How to Write a Demand Letter for Your Security Deposit

A well-crafted demand letter for a wrongfully withheld security deposit serves two purposes: it gives the landlord a chance to pay without litigation, and it establishes a documented record that strengthens your small claims case if they don’t.

What to Include

Your demand letter should state: the address of the rental, the move-out date, the amount of the security deposit paid, what the landlord returned (if anything) and when, the specific deductions you dispute and why, the total amount you demand returned, and a deadline for payment (typically 10-14 days). Send it certified mail with return receipt.

Cite the statute. Reference California Civil Code § 1950.5 in your letter. A landlord who receives a letter citing the specific code section — and who knows they violated it — is more likely to pay than one who receives a vague complaint. The letter demonstrates that you know your rights, and that knowledge changes how landlords respond.

The California Tenant Defense System gives renters the exact tools, templates, and step-by-step guidance to fight illegal evictions, recover wrongfully withheld security deposits, and enforce habitability rights. Request your free evaluation here.