The law in plain English
Return deadline
Under Or. Rev. Stat. Section 90.300, the deposit response usually has to be sent within 31 days of the move-out timeline described by the state rule.
Required notice
Oregon generally does not impose a statewide deposit cap, but the landlord usually has 31 days to send the refund or an itemized statement, and late or bad-faith withholding can support up to double damages.
This dispute type
In Oregon, renters usually challenge deposit deductions for scuffs, faded paint, flattened carpet, and similar aging because those issues look more like ordinary use than repairable damage. The statute still controls when the refund had to be sent and how deductions had to be explained.
Penalty leverage
If the withholding was wrongful or in bad faith, the exposure allowed under the statute is: You can recover up to twice the amount wrongfully withheld (failure to return on time can constitute bad faith)