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How do I dispute my security deposit by mail?

Write a formal demand letter asking for an itemized list of deductions and the return of the amount you believe you are owed, sent in a way that gives you proof of delivery. Landlords must return deposits within a deadline set by your state or province; if yours misses it, small claims court is the usual next step.

This is general information, not legal advice.

What should the demand letter include?

ElementWhy it matters
Your name, old address, and new addressIdentifies the tenancy and tells the landlord where to send the money
Lease dates and deposit amountRemoves any ambiguity about which deposit you mean
Demand for an itemized deduction listMany states require landlords to justify each deduction in writing
The amount you are claiming backA specific number shows you have done the math
A response deadlineCreates a paper trail if you end up in court
Proof of deliveryCertified or registered mail proves the landlord received it

Keep the tone firm and factual, not angry. "On June 1 I vacated 412 Elm Street. My deposit was one month's rent. I am requesting an itemized list of deductions and return of the remaining balance within 14 days." That paragraph does more work than a page of frustration. Send it to the landlord's last known address, and keep a copy of everything: the letter, the mailing receipt, and any reply.

How long does the landlord have to return it?

It depends entirely on where you live. US states set their own deadlines, commonly measured in weeks from move-out, and several impose penalties on landlords who withhold deposits in bad faith, sometimes a multiple of the deposit itself. In Canada, the provinces handle deposits through their tenancy laws: Ontario, notably, does not allow traditional security deposits at all (only a last-month rent deposit), while provinces like British Columbia and Alberta have their own return timelines and dispute processes through tenancy branches.

The itemized list is your strongest tool in the dispute. In many states, a landlord who cannot produce an itemized accounting of deductions loses the right to keep the money, regardless of the condition of the unit. That is why the demand letter asks for the list first: it forces the landlord to commit to specific deductions in writing, which you can then challenge one by one.

What is the difference between wear and tear and damage?

This is where most disputes live. Normal wear and tear, faded paint, worn carpet in high-traffic areas, small nail holes from hanging pictures, is the landlord's cost of doing business and cannot be deducted. Damage, a broken window, a pet-stained carpet, a hole punched in drywall, can be. Your move-in and move-out photos are the evidence: date-stamped pictures of every room, taken at both ends of the tenancy, settle most arguments before they start. If you did not take move-in photos, say so honestly and lean on the itemized list instead.

What if the landlord ignores the letter?

Small claims court is built for exactly this. Filing is inexpensive, lawyers are usually not involved, and judges hear deposit cases constantly. Bring your lease, the demand letter with its delivery proof, your photos, and the landlord's itemized list (or evidence they never sent one). Many landlords settle once served, because defending a deposit case costs them more in time than the deposit is worth. Check your local court's claim limit first to confirm your deposit falls within it.

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