How long must a Washington landlord keep records of the security deposit?
Washington landlords should keep deposit-related records for at least the statute of limitations period for a deposit dispute, typically 4 to 6 years depending on the state. This includes the original deposit receipt, the itemized statement at move-out, any invoices supporting deductions, photographs of the unit at move-in and move-out, and the move-in inspection checklist. After the statutory deadline (30 days under RCW 59.18.280) for returning the deposit has passed, the records are the landlord's defense if the tenant later sues. Without records, the landlord typically loses any contested deduction. Cloud-stored, dated records are best practice. Up to 2x the wrongfully withheld amount plus attorney fees under RCW 59.18.280(2).
Source: RCW 59.18.280
This is an informational answer based on RCW 59.18.280 as of early 2026. It is not legal advice. Housing law changes year to year and local ordinances (especially in rent-controlled or rent-stabilized cities) can override or add to state law. For contested cases, consult a Washington-licensed attorney.