exchange for payment - free stays aren't regulated
- Whole unit or portion - covers both entire-home and room rentals
- Temporary accommodation - transient guests, not tenants
The Principal Residence Requirement
St. Catharines defines principal residence with specific criteria:
"Principal residence means the dwelling unit where a person resides for at least one hundred and eighty-three (183) days per calendar year." St. Catharines By-law 2023-060 § Definitions
The 183-day rule means:
- Must be your primary home - where you live most of the year
- 183 days = just over half the year - clear, measurable standard
- One principal residence per person - can't claim multiple
- Investment properties excluded - secondary properties don't qualify
Investment Properties Don't Qualify
You cannot operate an STR from an investment property, vacation home, or any dwelling that isn't your principal residence (183+ days/year). For investment properties in St. Catharines, consider mid-term rentals of 29+ consecutive days.
License Requirements
St. Catharines requires licensing for all STR operators:
Application Requirements
- Proof of principal residence (183+ days/year)
- Electrical safety certificate from licensed contractor
- $2,000,000 liability insurance
- Designated agent within 1-hour response time
- Floor plan showing rental areas
- Fire safety compliance documentation
License Terms
The Demerit Point System
St. Catharines uses a graduated enforcement system:
"A licensee who accumulates five (5) demerit points shall have their licence suspended for three (3) months. Ten (10) points results in revocation. Fifteen (15) points results in revocation with no right of appeal." St. Catharines By-law 2023-060
Different violations carry different point values:
- Minor violations (documentation issues): 1-2 points
- Moderate violations (noise, parking): 2-3 points
- Serious violations (safety issues, overcrowding): 4-5 points
The escalating consequences mean:
- 2-3 moderate violations = suspension
- 4-5 moderate violations = revocation
- Points don't reset - they accumulate over time
Electrical Certificate Requirement
St. Catharines has a unique electrical safety requirement:
"An electrical safety certificate issued by a licensed electrical contractor shall be submitted with the application." St. Catharines By-law 2023-060
This requirement:
- Must be from a licensed electrical contractor - not a home inspector
- Required for initial application
- Verifies electrical safety of the rental property
- Separate from ESA inspection - different from Electrical Safety Authority
Insurance Requirements
St. Catharines requires standard STR insurance coverage:
"The licensee shall maintain liability insurance of no less than two million dollars ($2,000,000) covering the short-term rental operation." St. Catharines By-law 2023-060
Key requirements:
- $2,000,000 minimum liability per occurrence
- Must specifically cover STR operations
- Certificate required with application
- Maintain continuously - gaps violate the license
Municipal Accommodation Tax (MAT)
St. Catharines charges 4% MAT as of January 1, 2025 (increased from the initial 2% rate that applied January 1, 2023 through December 31, 2024):
For most hosts using Airbnb, the 4% is collected automatically. For direct bookings, you're responsible for collecting from guests and remitting to the City.
Enforcement Reality: What's Actually Happening
The bylaw isn't theoretical. The City has been actively enforcing it through a data-sharing arrangement with Airbnb and Vrbo, which lets bylaw officers identify unlicensed listings by address.
The numbers, drawn from FOI documents reported by The Pointer in July 2024:
What Drives Niagara Demand
Understanding the demand calendar matters because the principal-residence rule effectively locks you into seasonal patterns built around your own life. Here's what fills nights in St. Catharines:
Brock University milestones
Brock has roughly 19,000 students and three convocations a year (June, October, fall winter). Convocation weekends, residence move-in days, parents weekend, and homecoming all push parent demand into hotels and STRs. The Holiday Inn & Suites Conference Centre, Brock's official partner hotel, holds rooms around $230 per night plus tax for alumni and convocation guests, which sets a useful price reference for nearby STR hosts.
Niagara wine country tourism
St. Catharines sits at the north end of the Twenty Valley and is a 15-minute drive from the Beamsville Bench and the heart of Niagara-on-the-Lake's wine route. Wine tour groups regularly base in St. Catharines because parking, restaurants, and Uber availability are easier than in NOTL itself. Demand peaks during ice wine season (January), spring grape blossom, summer weekends, and harvest (September to October).
Major events
- Royal Canadian Henley Regatta (early August at Henley Island), one of the largest rowing regattas in North America
- FirstOntario Performing Arts Centre shows downtown
- Meridian Centre Niagara IceDogs (OHL) home games, October through March
- Niagara Grape and Wine Festival (September)
Spillover from Niagara Falls
When Niagara Falls inventory tightens or prices spike (Fireworks Festival, New Year's Eve, summer long weekends), travellers shop St. Catharines as a cheaper base. A 15 to 20 minute drive south puts them on Clifton Hill at roughly two-thirds the nightly cost. Position your listing's title and photos for "Niagara base" intent, not just St. Catharines proper.
Mid-Term Rentals: The Investment Property Path
The bylaw only governs stays of 28 consecutive days or less. Rent in 29+ day blocks and the STR licensing regime does not apply, no demerit system, no electrical certificate, no 1-hour agent rule, no MAT.
For St. Catharines investment owners, this is the path that actually works at scale. The realistic mid-term tenant pool in this market:
- Visiting Brock faculty and sabbatical researchers on one or two-term contracts
- Travel nurses placed at Niagara Health (St. Catharines, Welland, Niagara Falls hospital sites) on 13 week assignments
- Insurance displacement housing for residents whose homes are uninhabitable after a fire, flood, or major reno (ALE Solutions, CRS, On Side)
- Niagara Region corporate relocations, especially General Motors St. Catharines Powertrain hires
- Film and TV production crews shooting in the Niagara Region
Ontario tenancy risk on stays over 90 days
If you rent past roughly the 30 to 90 day window, your guest can argue Residential Tenancies Act protection applies, meaning you can't simply ask them to leave when their term ends. Use a written occupancy agreement, set a clear end date, and talk to a lawyer if you're building a paid mid-term lease-up service line (that step itself may trigger RECO licensing rules under TRESA).
Fines and Penalties
Beyond the demerit system, St. Catharines has monetary penalties:
Staying Compliant in St. Catharines
With the demerit system, every violation counts. Here's how to stay compliant:
- Get your electrical certificate first. This requirement catches many hosts off-guard. Schedule a licensed electrical contractor before starting your application.
- Track your demerit points. Know where you stand at all times. Keep records of any violations or warnings. Two moderate violations can trigger a suspension.
- Set up 1-hour response capability. Designate an agent who can actually respond within 1 hour. Don't name someone who might be unavailable when needed.
- Document your principal residence. Keep records proving you live at the property 183+ days per year - utility bills, tax filings, driver's license.
- Prevent noise violations. Noise complaints accumulate demerit points quickly. Set clear quiet hours and communicate them to every guest.
- Maintain your insurance. An insurance lapse can trigger violations. Set up auto-renewal and calendar reminders.
- Remember the 2-year renewal. St. Catharines has shorter license terms than some cities. Mark your renewal date and start the process early.
- Consider mid-term for flexibility. 29+ day bookings aren't STRs. Use this for longer stays or during slower seasons.
Official City of St. Catharines Resources
Always verify current rules with official sources:
Official Links
Common Questions From St. Catharines Hosts
Can I Airbnb my investment property in St. Catharines?
No. St. Catharines requires STRs to be in your principal residence - where you live at least 183 days per year. Investment properties don't qualify. For investment properties, consider mid-term rentals (29+ days) which fall outside the STR definition.
How does the demerit point system work?
You accumulate points for violations. At 5 points, your license is suspended for 3 months. At 10 points, it's revoked. At 15 points, it's revoked with no right to appeal. Points remain on your record for 2 years from the date of violation.
How long is the license valid?
2 years - one of the shorter terms in Ontario. You'll need to renew more frequently than in some other municipalities. Mark your calendar and start renewal well before expiration.
What insurance do I need?
$2,000,000 liability insurance minimum that specifically covers short-term rental operations. Standard homeowner's insurance won't work - you need specialized STR coverage or an endorsement.
Do I need an electrical inspection?
Yes. St. Catharines requires an electrical safety certificate from a licensed electrical contractor for your STR application. This is an extra requirement not all municipalities have.
How quickly must I respond to issues?
You or your designated agent must be able to attend the property within 1 hour if needed. You must designate someone who can meet this response time requirement.
What is the current St. Catharines MAT rate and how is it paid?
4% per night, effective January 1, 2025 (increased from 2% which applied from January 1, 2023 through December 31, 2024). The MAT applies to stays of 30 days or less at hotels, motels, B&Bs, and short-term rentals. Accommodation providers must collect MAT from guests and remit using the City's Remittance Form. The City of St. Catharines does not publicly confirm whether Airbnb auto-collects and remits the 4% MAT on its behalf, so host should verify directly with Airbnb's platform settings or contact the City's Finance Department at 905-688-5600 to confirm. For direct bookings (not through platforms), hosts must collect and remit the 4% themselves.
Can I rent rooms in my principal residence?
Yes. As long as it's your principal residence (183+ days per year), you can rent the whole home when you're away or rent individual rooms. Both require a license.
How much does the licence cost in 2026?
The City of St. Catharines lists the STR application fee at $534.05 as of 2026. The licence is valid for 2 years, then renews. Budget separately for $2M liability insurance, the licensed electrical contractor's certificate, and any required safety upgrades.
Is enforcement actually paused?
Only proactive enforcement is paused. Council put a hold on staff trawling Airbnb listings to issue penalties pre-emptively in July 2024. Complaint-driven enforcement continues, so a single neighbour call can still trigger an inspection and the full fine schedule, $1,000 to $10,000 per violation. Treat the pause as a softer landing, not an amnesty.
What if my property is an investment, not my principal residence?
You cannot operate it as an STR in St. Catharines. The legal path is mid-term rentals of 29 consecutive days or longer, which fall outside the STR bylaw. Realistic tenants in this market include visiting Brock faculty, travel nurses at Niagara Health, insurance displacement housing, and corporate relocations. Use a written occupancy agreement and watch the 90-day mark for Residential Tenancies Act exposure.
This article is for informational purposes only and does not constitute legal advice. Bylaw and regulation details change frequently. Always verify current rules directly with your local municipality before making hosting decisions.
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