Can I sue my roommate over the security deposit?
Yes. Three common patterns: unfair allocation, kept refund, and damage caused by them. Roommate security-deposit disputes usually come up at the end of the lease. The landlord refunds the deposit to one tenant or sends a single check to the unit; that tenant is supposed to forward each roommate's share. When they don't (or when one roommate caused damage that reduced the refund), the case lands in small claims. Bank records showing what you originally paid in, plus the move-out walkthrough, are the case.
What kinds of deposit disputes can you sue for?
Three common patterns.
Roommate kept your share of the deposit
Most common. Landlord sent the deposit refund to one tenant. That tenant kept the full amount instead of forwarding your share. Bank record from move-in (what you paid in) plus landlord refund record makes the case.
Damage one roommate caused reduced the refund
The deposit was reduced by deductions for damage. If a specific roommate caused the damage, the deduction comes out of their portion. Photos and the move-out walkthrough show who caused what.
Roommate moved out, then claimed share without contributing repair costs
Roommate left mid-lease, didn't help with end-of-lease cleaning or repairs. They demand their full deposit share but didn't help cover end-of-lease costs. The shortfall comes out of their share.
Disputed allocation of deductions
Landlord deducted for general wear-and-tear or unclear damage. Question is how to split deductions between roommates. Default rule: equal split unless one roommate caused specific damage.
How much can you recover?
Your unpaid share of the deposit plus filing fees.
Your share of the deposit
What you originally paid in plus your fair share of any refund. Bank record from move-in showing your contribution.
Interest before the case is decided
State legal rate (7 to 10 percent per year) running from the date the landlord refunded.
Filing fees, interest after judgment
Filing fee, service-of-process cost, interest that keeps running until they pay.
$1,500 share kept by ex-roommate plus interest, plus filing fee.
Send a demand letter first.
Demand letters work especially well for deposit disputes because the documentation is usually clean.
- Bank record from move-in showing what you paid in
- Lease showing both names
- Landlord's refund record or itemization
- Move-out walkthrough notes
- A 14-day deadline
- Sent certified mail to forwarding address
On 09/01/2024, we both moved into 5500 Industrial Way under a joint lease with a $3,000 security deposit. I contributed $1,500 (bank record attached). On 04/30/2026, the landlord refunded the deposit in full ($3,000) to your address. You did not forward my $1,500 share.
I demand within fourteen (14) days:
- Refund of $1,500 in my deposit share;
- Interest at 10 percent per year ($100).
Total demand: $1,600.00. If unresolved, I will file in Small Claims Court.
How to file a deposit case.
Four steps. Documentation of your share is the case.
Establish your share
Bank record from move-in showing your deposit contribution. Lease with both names. Roommate agreement specifying deposit allocation.
Establish the refund
Get the landlord's refund record or itemization. The landlord usually sends a single check to one tenant or to the property address.
Send certified-mail demand
Use the roommate's forwarding address. Most pay at this stage to close the matter.
Hearing
Lead with the bank record, the lease, the refund record, and the demand letter. Hearings usually run 10 to 15 minutes.
Collecting the deposit share.
If they don't pay, you collect using a judgment lien (claim on their property), bank levy (taking money from their account), or writ of execution (court order to seize assets). Wage garnishment is also available.
What evidence do you need for a deposit case?
Bank record + lease + refund record establish the case.
Wire $1,500 to Phoenix Property Management.
Memo: 'Security deposit share — Reese Tenant — Lease 4218'.
Sent 08/28/2024.
Security Deposit
Tenant security deposit is $3,000 paid jointly. Refund (or itemized statement) returned to tenants within 30 days of lease end per state law.
Joint deposit; both tenants entitled to their respective contributions.
Common roommate defenses, with rebuttals.
Three arguments cover most deposit cases.
Keep it simple. Organized records, clear timelines, and solid evidence are your best defense.
How much do tenants actually recover?
Most cases recover the full owed share.
Partial recovery. Court awards portion when documented damage reduces the refund.
Full share + interest. Most common with clean documentation.
Larger deposits. Multi-bedroom apartments with high deposits.
Better evidence. Better prep. Better outcome. Your documentation makes the difference.
What are the alternatives to small claims?
Demand letter is the lowest-friction path.
Demand letter alone
Free, very effectiveWhen it fits: documented split. Most roommates pay at this stage.
Tradeoff: no way to enforce it if they ignore you.
Talk to the landlord
Free, may helpWhen it fits: the landlord can often resolve disputes by allocating deductions clearly. Some landlords issue separate refund checks if asked.
Tradeoff: landlord may decline to get involved.
Small claims (this guide)
When demand failsWhen it fits: demand failed. Damages within state cap.
Tradeoff: 30 to 90 day timeline.
Recover your deposit share.
Demand letters with bank records and refund documentation produce settlement in most cases.
Illustrative. Larger deposits push higher.
Frequently asked.
The questions roommates actually ask before filing. Email support if yours isn’t here.
Can I sue my roommate for keeping my deposit share?
Yes. Whoever receives the deposit refund is legally responsible for handing over each roommate's share. Keeping the whole refund instead of forwarding your share counts as taking your money (the legal name is 'conversion'). Bank records showing your contribution and the landlord's refund record are the case.
What if the deposit was reduced by deductions?
Landlord deductions for damage usually come off the total before splitting. If one roommate caused specific damage, that deduction comes out of their share; any remaining damage is split based on who paid in what originally. Move-out walkthrough shows who caused what.
What if the landlord sent the refund to the wrong tenant?
Most landlords send to one tenant or to the property address. The tenant who receives the check is legally required to forward each roommate's share. Not forwarding = taking your money.
Should I ask the landlord to send separate checks?
At lease signing or before move-out, yes. Many landlords will issue separate checks if all tenants ask and provide forwarding addresses. This avoids the keep-the-deposit problem entirely.
How long do I have to sue?
The deadline (the 'statute of limitations') is usually 2 to 4 years from the date the refund was received. Some states' security-deposit laws have shorter windows. File promptly after the refund deadline passes.
What if my roommate disputes the move-out condition?
The landlord's deductions (if any) are the official record. Your roommate's separate claims about move-out condition rarely succeed without the landlord backing them.
Can I include this with other roommate claims?
Yes. One small-claims case can include unpaid rent + unpaid bills + property damage + deposit. Combine to avoid multiple court appearances.