Quick answer. Under section 30(2) of the Alberta Residential Tenancies Act, a Calgary landlord can issue a 24-hour notice to terminate tenancy only in four circumstances: the tenant has caused significant damage to the rental premises, the tenant has physically assaulted the landlord or another person, the tenant has threatened physical assault, or the tenant has engaged in illegal activity at the premises (such as drug production, drug trafficking, or criminal harassment). Any other category of breach requires the standard 14-day notice. If the tenant does not vacate within 24 hours, the landlord must apply to RTDRS or the Court of King's Bench within 10 days, otherwise the tenancy remains in effect and the notice expires. This guide walks through each authorized ground, the drafting requirements, and the high evidence bar that 24-hour notices face at RTDRS.
The Four Authorized Grounds for a 24-Hour Notice
1. Significant damage to the premises
Significant damage means damage that materially impairs the value, function, or safety of the rental premises. Examples that meet the threshold: holes in walls beyond minor patching, intentional destruction of fixtures or appliances, damage to plumbing or electrical systems that requires immediate repair, fire damage from negligence, flooding from intentional or negligent acts. Examples that typically do not meet the threshold: minor scuffs, nail holes, light surface damage, ordinary wear and tear. The damage must be discovered and documented promptly; old damage that the landlord knew about for months is hard to characterize as the kind of urgent significant damage that justifies a 24-hour notice.
2. Physical assault by the tenant
Physical assault is direct physical contact intended to cause harm or apprehension of harm. Calgary courts and RTDRS hearing officers treat physical assault as a serious ground requiring concrete evidence: police reports, witness statements, medical records where available, photographs of injuries. Allegations alone are not sufficient. The assault must have been committed by the tenant or by a person whom the tenant permitted to be on the premises.
3. Threats of physical assault
A credible threat of physical violence against the landlord or another person at or near the premises is grounds for a 24-hour notice. The threat must be serious and specific, not casual or rhetorical. Documentation is critical: written threats (text messages, emails, letters), audio or video where lawfully recorded, witness statements, and police reports if charges were laid. Calgary RTDRS officers apply a contextual standard: a single heated argument is rarely sufficient; a pattern of escalating intimidation with specific threats often is.
4. Illegal activity at the premises
Illegal activity at the rental premises that justifies a 24-hour notice includes drug production (a cannabis or methamphetamine grow operation), drug trafficking, manufacturing of controlled substances, criminal harassment, or other indictable conduct that materially affects the safety or character of the premises. Personal cannabis consumption in a unit where the lease permits it is not illegal activity. The standard is criminal-code level conduct, not lifestyle disagreements.
What Is Not a Ground for a 24-Hour Notice
Many Calgary landlords incorrectly attempt 24-hour notices for situations that require a 14-day notice or a different process entirely:
- Non-payment of rent (always a 14-day notice).
- Repeated late payment (a 14-day notice based on substantial breach).
- Unauthorized pets (a 14-day notice based on lease breach).
- Noise complaints (a 14-day notice after documented warnings).
- Unauthorized occupants (a 14-day notice).
- Minor damage (a 14-day notice).
- Smoking in a non-smoking unit (a 14-day notice).
- End of fixed-term lease (an end-of-term notice).
- Personal use by the landlord (a 90-day notice in periodic tenancies).
Using a 24-hour notice for any of these categories produces an automatic loss at RTDRS. The hearing officer will set aside the notice and the tenant will remain in possession.
How to Draft a 24-Hour Notice
A 24-hour notice must contain the same core elements as a 14-day notice, with the timing adjusted and the citation updated. Required content:
- Heading: 'Notice of Termination of Tenancy on 24 Hours Notice'.
- Date and exact time of the notice.
- Tenant's full legal name (each tenant on the lease).
- Rental address.
- A specific factual description of the ground (significant damage, assault, threat, or illegal activity), with dates, times, and incident references.
- Citation: 'This notice is given pursuant to section 30(2) of the Residential Tenancies Act of Alberta.'
- Termination date and exact time, calculated as at least 24 hours after service.
- A statement that the tenant must vacate by the termination time.
- Landlord's full legal name, address for service, and signature, with date and time of signing.
Time matters. A notice served at 3:30 PM on Tuesday sets the termination at 3:30 PM Wednesday at the earliest. Both the service time and the termination time must be specific, and both must be documented.
How to Serve a 24-Hour Notice
Service methods are identical to the 14-day notice: personal delivery, leaving with an adult at the premises, posting in a conspicuous place, registered mail (deemed served after five days, which makes registered mail typically impractical for 24-hour notices), or electronic methods under the 2025 RTA amendments.
For 24-hour notices, the practical service stack is usually personal delivery or posting plus email. Photograph the posted notice with a timestamp visible. Send the PDF by email immediately and save the send confirmation. Where police have been involved, retain incident report numbers and request copies of officer notes when available.
The Critical 10-Day Filing Window
If the tenant does not vacate within 24 hours of service, the landlord must apply to RTDRS or the Court of King's Bench within 10 days of the termination time. If no application is filed within 10 days, the tenancy stays in place and the 24-hour notice is no longer effective. The 10-day window is unforgiving. Calgary landlords who serve a notice and then wait two weeks to file lose the matter on procedural grounds even when the underlying conduct fully justified the notice.
Practical sequence: serve the notice, document service, prepare the RTDRS application and evidence package immediately, and file within 48 to 72 hours of the termination time if the tenant has not vacated. Do not wait until day 9 of the 10-day window. Hearings are scheduled within one to three weeks of filing in most cases, faster than 14-day notice hearings because of the urgency tag on serious-conduct files.
Surviving the RTDRS Hearing
Hearing officers apply a higher evidence threshold to 24-hour notices than to 14-day notices, because the consequence (immediate displacement of the tenant) is severe. Bring police incident report numbers, witness statements, dated photographs of damage, repair estimates or invoices, and any criminal charges that have been laid. For threats and assaults, contemporaneous documentation (texts saved in their original format, voicemails preserved, written witness statements) carries far more weight than recollections offered at the hearing.
Calm chronological presentation matters even more here. Describe the incident factually, with dates and times. Avoid editorializing about the tenant's character. Let the documentation speak. A successful 24-hour notice hearing typically establishes that the conduct was serious, that the documentation is contemporaneous and credible, and that the landlord acted promptly and within the procedural rules.
Tenant Safety and the Police Decision
Cases involving physical assault or threats of assault create an immediate safety issue that the legal process is not designed to address. Calgary landlords facing a credibly threatening tenant should make safety decisions independent of the eviction strategy.
If the threat is immediate, call 911. If the threat is ongoing but not in the moment, file a police report with the Calgary Police Service non-emergency line and obtain an incident report number. Even when criminal charges are not laid, the police record creates an independent contemporaneous source that materially strengthens a 24-hour notice file. For threats by text, email, or recorded voicemail, preserve the originals before any phone or account changes risk losing them.
Where a tenant has threatened the landlord personally, consider having a third party complete the move-out inspection (a RECA-licensed property manager, a contractor, or an off-duty officer). Personal safety is not negotiable; the legal process can wait long enough to arrange a safe site visit.
Distinguishing a 24-Hour Notice from Other Urgent Remedies
Calgary landlords sometimes confuse a 24-hour notice with two adjacent remedies. They are different tools with different applications.
- Emergency entry without notice. Section 23 of the RTA permits landlord entry without the standard 24-hour written notice in genuine emergencies (active fire, flood, gas leak, urgent repair to prevent imminent damage). This is about entering the unit, not about ending the tenancy.
- Application for a court order without going through RTDRS. For extreme situations where waiting for RTDRS scheduling is itself a risk, landlords can apply directly to the Court of King's Bench for an emergency order. This is faster but more expensive and procedurally heavier than RTDRS.
- Calling police for an active crime. Police can respond to an active crime in progress, but the police themselves cannot evict a tenant. The eviction must still come through the RTDRS or court process. Police involvement supports the file rather than substituting for it.
Knowing which remedy fits which situation prevents two common Calgary landlord mistakes: relying on police to remove a tenant they cannot lawfully remove, and using a 24-hour notice for situations that actually need an emergency court application.
What Happens After You Win
If the order issues and the tenant has not vacated, file the order with the Court of King's Bench, obtain a writ of possession, and have the Civil Enforcement Office schedule a sheriff's eviction. The timeline from order to sheriff enforcement is typically two to four weeks. If the tenant has already vacated by the time the order issues, conduct the move-out inspection within one week, secure the property (including changing locks), and apply the security deposit against unpaid rent and damages with an itemized statement within 10 days.
Frequently Asked Questions
Is a 24-hour eviction notice legal in Alberta?
Yes, in narrow circumstances. Section 30(2) of the RTA authorizes 24-hour notices only for significant damage, physical assault, threats of assault, or illegal activity at the premises. Any other ground requires a 14-day notice or a different notice type.
Can a 24-hour notice be used for unpaid rent?
No. Non-payment of rent is a substantial breach that requires a 14-day notice under section 30. A 24-hour notice issued for non-payment is void.
What if the tenant denies the threat or assault?
RTDRS will weigh the evidence on both sides. Police reports, medical records, contemporaneous witness statements, and preserved electronic communications strongly favour the landlord. Bare assertions on either side carry little weight. The party with better contemporaneous documentation typically wins.
Do I have to involve the police before issuing a 24-hour notice?
No, but police involvement strengthens the evidence chain significantly. An incident report number, witness officer notes, and any criminal charges all corroborate the landlord's account. For physical assault or serious threats, contact police promptly both for safety reasons and for documentation.
Can I change the locks immediately after serving a 24-hour notice?
No. Self-help eviction is illegal in Alberta even after a 24-hour notice. The lawful path is service of the notice, application to RTDRS within 10 days if the tenant does not vacate, the hearing, the order, the writ of possession, and sheriff-enforced removal. Locking the tenant out without that chain exposes the landlord to tenant counterclaims that often exceed the underlying claim.
What does significant damage mean for a 24-hour notice?
Significant damage materially impairs the value, function, or safety of the premises. Examples: large holes in walls or doors, intentional destruction of fixtures, damage to plumbing or electrical systems, fire damage from negligence, flooding from intentional or negligent acts. Minor cosmetic damage does not qualify and should be addressed through a 14-day notice or end-of-tenancy deposit deduction.
What if the 10-day filing window has passed?
The 24-hour notice expires and the tenancy remains in place. The landlord can issue a new notice if the conduct repeats or escalates, but the original notice is no longer enforceable. The lesson: file promptly, ideally within 72 hours of the termination time.
Are 24-hour notices common in Calgary?
Relatively uncommon. The vast majority of Calgary evictions proceed through 14-day notices for non-payment or substantial breach. 24-hour notices are used in a small percentage of cases involving serious conduct, and the evidence bar at RTDRS reflects that severity.
Bottom Line
The 24-hour notice is a powerful tool reserved for narrow grounds: significant damage, physical assault, threats of assault, and illegal activity. Using it correctly requires precise drafting, prompt dual-method service, and immediate filing at RTDRS within the 10-day window if the tenant does not vacate. The evidence bar at the hearing is high, and contemporaneous documentation including police reports and preserved electronic communications carries the day. For serious-conduct situations that meet the section 30(2) threshold, the 24-hour notice is the fastest legal path to ending a tenancy. For everything else, the 14-day notice is the correct tool.