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How to Write a Security Deposit Demand Letter (Plus a Free Template)

A simple demand-letter structure: timeline, amount, evidence, and deadline — plus a copy/paste template and when to use certified mail.

1 min readUpdated August 2026

Reviewed: 2026-08-11

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A demand letter is a structured escalation step. It's not about sounding aggressive — it's about being clear, factual, and easy to verify.

Demand letter structure

  1. Identify the property, tenancy dates, and deposit amount.
  2. State what you received (refund and/or itemization) and what's missing.
  3. Dispute deductions briefly using condition, causation, age, prior condition, cost, betterment, and missing required support.
  4. Demand a specific amount by a specific deadline.
  5. Attach evidence and keep proof of delivery.

Use a template (general)

Copy/paste: demand letter for return of security deposit.

Use a letter with state context

If you are in a reviewed state, a state-specific draft can include a source-linked citation and relevant procedural questions. Verify it against current law and your facts before sending. Use the free analysis flow to generate one.

Delivery tips: certified mail guide.

Frequently asked questions

Short answers to the questions renters ask most often on this topic.

Do security deposit rules vary by state?

Yes. Deadlines, remedies, and allowed deductions vary by state and sometimes by city. Check the current rules for the rental's location.

Should I send a demand letter by certified mail?

A postal record can help, but Certified Mail does not prove envelope contents and is not universally required. Follow any rule for the specific notice and sender, and keep the exact signed letter, attachments, receipt, and delivery or attempt record.

Next step

Choose the next step that fits your situation. You can keep researching for free or prepare a personalized letter when you are ready.