Washington security deposit law

What your landlord is legally required to do after you move out, how long they have, and what it costs them if they get it wrong.

The deadline

Under RCW 59.18.280, a landlord in Washington must return your security deposit — together with any required written itemization of deductions — within 30 days. Once that window closes without payment or a proper itemization, the landlord is in violation of the statute.

The deadline moved from 21 to 30 days by 2023 c 331 s 4. Two remedies sit in § 59.18.280(2) and only one of them is discretionary. A landlord who misses the 30 days is liable for the FULL amount of the deposit and is barred from asserting any claim or defense for keeping any of it — automatically, unless circumstances beyond their control prevented it or the tenant abandoned the premises. The award of up to twice the deposit is separate, requires an intentional refusal, and is at the court's discretion. The automatic one is the stronger of the two and the one most summaries omit.

What it costs your landlord

Under RCW 59.18.280, a landlord who wrongfully withholds a deposit in Washington may be liable for up to twice the deposit where the refusal was intentional, plus costs and reasonable attorney's fees to the prevailing party. That exposure is the reason a formal demand letter works: it is usually cheaper for a landlord to pay you than to argue about it.

What your landlord may deduct in Washington

Amounts for damages the tenant is responsible for, together with unpaid rent and other charges — wear resulting from ordinary use excepted.

RCW 59.18.280

Ordinary wear and tear

Washington excepts ordinary-use wear and holds the landlord to a higher itemisation standard than most states.

“wear resulting from ordinary use of the premises”

What a compliant itemization has to contain

A full and specific statement of the basis for retaining any of the deposit — a higher bar than an itemized list.

Read it yourself: RCW 59.18.280

How to get your deposit back in Washington

1. 1. Confirm the deadline has passed. Count from the day you moved out and returned possession. In Washington that's 30 days.
2. 2. Put your forwarding address in writing. In several states a landlord has no obligation until they have it, and having sent it protects your claim.
3. 3. Gather your evidence. The lease, proof you paid the deposit, move-in and move-out photos, and any itemization they sent.
4. 4. Send a written demand by certified mail. Cite RCW 59.18.280, state the amount owed, and give a deadline to pay. Certified mail creates the delivery record a judge will want to see.
5. 5. File in small claims if they ignore you. You don't need a lawyer. File in the county where the property is located.

Common questions

How long does a landlord have to return a security deposit in Washington?

Under RCW 59.18.280, a Washington landlord has 30 days to return the deposit and provide any required written itemization of deductions.

What is the penalty if my landlord keeps my deposit in Washington?

Under RCW 59.18.280, a landlord who wrongfully withholds may be liable for up to twice the deposit where the refusal was intentional, plus costs and reasonable attorney's fees to the prevailing party.

Do I have to sue to get my security deposit back?

Often not. A formal written demand sent by certified mail puts your landlord on notice of the statute, the deadline they missed and the penalty attached to it — and gives you a dated record that they received it. Small claims court is the fallback if they ignore it.