Seattle Landlord Laws 2026: What Every Property Owner Must Know Before Leasing

Seattle landlord laws require property owners to follow both Washington State law and additional city regulations governing rental registration, tenant screening, lease terminations, rent increases, security deposits, property access, and other parts of the rental process. Before leasing a property in 2026, landlords must understand and follow each requirement that applies to their rental.

Here, Real Property Associates, Inc. (RPA), a Seattle property management company with more than 30 years of local experience, breaks down the key requirements property owners should know, including RRIO registration, First-in-Time screening, Just Cause eviction requirements, rent increase notices, security deposit rules, and entry notice requirements.

6 Laws Every Seattle Property Owner Needs To Know

Seattle property owners must follow a range of city and state requirements throughout the rental process. Before marketing a property, screening applicants, signing a lease, or making changes during a tenancy, landlords need to understand the laws that apply and have processes in place to remain compliant.

Rental Registration & Inspection Ordinance (RRIO)

Seattle's Rental Registration and Inspection Ordinance (RRIO) requires rental property owners to register their properties with the City and maintain minimum housing and safety standards. According to this ordinance, “All rental property owners in Seattle must register their properties with the City. Inspectors will make sure all registered properties comply with minimum housing and safety standards at least once every 5-10 years.”

Owners can hire a City inspector or qualified private inspector to complete the required inspection. Before an inspection, property owners can use the City of Seattle’s RRIO Inspection Checklist to review the required housing and safety standards and identify potential issues to address.

As of January 2026, RRIO registration costs $126 per property, including the first rental unit, plus $31.50 for each additional unit at the same property. Registration is valid for two years and must be renewed to keep the property’s registration current.

Missing RRIO deadlines can become costly. Overdue registrations and inspections are subject to a $52.50 late fee, and continued noncompliance can result in a Notice of Violation. Once the City begins assessing civil penalties, property owners can face fines of $150 per day for the first 10 days and $500 per day thereafter. RRIO noncompliance can also affect a landlord’s ability to pursue an eviction. Failure to register a rental property as required under RRIO may be raised by a tenant as a defense in an eviction case, making proper registration an important part of protecting an owner’s ability to enforce the lease and regain possession when legally permitted.

First-in-Time Screening Law

Seattle's First-in-Time ordinance establishes a specific process landlords must follow when accepting and screening rental applications. Before the application stage, landlords must provide prospective tenants with their minimum screening criteria and list the documentation applicants must provide.

Once applications are submitted, landlords must date and time-stamp them in the order received, and screen completed applications one at a time in chronological order. The rental must be offered to the first applicant who submits a complete application and meets the published screening criteria. Landlords cannot skip that qualified applicant in favor of someone who applied later.

The law also includes specific timing requirements during screening. An applicant must receive at least 72 hours to provide additional information when required for an otherwise complete application. Once a rental agreement is offered, the applicant has 48 hours to respond before the landlord can move on to the next applicant in line.

The Seattle Office for Civil Rights administers and enforces First-in-Time requirements. A consistent, documented screening process helps property owners reduce the risk of unequal treatment during applicant screening and the fair housing concerns that can result.

Just Cause Eviction Requirements

Seattle landlords cannot end a tenancy without a legally recognized reason under the City’s Just Cause Eviction Ordinance. As the City of Seattle explains, “The Just Cause Eviction Ordinance, passed in 1980, prevents landlords from arbitrarily ending a rental agreement. The Just Cause Eviction Ordinance applies to month-to-month renters, renters with verbal agreements, and renters with expiring term leases.”

This means a landlord cannot simply decide not to renew an expiring lease. The reason for ending the tenancy must fall within one of the causes recognized by the ordinance, including a tenant’s failure to pay rent, certain lease violations, an owner or qualifying family member moving into the property, and plans to substantially rehabilitate, demolish, or change the use of the property. The full list is available here, in 22.205.010 of the Seattle Municipal Code.

Landlords must also follow the notice and documentation requirements that apply to the specific just cause being used. Missing a required step or failing to properly establish the reason for terminating the tenancy can affect the landlord’s ability to proceed with an eviction, making careful documentation important throughout the tenancy.

Rent Increase Notice Rules

Seattle landlords must follow specific requirements when increasing rent or other housing costs. According to Seattle law, as of May 7, 2025, annual rent increases are limited to 7% plus the Consumer Price Index (CPI), up to a maximum increase of 10% per year. Housing costs can increase only when a fixed-term lease is up for renewal or when the rental agreement is month-to-month. Landlords must also provide at least 180 days' advance written notice before an increase in housing costs can take effect.

Written notices must meet the City’s requirements for both content and delivery, including required language directing tenants to resources for understanding the notice and their renter rights. For the specific language that must be included, visit the City of Seattle’s webpage on issuing notices.

Landlords also cannot increase housing costs in retaliation against a tenant for exercising a legal right. Property owners should maintain copies of notices and other tenant communications to document compliance throughout the tenancy.

Security Deposit & Move-In Documentation

Seattle landlords who collect a security deposit must follow specific requirements for both the amount collected and how it is documented. Under Seattle’s move-in charge requirements, the total amount of the security deposit and move-in fees combined cannot exceed one month’s rent.

The rental agreement must describe the deposit, and landlords must provide a written checklist documenting the rental's condition at move-in. Both the landlord and tenant must sign the checklist.

After the tenant moves out, landlords must return the security deposit and provide a statement detailing any amounts withheld for damages — not including normal wear and tear — within 30 days, as required under RCW 59.18.280. Keeping detailed move-in documentation is especially important when deductions are made because it provides a record of the property's condition at the beginning of the tenancy.

Following these requirements, along with conducting thorough move-out inspections, helps landlords properly document security deposit deductions and reduce the risk of move-out disputes.

Entry Notice Requirements

Seattle landlords must provide advance notice before entering an occupied rental unit. As the City of Seattle explains, state and City law require both landlords and renters to be reasonable about seeking and granting access to a rental unit.

Under RCW 59.18.150, landlords must provide at least two days' written notice before entering for purposes such as inspections, repairs, alterations, improvements, or services. For showings to prospective or actual purchasers or tenants, landlords must provide at least one day's notice. The notice must include the date and time of entry, or a specified time window, along with a phone number the tenant can use to object or request a different time.

Frequently Asked Questions About Seattle Landlord Laws

What are the most important Seattle landlord laws to know in 2026?

Seattle landlords must comply with a wide range of Washington State and City of Seattle requirements. Some key laws covered in this guide include RRIO registration and inspections, First-in-Time tenant screening, Just Cause eviction protections, rent increase limits and notices, security deposit requirements, and rules for entering an occupied rental.

How much notice must a Seattle landlord give before raising rent?

Seattle landlords must provide at least 180 days' advance written notice before increasing rent or other housing costs. The notice must also meet the City's content and delivery requirements.

Can a Seattle landlord choose not to renew a lease?

No. Seattle's Just Cause Eviction Ordinance prevents landlords from arbitrarily ending a rental agreement and applies to renters with expiring term leases as well as month-to-month renters and renters with verbal agreements. A landlord must have a legally recognized just cause to end the tenancy.

What happens if my rental isn't RRIO-registered?

Seattle rental property owners must keep required RRIO registrations and inspections current. Overdue registrations and inspections are subject to a $52.50 late fee, and continued noncompliance can result in a Notice of Violation and civil penalties. RRIO noncompliance can also affect a landlord's ability to pursue the eviction process.

Does every rental property in Seattle need to be registered with RRIO?

Seattle requires rental properties covered by the Rental Registration and Inspection Ordinance to be registered with the City. The City provides specific exemptions, so property owners should confirm whether their rental falls under RRIO requirements before leasing it.

What are Seattle's security deposit rules for landlords?

The security deposit and move-in fees combined cannot exceed one month's rent. If a landlord collects a deposit, the rental agreement must describe it, and both parties must sign a written move-in checklist documenting the property's condition. After move-out, the landlord must return the deposit and provide a statement of any amounts withheld within 30 days.

How does Seattle's First-in-Time law work?

Seattle landlords must publish their screening criteria before accepting applications and process completed applications in the order received. The rental must be offered to the first applicant who submits a complete application and meets the published criteria. A landlord cannot skip a qualified applicant to select someone who applied later.

How much notice is required before a Seattle landlord can enter a rental unit?

Landlords must provide at least two days' written notice before entering for inspections, repairs, improvements, or services. For showings to prospective or actual purchasers or tenants, landlords must provide at least one day's notice. Landlords can enter without tenant consent in an emergency or when the property has been abandoned.

Stay Compliant and Protect Your Seattle Rental Investment

Understanding Seattle landlord laws is an important part of protecting your rental property and avoiding costly compliance issues. From RRIO registration and tenant screening to rent increases, security deposits, property access, and lease terminations, landlords need processes that account for both Washington State law and Seattle-specific requirements.

Real Property Associates, Inc. has helped Seattle property owners manage their rentals for more than 30 years. Our local team understands the requirements landlords face and can help manage the day-to-day responsibilities of owning a rental property in Seattle.

Not sure where your property stands with Seattle’s current rental requirements? Get a free rental analysis to discuss your property, its rental potential, and how professional management can help you move forward with confidence.