In most states your landlord's deadline runs from move-out whether or not you send one. But in a substantial minority a written forwarding address does real work — starting the clock, protecting your right to a penalty, or triggering the obligation at all. Sending one costs nothing and closes off a common landlord defence.
Why does a forwarding address matter at all?
Because it removes an excuse.
"I had nowhere to send it" is the most common answer a landlord gives when asked why the deposit never arrived. In states where the law says the clock runs from move-out regardless, that answer is worth nothing. In others, it is a real defence — and the difference is not something most renters know about their own state.
What are the different rules?
Broadly four patterns.
The address is irrelevant to timing, which is the majority position. The deadline runs from move-out or the end of the tenancy either way. Sending an address is still useful, because it removes the practical excuse, but it does not change the legal clock.
The address moves the deadline. The clock starts when you provide it, or the deadline is the later of move-out and the address arriving. Here, not sending one can mean the deadline never starts and the landlord is never late.
The address gates a remedy. The deposit obligation stands either way, but your access to a penalty or to the stronger consequences depends on having given written notice of where to send the money. Pennsylvania is the clearest example: the strong forfeiture rule there applies only where the tenant gave a written forwarding address.
Nothing happens until you demand it. In a few states there is no automatic clock at all: the landlord's obligation is triggered by a written demand from you, which means waiting quietly is the one thing that guarantees nothing.
What if I already moved out and never sent one?
Send it now, in writing.
If your state is one where the address starts the clock, sending it today starts it today — which is better than a clock that never started. If your state is one where it gates a remedy, sending it may still preserve arguments you would otherwise lose. And if it changes nothing legally where you rented, it costs you a stamp and removes the excuse.
There is very little downside and, depending on where you rented, a large upside.
What should the notice actually contain?
Keep it simple and provable.
- Your full name and the address of the property you rented
- The date you moved out
- Your new address for the deposit and any correspondence
- The date you are sending it
Send it in a way that creates a record. Certified mail with return receipt is the strongest; email is better than a phone call. What matters is that later you can show what you sent and when.
Does a text message count?
Sometimes, but do not rely on it.
Several states require the notice in writing, and some specify how. A text may satisfy "in writing" in one state and not in another, and a phone call almost never does. If the address is doing legal work where you rented, you want the version that is hardest to argue about.
How does this interact with the deadline?
Directly, and it is the most common source of confusion about deposit deadlines.
A renter counts 30 days from move-out, sees the deadline pass, and assumes the landlord is in breach — when in their state the clock had not started because no address was ever provided. Or the reverse: a landlord claims they were waiting for an address in a state where the law says the clock ran from move-out regardless.
Working out which applies to you means knowing your state's rule, when you moved out, whether you sent anything and in what form. Those four facts together decide whether a deadline was actually missed.
SecurityDeposit.co asks those questions and applies your state's rule, then produces a demand letter that states the deadline correctly for your situation — including, where it matters, the notice you gave. Getting this wrong in a letter is worth avoiding: a demand built on a deadline that never started is easy for a landlord to dismiss.
Frequently asked questions
Is a forwarding address legally required? Generally you are not obliged to provide one, but in some states failing to do so means the landlord's deadline never starts or a remedy is unavailable to you.
I gave it verbally when I returned the keys. Is that enough? Often not. Where the address does legal work, states typically require it in writing. Send a written version now even if you told them at the time.
Can I use a friend's address or a PO box? Usually yes — it is a place to send mail, not proof of residence. Make sure you will actually receive what arrives there.
What if my landlord already has my new address? Send it formally anyway. The question is not whether they know it but whether you can show you provided it.
Does sending an address restart a deadline that already passed? No. If the clock already ran from move-out in your state, it ran. Sending the address matters where the clock had not started or where a remedy was gated on it.
Should I send it by certified mail? It is the strongest option because it proves delivery. Where the address gates a remedy, that proof is the point.
Last reviewed: 30 August 2026. Whether a forwarding address affects your deadline is state-specific and changes; check your state's current statute before relying on either answer.
Sources. Whether a forwarding address affects the deadline is set by each state's deposit statute — linked per state in the state table. 68 Pa. Stat. § 250.512(e) is the clearest example of a remedy that depends on written notice of the address.
SecurityDeposit.co works out which deadline actually applied and writes the demand that follows from it.