Start with the deadline
State law typically sets a window for landlords to return a security deposit (or the remaining balance, with an itemized list of deductions) after a tenant moves out. The exact number of days varies by state — some are short, some allow longer — so the first thing to check is what your state actually requires. The state-by-state security deposit rules lay out the deadline and process where you live; do not assume your state matches a number you saw somewhere else.
What "itemized" is supposed to mean
States that set a return deadline typically also require the landlord to explain any deductions in writing — not just "damages: $400," but which items, what they cost to fix or clean, and often supporting receipts or estimates. California's statute is a detailed, verified example: it requires photos of the damage, a description of the work, the hourly rate if the landlord did it themselves, and copies of invoices if a contractor did (Cal. Civ. Code § 1950.5). A landlord who ignores your state's itemization rule may lose the right to withhold anything at all, even if some of the deductions would otherwise have been valid.
Keep in mind that "itemized" is doing real work in that sentence. A one-line statement that just says "cleaning and repairs: $350" is not the same as a real itemization, and in states that spell out what has to be included, a vague statement like that can be challenged on its own, separately from whether the underlying charges were fair.
Step 1: send a written demand letter
Once the deadline passes with no deposit and no itemized statement, send a demand letter by certified mail or another method that proves delivery. Reference your move-out date, the amount you are owed, and the fact that the statutory deadline has passed. This step matters even if you plan to go to court — it shows you gave your landlord a fair chance to fix it, and it is the letter you will attach as evidence if the dispute continues. A ready-made demand letter covers the pieces you need.
Step 2: small claims court
If the demand letter goes nowhere, small claims court is built for exactly this dispute. You generally do not need a lawyer, and the process is designed for people representing themselves. Bring your lease, your move-in and move-out photos, the demand letter, and any written communication with your landlord. Filing fees and the dollar limit for a claim vary by court, so check your local small claims court's own rules before you file.
Most small claims cases move faster than a regular lawsuit — many courts resolve them in a single hearing, and a judge will typically ask you to walk through your documentation and explain, item by item, why each deduction was invalid. This is exactly why the photo comparison and the paper trail from your demand letter matter: a judge who can see a clear before-and-after picture has a much easier time ruling in your favor than one working from your word alone.
Penalties for bad-faith withholding
Beyond returning what is owed, some states penalize a landlord who withholds a deposit in bad faith. California is a good example with real numbers behind it: a landlord who keeps a deposit in bad faith can be on the hook for statutory damages of up to twice the deposit amount, on top of the actual amount owed (Cal. Civ. Code § 1950.5). Other states have their own version of this penalty, with their own multiplier or fixed amount — check the state-by-state security deposit rules rather than assuming the number is the same everywhere you go.
Prevention is still the best defense
The dispute is much easier to win if you documented the unit's condition before you handed back the keys. Photograph and time-stamp every room at move-in and move-out, keep copies of every message with your landlord, and give your forwarding address in writing when you move — some states will not start the return-deadline clock until they have it. Upload your lease to Honestkey and it flags any deposit-related clause worth double-checking before a dispute ever starts.