Idaho Security Deposit Small Claims — How to Sue Your Landlord for a Withheld Deposit

Idaho's Security Deposit Refund Rules

When you move out of a rental in Idaho, your landlord has either 21 days or up to 30 days (if the lease explicitly states 30 days) to do one of two things:

1. Return your full security deposit, or
2. Send you a signed, itemized statement explaining what they deducted and why — along with whatever's left of the deposit

This deadline runs from the date you surrender the premises (hand over the keys, complete the move-out). It's governed by Idaho Code § 6-321(2).

If 21 (or 30) days pass with no refund and no itemized statement, the landlord has violated the statute. But you can't file in court yet — Idaho has a mandatory pre-filing step.

The 3-Day Demand Letter (Required)

Under Idaho Code § 6-320, you must serve the landlord with a written demand before you have legal standing to sue. This is not optional. Skip it and the court dismisses your case.

The demand letter must:

• Identify the specific violation (no refund, no itemized statement, wrongful deductions)
• Give the landlord three days after the day of receipt to cure the problem, not counting weekends or holidays

You can deliver it in person to the landlord or the landlord's agent with a witness, or send it by USPS Certified Mail with a return receipt requested. Keep proof of when the landlord receives it. The three-day period starts after the day of receipt and does not count weekends or holidays.

If the landlord returns your deposit within those 3 days, the dispute is resolved. If they don't respond or refuse to pay, you can file your small claims case.

Treble Damages Under Idaho Code § 6-317

Here's where following the proper sequence pays off. If you correctly comply with the 3-day demand procedure and the landlord still doesn't return the deposit, you may be eligible for treble damages — up to three times the amount wrongfully withheld.

A $2,500 wrongfully held deposit could become a $7,500 judgment. A $5,000 deposit could yield $15,000 — exactly at the current small claims court limit after SB 1330.

The treble damage award is at the judge's discretion, not automatic. But proper compliance with the § 6-320 demand procedure is the prerequisite to even asking for it.

What Landlords Can Deduct

Not every deduction is wrongful. Idaho law allows landlords to deduct only for reasons agreed to in the lease, including:

• Unpaid rent
• Damage beyond normal wear and tear
• Cleaning or repair costs allowed by the lease

What they cannot deduct for:

• Normal wear and tear (carpet aging, paint fading, minor scuffs)
• Pre-existing damage documented at move-in
• Routine cleaning when the unit was left in reasonable condition

If the landlord's deductions are partially legitimate and partially wrongful, you'd sue for the wrongful portion.

Filing the Claim

Once the 3-day cure period expires without a resolution:

1. File Form CAO SC 1-2 (Claim of Plaintiff) at the magistrate court in the county where the rental property is located
2. Pay the $69 filing fee
3. State the deposit amount, the violation (§ 6-321 deadline missed, no itemized statement, or wrongful deductions), and your treble damage request if applicable
4. Serve the landlord through the sheriff, a process server, or certified mail via the clerk

Evidence to Bring to the Hearing

• Your signed lease (showing the deposit amount and any 30-day return clause)
• Bank statement or canceled check showing you paid the deposit
• Move-in and move-out photos (date-stamped)
• Any communication with the landlord about the deposit
• Your 3-day demand letter with the certified mail return receipt
• The landlord's itemized statement (if they sent one — you'll challenge the deductions)
• The calendar showing the 21-or-30 day deadline was missed

Print four copies of everything — the judge, the landlord, yourself, and the court record each get a set.

Our Idaho Small Claims Filing Guide includes a demand letter template with the exact statutory language for security deposit disputes, plus a deposit-dispute evidence checklist and a timeline calculator for the refund and cure deadlines.

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