Washington State Security Deposit Rules: A Renter's Guide

Washington’s security deposit rules are short, strict, and mostly about paperwork. A landlord can collect a deposit only if there is a written lease and a signed move-in condition checklist, has to hold the money in a Washington trust account, and must either refund it or send a full and specific written statement of deductions within 30 days after the tenancy ends and you move out. This guide walks through each rule in the order you will meet it, from signing the lease to day 30 after move-out, and explains what the statute says happens if the deadline passes.

Everything below that is stated as law comes from the current text of chapter 59.18 RCW, the Residential Landlord-Tenant Act. Seattle-specific points come from the City of Seattle’s own renter guidance and are labeled that way. This is general information, not legal advice.

Before you pay: the written lease and move-in checklist

The checklist is a condition of collecting a deposit

Under RCW 59.18.260, if you pay any money as a deposit, the lease must be in writing and must state the terms under which the deposit can be withheld. The same section says no deposit may be collected unless the landlord gives you, at the start of the tenancy, a written checklist or statement “specifically describing the condition and cleanliness of or existing damages to the premises,” including walls (paint and wallpaper), carpets and other flooring, furniture, and appliances.

Both you and the landlord sign and date the checklist, and you get a copy. You can ask for one free replacement copy later. If a landlord collects a deposit without providing the checklist, RCW 59.18.260 makes the landlord liable to the tenant for the amount of the deposit, and the prevailing party in a lawsuit can recover court costs and reasonable attorneys’ fees.

Why the checklist matters at move-out

The checklist is the baseline for every damage deduction. RCW 59.18.280 says a landlord cannot withhold money for repairing or replacing fixtures, equipment, appliances, or furnishings if their condition was not reasonably documented in that checklist. If the checklist says “oven: clean, working,” that line becomes evidence. If the checklist skipped the oven, a later oven charge is on weak footing.

Treat move-in day as the first step of getting your deposit back. Our move-in cleaning and inspection checklist covers what to look at and how to write it down before you unpack.

Where your money goes: trust account and receipt

RCW 59.18.270 requires the landlord to put your deposit promptly into a trust account at a financial institution or licensed escrow agent located in Washington. The landlord must give you:

• a written receipt for the deposit, and
• written notice of the name, address, and location of the depository, plus notice of any later change.

Unless you agreed otherwise in writing, the landlord keeps any interest the account earns. If the building changes hands during your tenancy, the deposit moves to the new landlord’s trust account and the new landlord must notify you. Keep the receipt and the depository notice with your lease. If you never received them, note that in your records now rather than at move-out.

Nonrefundable fees are not deposits

Some landlords charge a nonrefundable fee, often for cleaning or screening. RCW 59.18.285 sets three rules:

1. Nonrefundable money cannot be called a deposit or part of a deposit.
2. A nonrefundable fee requires a written rental agreement that clearly says the fee is nonrefundable.
3. If the agreement does not say so, the fee must be treated as a refundable deposit, under the same checklist, trust account, and 30-day rules.

There is a related rule at move-out. RCW 59.18.130(10) says a tenant “shall not be charged for normal cleaning if he or she has paid a nonrefundable cleaning fee.” If you paid one, read your deposit statement for cleaning charges with that sentence in mind. The deductions guide explains how this plays out.

Paying in installments under RCW 59.18.610

Move-in costs can be steep. RCW 59.18.610 lets many renters spread them out:

• On your written request, the landlord must let you pay deposits, nonrefundable fees, and last month’s rent in installments.
• If the rental is for a specified term of three months or longer, you can pay in three consecutive, equal monthly installments starting at the beginning of the tenancy. In all other cases, it is two.
• Installments are due at the same time as rent. The landlord cannot charge a fee or interest for the plan.
• The schedule must be in writing and signed by both of you.
• A landlord does not have to offer installments if deposits plus nonrefundable fees total no more than 25 percent of the first full month’s rent and last month’s rent is not required up front.

A landlord who refuses a qualifying written request is subject to a statutory penalty of one month’s rent plus reasonable attorneys’ fees, payable to the tenant, under the same section. The City of Seattle’s renter guidance also addresses installments, but its renter and landlord pages currently describe the Seattle schedules differently, so we do not summarize them here. Ask Renting in Seattle directly before relying on a Seattle-specific schedule.

Seattle add-ons, according to the City

If you rent inside Seattle city limits, the City of Seattle’s renter guidance describes extra limits on move-in costs. The City’s move-in costs page says:

• nonrefundable fees may be charged only for cleaning and screening, capped at 10 percent of one month’s rent;
• the security deposit and fees combined cannot exceed one month’s rent;
• a pet deposit of up to 25 percent of one month’s rent can be charged on top of that; and
• a landlord cannot charge for cleaning at the end of the tenancy if they charged for cleaning at the start.

The City’s return of your security deposit page adds that a landlord who needs more time to get repair quotes or a final utility bill must notify you within the 30-day period, and that landlords “should consider depreciated value” when calculating damage deductions. These are the City’s statements of local rules. If a Seattle-specific point matters to your situation, call the Renting in Seattle helpline listed on that page to confirm.

Move-out: the 30-day rule and what the statement must include

The deadline

RCW 59.18.280 gives the landlord 30 days after the termination of the rental agreement and your vacating the premises to give you a full and specific statement of the basis for keeping any of the deposit, the supporting documentation, and any refund due. If you abandoned the unit, the 30 days run from when the landlord learns of the abandonment.

The landlord complies if the statement and refund are delivered to you personally, or deposited in the US mail, first-class postage prepaid, properly addressed to your last known address, within the 30 days. The mailing date counts, not the date you receive it. That is why giving the landlord a forwarding address in writing matters; see our guide to documenting your apartment’s condition for how to do that alongside your move-out photos.

What a compliant statement includes

Use this checklist when the envelope arrives:

• A full and specific explanation of each amount kept, not a single lump sum.
• For damage charges, copies of estimates received or invoices paid that reasonably substantiate them.
• If the landlord or an employee did the repair: a bill, invoice, or receipt for materials (or a vendor price list for supplies already on hand), plus a statement of the time spent and the reasonable hourly rate.
• Any refund due, sent with the statement.
• No charge for wear resulting from ordinary use of the premises (often called normal wear and tear).
• No carpet cleaning charge unless the landlord documents carpet wear beyond ordinary use.

Those documentation rules apply to damage. Under RCW 59.18.280(4), they do not apply when the landlord withholds money for unpaid rent or other charges owed.

Timeline: move-in to day 30

When	What should happen	Statute or source
Before paying any deposit	Written lease stating when the deposit can be withheld	RCW 59.18.260(1)
Move-in day	Signed, dated condition checklist; you keep a copy	RCW 59.18.260(2)-(3)
When the deposit is paid	Written receipt; written notice of the depository’s name, address, and location	RCW 59.18.270
First months (if requested in writing)	Signed installment schedule, two or three equal payments, no fee or interest	RCW 59.18.610
During the tenancy	Keep the unit as clean and sanitary as conditions permit; no intentional or negligent damage	RCW 59.18.130
Giving notice (month-to-month)	Written notice of 20 days or more before the end of a rental period	RCW 59.18.200
Move-out day	Restore the unit to its initial condition except wear from ordinary use; return keys; give forwarding address in writing	RCW 59.18.130(10)
Day 1 to day 30	Landlord prepares statement with estimates or invoices for any damage charges	RCW 59.18.280(1)
Day 30	Statement, documentation, and refund delivered or mailed to your last known address	RCW 59.18.280(1)(a)
After day 30	If nothing was sent, the statute’s penalty provisions come into play	RCW 59.18.280(2)

For the full packing-and-logistics side of the same period, use the 30-day moving timeline.

Penalties written into the statute

RCW 59.18.280(2) spells out what happens when a landlord fails to give the statement, documentation, and any refund within 30 days:

• The landlord is liable to the tenant for the full amount of the deposit.
• In a suit by the tenant to recover the deposit, the landlord is barred from asserting any claim or raising any defense for keeping any of it, unless the landlord shows that circumstances beyond the landlord’s control prevented the statement, or that the tenant abandoned the unit.
• A court may award up to two times the deposit for the landlord’s intentional refusal to give the statement, documentation, or refund, subject to the same exceptions.
• In any action by the tenant to recover the deposit, the prevailing party recovers the cost of suit or arbitration, including a reasonable attorneys’ fee. That cuts both ways: a tenant who loses can owe the landlord’s fees.

Two more protections in RCW 59.18.280(3): charges for wear from ordinary use, or charges not backed by the required documentation, may not be charged to you, reported to a consumer reporting agency, tenant screening service, or prospective landlord, or sent to collections. And for leases that began on or after July 23, 2023, a landlord suing for more than the deposit must file within three years of the tenancy ending.

What to do if the deadline passes

Consider a hypothetical: Jordan rents a one-bedroom in Ballard on a month-to-month basis, gives written notice, and moves out on June 30, which is also the last day of the tenancy. Jordan emails a forwarding address and keeps a copy. By August 5, nothing has arrived at either address. This is an illustrative scenario, not a real case.

Here are the options Jordan has, in the order most people take them.

1. Check the dates and the mail

Count 30 days from the date when both the tenancy had ended and you had moved out. Remember that mailing within 30 days is enough, so allow a few days for delivery. Check mail at your old address if you set up postal forwarding, and ask the landlord in writing whether and when anything was sent.

2. Send a written request

A short, polite letter creates a record. A plain outline:

1. Your name, the rental address, and the unit number.
2. The date the tenancy ended and the date you returned the keys.
3. The deposit amount you paid and the date (attach the receipt if you have it).
4. A statement that more than 30 days have passed and you have not received a statement or refund, with a reference to RCW 59.18.280.
5. A request that the landlord send the deposit by a specific date, such as 10 or 14 days out.
6. Your current mailing address, phone, and email.
7. Your signature and the date.

Send it in a way you can prove, such as certified mail or a hand delivery with a dated copy, and keep a copy. WashingtonLawHelp.org’s Deposits and damages guide includes sample letters you can adapt.

3. Get free information or advice

The Washington Attorney General’s landlord-tenant page collects state resources, and WashingtonLawHelp.org explains deposit disputes step by step. Our tenant resources directory lists Seattle and King County organizations and what each one does.

4. Understand small claims

If the request does not resolve it, small claims court is one place deposit disputes can be heard. Under RCW 12.40.010, the small claims department of district court hears money claims up to $10,000 when brought by a natural person ($5,000 in other cases). Whether to file, and for how much, is your decision; a legal aid organization can help you weigh it.

Keep a deposit file

Most deposit disputes are won or lost on paper. Keep these together from day one:

• Signed lease and any renewals
• Signed move-in checklist (and any photos you took)
• Deposit receipt and depository notice
• Installment schedule, if you used one
• Written notice to vacate and proof of delivery
• Move-out photos and video, dated
• Your written forwarding address and proof you sent it
• The landlord’s statement, envelope (for the postmark), and any refund check

If you are planning the move itself, the Seattle move-out checklist puts these deposit steps in order with everything else you need to do before you leave.