Wash. Rev. Code § 59.18 § 59.18.110
Failure of landlord to carry out duties -- Determination by court or arbitrator -- Judgment against landlord for diminished rental value and repair costs -- Enforcement of judgment -- Reduction in rent under certain conditions.
Operative Text
(1) If a court or an arbitrator determines that: (a) A landlord has failed to carry out a duty or duties imposed by RCW 59.18.060 ; and (b) A reasonable time has passed for the landlord to remedy the defective condition following notice to the landlord in accordance with RCW 59.18.070 or such other time as may be allotted by the court or arbitrator; the court or arbitrator may determine the diminution in rental value of the premises due to the defective condition and shall render judgment against the landlord for the rent paid in excess of such diminished rental value from the time of notice of such defect to the time of decision and any costs of repair done pursuant to RCW 59.18.100 for which no deduction has been previously made. Such decisions may be enforced as other judgments at law and shall be available to the tenant as a set-off against any existing or subsequent claims of the landlord. The court or arbitrator may also authorize the tenant to make or contract to make further corrective repairs and the tenant may deduct from the rent the cost of such repairs, as long as the court specifies a time period in which the landlord may make such repairs before the tenant may commence or contract for such repairs. (2) The tenant shall not be obligated to pay rent in excess of the diminished rental value of the premises until such defect or defects are corrected by the landlord or until the court or arbitrator determines otherwise.
Under Wash. Rev. Code § 59.18.110, when a court or arbitrator finds that a landlord has failed to fulfill maintenance duties under RCW 59.18.060 and that a reasonable time has passed after proper notice without a remedy, the decision-maker may calculate how much the defective condition reduced the property's rental value. The landlord can then be ordered to repay rent collected above that diminished value, and the tenant's obligation to pay full rent is suspended until the defect is corrected or a court or arbitrator rules otherwise. Judgments issued under this provision can be enforced like any other civil judgment and may also be applied as an offset against any rent claims the landlord later brings.
Plain English — not legal advice.
Under § 59.18.110, property owners and managers who receive a defect notice under RCW 59.18.070 are generally expected to address the reported condition within a reasonable time, because failure to do so can expose them to a court or arbitrator's determination of diminished rental value and a judgment for rent collected above that amount. Compliant operators typically document their repair timelines, keep records of all tenant notices, and complete corrective work promptly so that no gap exists between notice and remedy. Operators should also be aware that a tenant may be authorized by a court to arrange repairs directly and deduct those costs from rent if the landlord is given a specified window to act first and does not do so.
General guidance for property managers — not legal advice for your specific situation. Consult an attorney for advice on your case.
Section § 59.18.110 of Washington's Residential Landlord-Tenant Act provides that once proper notice of a defect has been given under RCW 59.18.070 and a reasonable time has passed without a fix, a tenant may pursue a court or arbitration proceeding to have the rental value of the unit formally reduced. If successful, the tenant may receive a judgment for rent paid above the diminished value, and that judgment can be used as an offset against any future rent claims the landlord brings. Tenants exploring this path may find it helpful to consult a tenant-rights organization or legal aid provider familiar with Washington landlord-tenant law to understand the procedural steps involved.
General guidance for tenants — not legal advice for your specific situation. Consult a tenant-rights organization or attorney for advice on your case.
Generated October 7, 2026 — auto-generated, not yet human-reviewed. See /transparency for methodology.
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