Wyoming Security Deposit Small Claims: How to Sue Your Landlord for an Unreturned Deposit

A Wyoming landlord must return your security deposit with an itemized statement within 30 days after the rental agreement ends, or 15 days after receiving your new mailing address, whichever is later. If there is damage to the unit, that period is extended by 30 days. When the applicable deadline passes without your money or an itemization, small claims court is a possible remedy — and the filing process has specific steps that most tenants miss.

The Statutory Timeline

Wyoming's Residential Rental Property Act (W.S. § 1-21-1208) sets strict deadlines:

1. Tenant notifies the landlord in writing where payment and notice may be sent — within 30 days of lease termination. This notice is required by W.S. § 1-21-1208(a).

2. Landlord returns the deposit with an itemized statement — within 30 days of lease termination, or 15 days after receiving your new mailing address, whichever is later. If there is damage to the unit, this period is extended by 30 days.

3. If the deadline passes without a return or itemization, you send a written demand for the full deposit amount.

The order matters: provide the forwarding address within the statutory window, then make a clear demand after the landlord's return deadline passes. A small-claims affidavit must state that demand was made and payment refused.

Before You File: Building Your Evidence

Security deposit cases are won or lost on documentation. Before filing Form SC 01, gather:

• The lease agreement — proves the deposit amount, lease term, and any conditions about deductions
• Written forwarding address notice — your copy of the letter or email you sent within 30 days of move-out, with proof of delivery if possible
• Move-in and move-out condition records — photos with dates, a written condition checklist if you completed one, or any communication acknowledging the unit's condition
• Your demand letter and delivery proof — the certified mail return receipt (green card) showing the landlord received your demand
• Any communication from the landlord — texts, emails, or letters about deductions, reasons for withholding, or promises to return the deposit

If the landlord sent an itemized deduction statement, bring it. Judges evaluate whether the deductions were reasonable and supported — a landlord claiming $1,200 for "cleaning" on a unit that was left spotless has a documentation problem.

Who to Sue: The Landlord or the Property Management Company

This trips up a lot of tenants. If you rented from an individual landlord, sue that person by their legal name. If the property is owned by an LLC or managed by a property management company, you need to sue the legal entity — not the trade name on the building.

Search the Wyoming Secretary of State's WyoBiz database (wyobiz.wyo.gov) to find the exact legal name and registered agent for service. Filing against "Mountain View Apartments" when the legal entity is "Mountain View Properties LLC" can create judgment enforcement problems down the road.

Filing the Claim

Security deposits in Wyoming are capped by contract, but the small claims jurisdictional limit is $6,000. Most residential deposits fall well within that range.

File Form SC 01 at the Circuit Court in the county where the rental property is located or where the landlord resides. The $10 filing fee plus sheriff service ($25–$50) gets the process started. In your affidavit, state the deposit amount, the lease termination date, that you provided a forwarding address, that the statutory return period expired, and that the landlord failed to return the deposit or provide an adequate itemization.

What Happens at the Hearing

The judge evaluates whether:

• You provided a forwarding address within the statutory window
• The applicable return deadline under W.S. § 1-21-1208(a) passed
• Any deductions were reasonable and properly documented
• You sent a demand before filing

If the landlord unreasonably fails to comply with the statutory return or itemization requirements, W.S. § 1-21-1208(c) allows the renter to recover the full deposit and court costs. If the landlord provided an itemization but the deductions were unreasonable or unsupported, the judge decides the award based on the evidence.

Bring three sets of everything — lease, forwarding notice, demand letter, delivery receipt, photos, and any landlord communications. The judge gets one set, the landlord gets one, and you keep one.

For a deposit recovery timeline tracker and a complete filing system built around Wyoming's security deposit statute, get the filing toolkit.

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