Is my ESA letter valid in Canada?

"Valid" is the wrong question, and that is not a dodge — it is the thing most sites get wrong.

If you are not certain which category your animal falls into, start here — the distinction between a service dog, an emotional support animal and a therapy dog decides almost everything that follows.

Canada has no ESA letter system. There is no register of valid letters, no approved format, and no body that validates one. So a letter is never "valid" or "invalid" in the abstract. It is either useful evidence in a particular situation, or it isn't.

Which situation matters enormously.

Short answers, by situation

Where a letter genuinely matters

Housing, at the application stage or in a condo. Across Canada, a landlord, condominium corporation or strata has a duty to accommodate a disability-related need for an animal, up to undue hardship — regardless of whether the animal is certified or trained.

In Hart v Condominium Corporation No. 831 0969, 2025 AHRC 52, an Alberta condo board refused an owner's informally trained dog. Her physician had written that she needed "an emotional support dog for medical reason." The Commission found discrimination and a failure of the procedural duty to accommodate, and ordered $15,000 plus a mandatory policy review.

That is the letter doing its job — not because it was "valid," but because it evidenced a disability and a disability-related need.

Saskatchewan sets out the test more clearly than anywhere else. Once medical evidence establishes necessity, "no pets" policies stop applying to that tenant and no extra damage deposit may be charged. You must establish three things: a disability; that the animal is necessary because of it; and that they would be at significant risk of an adverse health consequence in the absence of the animal. You need not disclose detailed medical history.

The Ontario situation, which is genuinely different

Ontario is the one province where an emotional support animal can meet the service animal definition — because O. Reg. 191/11 s.80.45(4) imposes no training or task requirement. A letter from a member of one of nine named regulated health colleges satisfies it.

But the list is closed. Social workers, veterinarians and out-of-province physicians are not on it. A letter from a US "ESA doctor" or an online counsellor who is not registered with an Ontario college does not satisfy the regulation — not because it is a bad letter, but because the writer is not on the list.

The Ontario housing trap

If you already rent in Ontario, you do not need a letter to keep your animal.

Residential Tenancies Act, 2006, s.14:

"A provision in a tenancy agreement prohibiting the presence of animals in or about the residential complex is void."

That applies to all animals. No disability, no letter, no documentation. It is the strongest pet protection in Canada and it is free.

Two carve-outs: it does not apply before you have the unit — a landlord may lawfully decline your application because you have a pet — and it does not apply to condominiums with a declaration prohibiting pets. Those two gaps are exactly where a letter and a human rights argument do the work.

Companies sell Ontario tenants letters they do not need.

Air travel

Emotional support animals are not covered by Canada's accessible transportation regulations. The Canadian Transportation Agency describes them as animals "not trained to perform a specific task" that "provide comfort and emotional support to persons with mental health-related disabilities."

A 2023 CTA decision requires accommodation of emotional support dogs only, under strict conditions: medical documentation from a physician, a veterinary certificate issued within two months submitted 96 hours before travel, and the dog in a carrier at your feet for the entire journey. No charge is permitted.

Practically: an emotional support cat has no right of carriage, and a dog too large for an under-seat carrier has no right of carriage.

What a letter that actually works looks like

There is no prescribed Canadian format, but every commission that addresses it wants the same substance:

• Written by a health care professional who knows you. This is the whole basis of it. A professional with no treating relationship has nothing to attest to.
• The right professional for your province. Ontario: one of the nine colleges. Newfoundland: physician, registered nurse, nurse practitioner or psychologist. New Brunswick: "a note from a doctor or a psychologist." Alberta and BC's service dog programs: a physician or nurse practitioner on the prescribed form.
• Confirms a disability — without necessarily naming a diagnosis. New Brunswick states you need not disclose one.
• Connects the animal to the need. Not "this person has a dog," but that the animal is required for reasons relating to the disability.
• Identifies the professional — name, profession, registration, contact, signature, date.

Signs the letter you bought will not help you

• The seller had never met you or spoken to you
• It arrived within 24 hours, or came with an approval guarantee
• The writer is not registered in your province
• It calls itself a "registration letter", a "reference letter", a "housing certificate" or comes from a lawyer rather than a clinician
• It claims to grant public access — nothing does that in Canada for an emotional support animal

What we do

We do not sell letters, and we will not. A letter that carries weight comes from a health care professional who knows you, and a registry that has never met you cannot write one — whatever it is called at checkout.

What we do is hold the letter your provider wrote, your veterinary records and your dog's details in one place, so that when a landlord or a condo board asks, you have it in front of you rather than somewhere in a drawer or an email archive. If you are applying for housing or living in a condominium with a no-pet declaration, that is the moment this matters.

Air travel is different, and we will not blur it: what a carrier wants is documentation from the organisation that trained the dog, and for an emotional support dog the physician and veterinary paperwork described above. A registry cannot supply either.

Last reviewed: 5 September 2026. This is legal information, not legal advice.