Rental Property Rules in Kennewick, WA: What Residents Actually Need to Know

If you live in Kennewick or are thinking about moving there, rental property rules are one of those things you probably won't think about until they affect you directly. Kennewick has 5 specific rules on the books covering different aspects of rental property rules, and some of them might surprise you.

Rent Control

Kennewick has no rent-control ordinance and is barred from adopting one. RCW 35.21.830 expressly preempts cities, towns, and counties from regulating the amount of rent charged for the rental of private residential property statewide.

Key details: Local Rent Control: None in Kennewick. State Preemption: RCW 35.21.830. Landlord-Tenant Act: RCW 59.18. Rent-Increase Notice: 60 days (RCW 59.18.140). Forum: Benton County District / Superior Court.

Because rent control is preempted, no local penalties apply to rent amounts. Tenant disputes proceed under RCW 59.18 (improper notice, retaliation, habitability) in Benton County District or Superior Court, with discrimination complaints to the Washington State Human Rights Commission or HUD.

The rules around rent control in Kennewick lean permissive, but that does not mean anything goes.

Rental Registration

Kennewick has not adopted a Rental Registration and Inspection Ordinance like Seattle's RRIO. Landlords still need a Washington UBI business license through the Department of Revenue and a Kennewick business license under KMC Title 5, but no separate per-unit rental registration is required.

Key details: Local Rental Registration: None in Kennewick. Authorizing Statute: RCW 59.18.125. Required Business License: State UBI + KMC Title 5. Smoke Alarms: RCW 43.44.110. Habitability: RCW 59.18.060.

Operating a Kennewick rental without a state UBI or city business license endorsement violates RCW 19.02 and KMC Title 5, with administrative citations and possible license refusal. Missing smoke or CO alarms violate RCW 43.44.110 and RCW 19.27.530; habitability failures are enforceable in unlawful detainer or by direct tenant action under RCW 59.18.115.

Kennewick is more permissive than most cities when it comes to rental registration. That said, there are still limits.

Security Deposit Rules

Security deposit rules in Kennewick are set by Washington statute. RCW 59.18.260 requires a written rental agreement, a written move-in checklist, and deposit of funds in a trust account at a Washington bank. RCW 59.18.280 requires return or itemized accounting within 30 days of the tenancy ending.

Key details: Written Agreement Required: RCW 59.18.260. Move-In Checklist: Required before deposit. Trust Account: WA-licensed institution (RCW 59.18.270). Return Deadline: 30 days (RCW 59.18.280). Penalty: Up to 2x deposit + fees.

Failing to provide the move-in checklist or the trust-account receipt before collecting a deposit violates RCW 59.18.260, voiding the right to retain any of the deposit. Missing the 30-day return-or-itemize deadline under RCW 59.18.280 forfeits deduction rights and may trigger statutory damages, costs, and attorney fees.

Rental Inspection Programs

Kennewick has not adopted a periodic rental-inspection program under RCW 59.18.125. Rental conditions are inspected only on complaint through Code Enforcement against the city's adopted building, fire, and property-maintenance codes, and through state habitability duties under RCW 59.18.060.

Key details: Periodic Program: None adopted. Authorizing Statute: RCW 59.18.125 (not used). Habitability Floor: RCW 59.18.060. Adopted Codes: KMC Title 15 (IPMC as adopted). Triggers: Tenant or neighbor complaint.

Failing to correct a Notice of Violation from Code Enforcement triggers escalating administrative penalties under KMC Title 15 and possible Benton County District Court citation. Severe defects may result in placarding the unit as unfit for occupancy.

If you are coming from a city with tighter rules, you will find Kennewick gives residents more flexibility on rental inspection programs.

Just Cause Eviction

Kennewick has no separate local just-cause ordinance, but Washington's statewide just-cause statute, RCW 59.18.650 (effective May 2021), already applies. A landlord may end a tenancy only for one of the enumerated causes, with the prescribed written notice, and may not arbitrarily refuse to renew.

Key details: Local Ordinance: None; state law controls. Statewide Statute: RCW 59.18.650 (eff. 2021). Nonpayment Notice: 14 days (RCW 59.12.030). Breach Notice: 10-day cure or vacate. Forum: Benton County District Court.

Filing or threatening eviction without a listed just cause exposes the landlord to dismissal of the unlawful detainer, statutory damages, and attorney fees under RCW 59.18.650(5). Self-help lockouts are independently actionable under RCW 59.18.290 with up to $100 per day plus damages.

The Bottom Line

Compared to many U.S. cities, Kennewick gives residents more room on rental property rules. 3 of the 5 rules here are rated permissive. But permissive does not mean unregulated. There are still requirements, and the city does enforce them when violations are reported.

This guide is based on Kennewick's current municipal code. Local rules can and do change, so check the individual ordinance pages for the latest details, penalties, and FAQs.