How long does an ESA letter last?
Ask a leasing office and you will hear twelve months. Ask which law says so and nobody can tell you, because none does. This page explains the convention, who applies it strictly, and how to time a refresh so it never becomes a problem.
What this page settles
- Where the twelve-month expectation came from
- Which housing types enforce it hardest
- How far ahead of a renewal to start
- What to say when asked for something newer
Observed practice
What the market actually does
These are conventions, not legal limits. They describe how leasing offices behave, which is the thing that affects you.
12
The default window
Months of currency most management companies expect before asking for something newer.
6-8
Weeks of lead time
How far ahead of a lease renewal to start, so your file is not queued behind everyone else's.
0
Statutes setting an expiry
No federal or state law puts a lifespan on assistance animal documentation.
The gap between the last two columns is the whole subject of this page: a rule that binds nobody legally still governs what happens at the leasing desk.
Where the line is drawn
How different housing types behave
The same document meets very different standards depending on who is reading it.
| Who is reading it | What they typically expect |
|---|---|
| Large corporate management company | Twelve months applied strictly; often a portal field that rejects older dates outright |
| Independent landlord, few units | Frequently accepts an older letter if nothing has changed and the tenancy has run smoothly |
| University or campus housing | Annual, tied to the academic year, with deadlines that close well before term starts |
| Homeowners association or condo board | Varies enormously; some boards re-request every year, others never revisit an approved file |
| Subsidised or public housing | Documentation folded into the wider annual recertification, so the timing is set for you |
What 'current' means
Currency is about the assessment, not the paper
A letter is a record of a clinical judgement made on a particular day. What ages is not the ink but the judgement - the further you get from the assessment, the weaker the claim that it still describes your situation.
That framing helps in a conversation with a leasing office, because it moves the discussion off an arbitrary date and onto something defensible. If your circumstances are unchanged and the assessment was thorough, say so. If they have changed, a fresh review genuinely is the right answer.
It also explains why refreshing matters even when a landlord has not asked. Documentation that reflects your situation now is far easier to stand behind than documentation you are hoping nobody examines closely.
Work out your own date
Timing questions, by situation
Pick the row that matches your circumstances.
My lease renews on a fixed date each year
I am on a rolling month-to-month tenancy
I am about to move to a different state
My landlord has just asked for something newer
Nobody has asked me for anything in three years
The questions behind the search
Duration and renewal
| How long do ESA letters last? | Twelve months is what most leasing offices work to, and it has become the default expectation across the rental market. That figure is a convention rather than a rule, and where it came from is worth knowing. |
|---|---|
| Where does the one-year figure come from? | Annual review is how housing files are administered generally, and assistance animal paperwork got folded into that rhythm. Nobody legislated it. It stuck because it matched how leasing teams already worked. |
| Will a two-year-old letter be refused? | Frequently, yes, though the refusal is usually phrased as a request for something current rather than an outright no. Corporate management companies apply the twelve-month line more rigidly than individual owners. |
| Does the letter say an expiry date on it? | Sometimes, because clinicians know what leasing offices expect and write to that expectation. A date on the page is the clinician's statement about their assessment, not a countdown imposed from outside. |
| Does renewing mean starting over? | Not usually. Because the clinician already holds your background, the appointment runs briefer than the original did - though it remains a genuine review, capable of landing somewhere else entirely. |
| My lease renews in March. When should I refresh? | Six to eight weeks ahead. Leasing teams process accommodation paperwork alongside renewals, and arriving in the same week as everyone else's renewal is how people end up waiting. |
|---|---|
| Does the animal need re-assessing, or just me? | The assessment is about you and about whether the animal continues to address the need. If circumstances have changed materially, say so - a review that reflects reality is worth more than one that repeats last year's. |
| Can a landlord ask for a new letter every six months? | They can ask. Repeated demands at short intervals, particularly when nothing has changed, start to look like pressure rather than administration, and that pattern is worth documenting. |
| What if my condition is permanent? | Then say so, and ask the clinician to note it. Some housing providers accept a statement of ongoing need and stop asking annually. Others keep to the yearly cycle regardless, because their process cannot cope with exceptions. |
| Does moving reset the clock? | A new tenancy means a new request to a new decision-maker, and they will apply their own standard of currency. Time the paperwork around the move rather than assuming the old letter travels with you. |
Refresh before somebody asks.
A current assessment turns an awkward request into a formality. Begin with the no-cost screening and a clinician takes it from there.
