Does an ESA Letter Expire? The "1-Year Rule" Is a Myth

If you've ever been told your ESA letter "expired" and you need a new one, you've encountered one of the most profitable myths in the rental housing industry.

The "12-month rule" — the claim that ESA letters automatically expire after one year and must be renewed annually — has no basis in federal law. It does not appear in the Fair Housing Act. It does not appear in HUD Guidance FHEO-2020-01. It does not appear in any federal statute or regulation governing housing accommodation for people with disabilities.

It was invented by the property management and pet screening industry to generate repeat revenue.

What the Fair Housing Act Actually Says About Documentation

The Fair Housing Act requires tenants to provide documentation that reliably establishes two things:

1. That they have a disability
2. That they have a disability-related need for the assistance animal

The statute says nothing about documentation expiring. HUD Guidance FHEO-2020-01 — the definitive federal guidance on assistance animals — says nothing about annual renewal requirements. There is no "12 months" anywhere in federal fair housing law.

Where the Myth Comes From

The 12-month rule was propagated primarily by the pet screening industry — companies like PetScreening that process ESA verifications for property managers.

These platforms built annual renewal requirements into their software as a default. Property managers, trusting that the platform was compliant, adopted the rule. It spread through property management companies, HOA boards, and apartment complexes as if it were law.

The business logic is transparent: annual renewals mean annual fees. If PetScreening or a similar platform charges $20–$30 per ESA screening, and they can require annual re-screening for millions of tenants, the revenue multiplies accordingly.

PetScreening's own 2026 marketing materials refer to a "12-month industry standard" for ESA letter freshness — not a legal requirement. They're correct that it's an industry standard. They're deceptive in implying it has legal force.

What Landlords Can Legitimately Request

Landlords are not entirely without rights here. HUD guidance acknowledges that the reliability of documentation can be questioned in some circumstances — particularly if:

• The disability is episodic and the landlord has reason to believe the tenant's condition may have changed significantly
• The documentation is very old (years, not months) and circumstances have materially changed
• The original documentation appeared unreliable

Even in these cases, the landlord must have a specific, articulable reason to question the documentation — not just a blanket "it's been 12 months" policy. An annual renewal requirement applied uniformly to all ESA tenants, regardless of individual circumstances, is not legally justified under FHA standards.

Can a Landlord Require Annual Renewal?

This is where the law isn't perfectly settled. Some landlords argue they can require updated documentation as part of their reasonable verification rights. Fair housing advocates argue blanket annual renewal requirements are impermissible additional conditions on the accommodation.

The stronger legal position is that a blanket 12-month renewal rule is an impermissible condition — particularly when it comes with a fee requirement. HUD guidance on fees is unambiguous: landlords cannot charge fees as part of the accommodation process, including renewal fees.

If you're asked to renew annually and there's a fee attached — that fee is an FHA violation regardless of whether the renewal itself is permissible.

What to Do If Your Landlord Claims Your Letter Expired

1. Ask for the legal basis in writing. What statute, HUD guidance, or regulation requires annual renewal? They will not be able to cite one.
2. Respond in writing that the Fair Housing Act and HUD FHEO-2020-01 contain no annual renewal requirement, and that you consider your existing accommodation to remain in force.
3. If they're charging a fee for renewal — that's an FHA violation. Demand a refund. File a HUD complaint.
4. If they threaten adverse action based on your "expired" letter — file a HUD complaint for failure to accommodate.

Tenant Pet Rights publishes free legal information for renters with assistance animals. We are not a law firm and this is not legal advice.