The short answer
A security deposit demand letter asks your former landlord, in writing, to return your deposit by a set date after the state deadline has passed. Include the rental address, move-out date, deposit amount, the deadline rule, any disputed deductions, and your forwarding address. Send it by Certified Mail and keep copies in case you go to small claims court.
What is a security deposit demand letter?
A security deposit demand letter is a written request from a former tenant asking the landlord to return a deposit, or the part of it that was kept, by a specific date. It’s also called a security deposit return letter or a letter to the landlord for security deposit return. The tone is firm and factual, not angry: you’re putting the facts, the amount, and the legal deadline on paper so the landlord has a clear chance to pay.
The letter also does a second job. If the landlord doesn’t respond, it becomes evidence that you asked first. The California courts’ self-help guide lists “write the landlord a letter and try to reach an agreement” as the first step when a deposit isn’t returned, before going to small claims court.
This article is general information, not legal advice. Deposit rules come from state law and sometimes local ordinances, so they vary by state and city. Check the statute or official guidance for where the rental is, and talk to a lawyer or local legal aid office if your situation is complicated.
When should you send a security deposit demand letter?
Send it after your state’s return deadline has passed and the landlord hasn’t returned the full deposit, or after you’ve received an itemized list of deductions you disagree with. Sending it earlier usually just prompts a “the deadline hasn’t passed yet” reply.
Before you write, count the days carefully. Most deadlines run from move-out or the end of the lease, not from when you mailed your keys back, and a few states also require you to give a forwarding address in writing. Mark the deadline on a calendar, then wait a few extra days for mail in transit before you send the demand.
- The deadline passed and you received nothing: ask for the full deposit.
- You received a partial refund with no itemized list: ask for the balance and point to the itemization rule in your state.
- You received an itemized list you dispute: ask for specific deductions to be reversed and explain why, such as normal wear and tear or damage that was there at move-in.
- You never gave a forwarding address: give one now in the letter, because some states start the landlord’s duty only after you do.
How long does a landlord have to return a security deposit?
It depends on the state. The examples below come from official state sources, and they show how much the rules differ. Local rent-regulation rules can add requirements, and the deadline usually changes if the landlord makes a claim against the deposit. If your state isn’t listed, look up your state’s landlord-tenant statute or attorney general’s tenant guide.
| State | Return deadline | Itemized deductions | Official source |
|---|---|---|---|
| California | 21 days after the tenant moves out | Deductions must come with an itemized statement | California Courts self-help guide |
| New York (non-regulated units) | 14 days after the tenant moves out | Itemized “receipt” within 14 days, or the entire deposit must be returned | New York Attorney General tenants’ rights guide |
| Texas | 30 days; the tenant must give a forwarding address | Itemized list of deductions with a description of the damages | Texas Attorney General renters’ rights page |
| Florida | 15 days if no claim; notice of a claim within 30 days by certified mail | Tenant has 15 days after receiving the notice to object in writing | Florida Statutes section 83.49 |
Do you have to give your landlord a forwarding address?
In some states, yes. The Texas Attorney General says that under Texas law “you must give the landlord a forwarding address in order to receive your returned security deposit.” Florida’s statute includes a required lease notice telling tenants they must give the landlord a new address so the landlord can send notices about the deposit.
Even where the law doesn’t require it, a written forwarding address removes the landlord’s easiest excuse. If you didn’t give one at move-out, put it in the demand letter and say the deposit should be sent there. Keep a copy, because the date you provided the address may matter later.
What should a security deposit demand letter include?
Keep it to one page if you can. Every line should be a fact the landlord can check or a request with a date. Leave out insults and threats you don’t intend to carry out.
| Element | What to write | Why it matters |
|---|---|---|
| Your name and new address | Current mailing address where the refund should go | Serves as your written forwarding address |
| Date | The date you mail the letter | Starts the clock on your response deadline |
| Landlord’s name and address | Name and address from the lease or the landlord’s notices | Shows you sent it to the right party |
| Rental property | Full street address and unit number | Identifies the tenancy |
| Lease and move-out dates | Lease end date and the day you returned the keys | Lets anyone count the state deadline |
| Deposit amount | The amount you paid and any amount already refunded | States exactly what you’re owed |
| State rule | The deadline and the statute or official guide you’re relying on | Shows you know the rule without arguing law |
| Disputed deductions | Each deduction you dispute and why | Gives the landlord a reason to reconsider |
| Amount demanded and due date | A specific dollar amount and a reasonable date, such as 10–14 days out | Makes the request concrete |
| Next step | That you may file in small claims court if unpaid | Sets expectations without threats |
| Enclosures | List of copies included, such as move-out photos | Points to your evidence |
What does a security deposit demand letter look like?
Here’s a short example from a fictional tenant in Texas to a fictional landlord. Names, addresses, and amounts are invented. Adjust the deadline and the rule to the state where the rental is.
- Heading: Jordan Ellis, 88 Cedar Lane, Apt. 4, Round Rock, TX 78664
- Date: October 9, 2026
- Inside address: Ms. Carla Benton, Benton Rentals LLC, 1200 Oak Street, Austin, TX 78701
- Re: Return of security deposit, 455 Pine Street, Unit 2B, Austin, TX 78702
- Salutation: Dear Ms. Benton:
- Body, paragraph 1: My lease at 455 Pine Street, Unit 2B, ended on August 31, 2026, and I returned the keys that day. I paid a security deposit of $1,200. I gave you my forwarding address in writing on August 31, and I’m repeating it above.
- Body, paragraph 2: More than 30 days have passed and I haven’t received my deposit or an itemized list of deductions. The Texas Attorney General’s renters’ rights page explains that a landlord must return the deposit, less any itemized deductions, within 30 days.
- Body, paragraph 3: Please send $1,200 to the address above by October 23, 2026. If I don’t receive the deposit or a written explanation by then, I plan to file a claim in justice court. I’d prefer to resolve this directly.
- Closing: Sincerely,
- Signature and typed name: (signature) Jordan Ellis
- Enclosures: Copy of lease page showing deposit; move-out photos dated August 31, 2026
What evidence should you keep with the letter?
A demand letter works best when you can back up every sentence. Collect your records before you mail it and keep them together in one folder.
- The signed lease and any addenda that mention the deposit.
- Proof you paid the deposit, such as a receipt or bank statement.
- Move-in and move-out photos or video, with dates.
- Any move-in checklist or inspection report.
- Your written forwarding address and the date you gave it.
- Any itemized list or messages from the landlord about deductions.
- A copy of the demand letter and your mailing receipts.
How should you send it so you can prove it was delivered?
Send it in a way that creates a record. Certified Mail is the common choice: USPS says it gives the sender a mailing receipt and, on request, electronic verification that the item was delivered or that delivery was attempted. Use the landlord’s notice address from the lease if it lists one.
At USPS, Certified Mail costs $5.55 on top of postage, and a 1-ounce stamped letter is $0.82, per Notice 123 (letter and extra-service prices effective July 12, 2026). A return receipt adds $2.91 for the electronic version or $4.65 for a hardcopy PS Form 3811. You can also email a copy so the landlord has it right away, but keep the mailed version as your record.
IRIS’s Certified Mail guides cover the forms and steps in more detail, so this article doesn’t repeat them.
| Item | Price | What you get |
|---|---|---|
| First-Class Mail stamped letter, 1 oz | $0.82 | Postage |
| Certified Mail fee | $5.55 | Mailing receipt and delivery record |
| Return Receipt, electronic | $2.91 | Electronic delivery record with signature |
| Return Receipt, hardcopy (PS Form 3811) | $4.65 | Mailed green card |
What if the landlord still doesn’t pay?
If the due date in your letter passes without payment or a reasonable answer, small claims court is the usual next step for a deposit dispute. Small claims is designed for people to handle without a lawyer, and filing fees and limits are set by each state.
In California, for example, the courts’ self-help guide says a judge may award up to two times the deposit as extra damages if the landlord kept it in bad faith, and that a tenant can sue for up to $12,500 in small claims court. California also offers a free online tool that helps you write a demand letter for a security deposit. Other states have their own limits and penalties, so look for the small claims page on your state court’s website.
Bring your demand letter, the mailing and delivery records, and the evidence folder to court. The letter shows the judge you gave the landlord a fair chance to pay before suing.
Can you mail a security deposit demand letter online?
Yes. IRIS Postal Forms is an independent print-and-mail service, not USPS or any agency. Its Security deposit return request template helps you state the amount requested, the rental property, and the facts supporting return of the deposit, and it reminds you to check the lease and applicable state or local deadlines before mailing. You can also upload your own US Letter-size PDF.
IRIS prints the letter and mails it by USPS First-Class Mail to a US address. You enter the sender and recipient addresses and review the document, addresses, options, and total before paying. A one-page black-and-white letter is $3.20; with Certified Mail it’s $10.15, with tracking on your order page, and an Electronic Return Receipt adds $2.91. IRIS doesn’t offer a hardcopy green card, can’t enclose physical items such as original documents, and doesn’t guarantee delivery dates. Order status isn’t proof of delivery, and a printed PDF can’t supply a handwritten signature.
Sources & further reading
Product details checked against the IRIS API contract when this article was published. Platform references can change; consult the linked documentation when implementing.
- California Courts: Security deposits
- California Courts: Demand letter for security deposit
- California Courts: Small claims
- New York Attorney General: Residential tenants’ rights guide
- Texas Attorney General: Renters’ rights
- Florida Statutes section 83.49
- USPS Notice 123: Price List
- USPS DMM 503: Extra Services
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