Quick answer (corrected). A guarantor (also called a cosigner) is a third party who signs a written guarantee promising to be liable for the tenant's obligations if the tenant fails to pay rent, damages the property, or otherwise breaches the lease. Important legal reality: Alberta's Residential Tenancies Act does NOT specifically address guarantors or cosigners. Guarantor liability on residential leases is governed by Alberta common-law contract principles (offer, acceptance, consideration) and the Statute of Frauds (which requires the guarantee to be in writing and signed by the guarantor to be enforceable). A separate consequence: the Residential Tenancy Dispute Resolution Service (RTDRS) does NOT have jurisdiction over guarantor claims. Enforcement against the tenant proceeds through RTDRS (rent, damages, possession). Enforcement against the guarantor is a separate contract-law action in the Alberta Court of Justice (small claims, up to $100,000) or the Court of King's Bench (higher amounts). This procedural split is often surprising to landlords who assumed the guarantor would be dealt with in the same hearing as the tenant. Common Alberta uses: students without established income or credit, new immigrants without Canadian rental history, tenants with recovering credit, and tenants whose income falls short of the landlord's threshold but who have creditworthy family or friends willing to guarantee.
When to Require a Guarantor
- Student tenant with limited or no employment income. A parent guarantor is standard for university-area rentals.
- New immigrant with a stable income but no Canadian credit history that the landlord can verify.
- Tenant with a credit score below the landlord's threshold but otherwise qualified (stable employment, positive rental history, good references). A guarantor with strong credit can substitute for the tenant's weak credit.
- Tenant with recent bankruptcy or consumer proposal, especially if the tenancy start date falls within the credit-recovery window.
- Tenant whose stable income falls modestly below the landlord's income-to-rent threshold (e.g., 2.5x rent instead of 3.0x), and where a guarantor's income can fill the gap.
- First-time renter with no prior rental history and no employment history, particularly under age 25.
Guarantor Qualification: What to Screen For
A guarantor is only useful if collectible. Screen the guarantor as rigorously as (or more rigorously than) the primary tenant:
- Credit score meeting or exceeding your standard threshold (typically 700+ for a solid guarantor).
- Stable employment income at least 3x the monthly rent, ideally 4x or higher.
- Home ownership or other significant assets (increases collectibility of any judgment).
- Canadian resident with a stable address (out-of-country guarantors are difficult to enforce against).
- No history of debt-avoidance or judgment defaults.
- Full understanding of what they are signing (a guarantor who does not appreciate the commitment is likely to challenge the guarantee if enforcement becomes necessary).
The Written Guarantee: What It Must Include
For a guarantee of a residential lease to be enforceable in Alberta, it must satisfy the Statute of Frauds (writing and signature) and the general requirements of contract formation (clear language, consideration, capacity). Practical elements:
- In writing (verbal guarantees are not enforceable under the Statute of Frauds).
- Signed by the guarantor (an original wet-ink signature is safest for enforceability; e-signatures are generally acceptable if the guarantor's identity is authenticated and the document is dated).
- Full names and contact information of the tenant, the guarantor, and the landlord.
- The property address subject to the lease being guaranteed.
- The specific term of the lease being guaranteed (start date, end date, monthly rent amount).
- Clear, unambiguous language of guarantee: 'The undersigned guarantor guarantees full performance of all obligations of the tenant under the lease, including payment of rent, payment for damage, and any other financial obligation arising under the lease.'
- A statement addressing the guarantee's duration: does it survive lease renewals automatically, does it terminate at the end of the fixed term, does it require re-signing at renewal? Ambiguity here is a common enforcement problem.
- Consideration for the guarantee (typically, the landlord's agreement to lease to the tenant is sufficient consideration when the guarantee is signed at the same time as the lease).
- Recommendation for the guarantor to obtain independent legal advice before signing (protects against later 'I didn't understand what I was signing' arguments).
Sample Guarantor Clause
The following clause can be adapted as a lease addendum:\n\n'The undersigned, [Guarantor full name], residing at [Guarantor address], hereby unconditionally guarantees to the landlord, [Landlord name], the full and prompt performance of all obligations of the tenant, [Tenant full name(s)], under the residential lease dated [lease date] for the premises at [property address], including but not limited to payment of monthly rent, payment of any charges and fees permitted by the Residential Tenancies Act, and payment for damages caused by or during the tenant's occupancy. This guarantee is a continuing guarantee that remains in effect for the term of the lease and any renewals. The guarantor may terminate this guarantee prospectively (as to obligations arising after termination) by giving the landlord 90 days' written notice; the guarantor remains liable for all obligations arising before the termination effective date. The guarantor acknowledges receiving a copy of the lease and understanding the extent of the obligations guaranteed.\n\n_______________________\n[Guarantor signature]\n[Date]\n\nWitness: _______________________'
How Enforcement Actually Works (Critical: Split Between RTDRS and Court)
This is where landlord expectations often diverge from reality. Because the RTA does not address guarantors and RTDRS has no jurisdiction over guarantor claims, enforcement runs on two separate tracks:
Track 1: Against the Tenant (via RTDRS)
Standard RTDRS process for possession, unpaid rent, damages, and other RTA-based remedies. The tenant is the RTDRS respondent. The RTDRS order is against the tenant only, not the guarantor. See our full RTDRS guide at /blog/how-to-evict-tenant-alberta-rtdrs-timeline.
Track 2: Against the Guarantor (via Court of Justice or Court of King's Bench)
A separate civil contract action is required to obtain a judgment against the guarantor. Options:
- Alberta Court of Justice (formerly Provincial Court, small claims division) for amounts up to $100,000. Lower filing fees, simpler procedure, self-representable in many cases.
- Court of King's Bench for amounts exceeding $100,000 or where injunctive relief is needed.
- Written demand to the guarantor demanding payment within 30 days as a pre-litigation step (sometimes results in voluntary payment without any court action).
The tenant judgment from RTDRS can be relied on as evidence of the underlying default in the guarantor action, but it is NOT automatically enforceable against the guarantor. A separate court action is required. This is a common landlord surprise and adds meaningful cost and time to enforcement. Once a court judgment against the guarantor is obtained, collection follows standard civil enforcement: wage garnishment, bank account garnishment, registration against real estate they own, or seizure of personal property in extreme cases. A solid guarantor with employment and assets typically pays the judgment; a guarantor without steady employment or seizable assets is often functionally uncollectible even with a valid judgment.
Common Landlord Mistakes with Guarantors
- Not obtaining an original signature. Photocopies and unsigned electronic PDFs are much harder to enforce.
- Guaranteeing an oral lease. Guarantees for tenancies without a written lease document are technically enforceable but much harder to defend.
- Failing to screen the guarantor. A guarantor who is not creditworthy is not really a guarantor.
- Accepting a friend or family member as guarantor without asking about their financial position.
- Not renewing or reconfirming the guarantee at lease renewal. Some guarantees end at the end of the fixed term; without a renewed guarantee, the landlord may lose protection.
- Not obtaining the guarantor's current address annually. Guarantors move; without updated contact information, service is difficult.
The Guarantor's Position
For a person considering being a guarantor: this is a significant financial commitment. If the tenant fails, you are on the hook for potentially months of rent, damages, legal fees, and enforcement costs. Before signing, understand: the maximum potential exposure (typically annual rent plus one month's worth of damages plus legal fees, so easily $30,000 to $60,000 on a Calgary rental); the length of exposure (full term of lease, potentially plus renewals); the difficulty of getting out (most guarantees survive until the lease ends or renewal signing); the impact on your own credit if a judgment is entered against you. A guarantor should be someone who genuinely can and will pay if called upon, not someone who is signing as a favour with the expectation it will never come up.
Frequently Asked Questions
Can a landlord refuse a tenant unless they provide a guarantor?
Yes, provided the requirement is applied consistently to applicants meeting the same profile (e.g., all students without stable income, or all applicants below a certain credit threshold). Requiring a guarantor from tenants of a specific race, religion, or family status while not requiring one from others is discrimination.
Does the guarantor need to be an Alberta resident?
Legally, no. Practically, enforceability against a non-Alberta guarantor is significantly more difficult. Alberta residents are strongly preferred.
Can a parent guarantee a student's lease?
Yes. This is one of the most common uses of a guarantee. The parent (or other family member) signs as guarantor and is liable if the student defaults.
Does the guarantor sign the lease itself?
Typically the guarantor signs a separate guarantee document that references the lease. Some landlords have the guarantor also sign the lease document itself as an additional signatory. Either works legally; the separate guarantee is cleaner.
Does UrbanLease process guarantor arrangements?
Yes. Where a guarantor is appropriate for a specific tenant profile, UrbanLease drafts the guarantee, screens the guarantor to the same criteria applied to primary tenants, and manages enforcement if a default arises. Property management services provided by Chabi.ca, a RECA-licensed Alberta brokerage.
Bottom Line
Guarantors are a legitimate tool for extending Alberta rentals to tenants who fall short of standard qualification but whose primary risk factor is credit or income. Two critical points landlords often miss: (1) the RTA does not address guarantors — Alberta common-law contract principles govern; and (2) RTDRS has no jurisdiction over guarantors, so enforcement against the guarantor requires a separate action in the Alberta Court of Justice or Court of King's Bench. The value of a guarantor is directly proportional to the guarantor's own creditworthiness and asset position; screen accordingly. The written guarantee must satisfy the Statute of Frauds (writing + signature) and use clear unambiguous language. UrbanLease handles guarantor arrangements as part of the tenant placement workflow under Chabi.ca.
Reviewed 2026-08-02. General information only, not legal advice. Verify current provisions with the Alberta Residential Tenancies Act, Service Alberta's Consumer Contact Centre, or an Alberta lawyer before drafting a guarantee or pursuing enforcement.