Key Takeaways
- Seattle requires 180 days’ notice before any rent increase — the longest notice period in the United States
- At increases of 10% or more within 12 months, landlords must pay EDRA relocation assistance equal to 3x current monthly housing cost
- Seattle’s winter eviction ban (Dec 1 – Mar 1) prohibits most evictions in buildings with 4+ units for low-to-moderate income tenants
- Seattle’s Just Cause Eviction Ordinance predates and exceeds the state-level protections under HB 1217
- Comparison: Seattle 180d vs Tacoma 210d vs Olympia 120–180d vs WA state 90d vs California 30d
Why Seattle’s 180-Day Rule Matters
Seattle requires landlords to provide 180 days’ written notice before any rent increase takes effect. That is six full months — longer than any other city in the United States. By comparison, Washington state requires 90 days, California requires 30 days, and most states require just 30 days for month-to-month tenancies.
This means if you want a rent increase to take effect on January 1, you need to deliver the notice no later than July 4 of the prior year. For landlords accustomed to shorter timelines, this planning horizon is a fundamental shift in how you manage your rental business.
The 180-day rule applies to all residential rental properties in Seattle, regardless of whether they are exempt from the state rent cap under HB 1217. Even if your building is new construction within the 12-year exemption window, you still must provide 180 days’ notice in Seattle.
The Legal Basis: Seattle Municipal Code
Seattle’s notice requirement is codified in Seattle Municipal Code Chapter 7.24, which governs the city’s residential landlord-tenant regulations. The 180-day notice period was adopted as part of Seattle’s broader tenant protection framework, which includes just cause eviction, relocation assistance, and the winter eviction ban.
The notice must be in writing and include:
- The current rent amount
- The proposed new rent amount
- The effective date of the increase
- The percentage increase
- Information about tenant resources and rights
In addition to the city requirements, landlords must also comply with the standardized notice form required by HB 1217 at the state level. In practice, this means Seattle landlords need to satisfy both sets of requirements in a single notice.
How EDRA Relocation Assistance Works
Seattle’s Economic Displacement Relocation Assistance (EDRA) is triggered when a landlord increases rent by 10% or more within a 12-month period. When EDRA applies, the landlord must pay the tenant relocation assistance equal to three times the current monthly housing cost.
The “current monthly housing cost” includes not just rent, but any utilities included in the lease agreement. For a tenant paying $2,000/month in rent with $200/month in included utilities, the EDRA payment would be:
$2,200 (monthly housing cost) x 3 = $6,600 in relocation assistance
EDRA eligibility is based on the tenant’s income. Tenants must be at or below certain income thresholds to qualify for relocation assistance. However, the burden of determining eligibility and making the payment falls on the landlord. If you increase rent by 10% or more and the tenant qualifies, you owe the EDRA payment regardless of whether you intended to trigger it.
For a complete breakdown of EDRA calculations, eligibility thresholds, and how to avoid triggering the requirement, see our dedicated guide: Seattle EDRA: When a Rent Increase Triggers $6,000+ in Relocation Payments.
EDRA Comparison Across Washington Cities
| City | EDRA Trigger | Payment Amount | Income Eligibility |
|---|---|---|---|
| Seattle | 10%+ increase within 12 months | 3x current monthly housing cost | Income-eligible tenants |
| Tacoma | 5%+ increase | 3x current monthly rent | Income-eligible tenants |
| Olympia | 7%+ increase | 2.5x current monthly rent | Income-eligible tenants |
Tacoma’s EDRA threshold is the most aggressive in the state, triggering at just 5%. This means a Tacoma landlord raising rent from $1,500 to $1,575 (a $75/month increase) could owe up to $4,500 in relocation assistance. Seattle’s 10% threshold gives landlords more room, but the 3x multiplier means the payments are substantial when triggered.
The Winter Eviction Ban
Seattle’s winter eviction ban prohibits most evictions between December 1 and March 1 in buildings with four or more units for tenants who qualify as low-to-moderate income. This ban applies to no-fault evictions and certain lease non-renewals — it does not protect tenants who are being evicted for cause (nonpayment, criminal activity, etc.).
The practical impact: if you need to issue a no-fault eviction or decline to renew a lease, you need to complete the process before December 1 or wait until March 1. Combined with the 180-day notice period for rent increases, this creates a narrow window for certain landlord actions during the fall and winter months.
Winter Ban Key Details
- Applies to: Buildings with 4+ units in Seattle
- Duration: December 1 through March 1
- Protected tenants: Low-to-moderate income (based on Seattle AMI thresholds)
- Exceptions: For-cause evictions (nonpayment, criminal activity, nuisance, lease violations)
- Does not apply to: Buildings with fewer than 4 units, market-rate tenants above income thresholds
Seattle’s Just Cause Eviction Ordinance
Seattle’s Just Cause Eviction Ordinance (SMC 22.206.160(C)) was adopted in 1980 — decades before Washington passed statewide just cause protections. The Seattle ordinance is more restrictive than the state law in several ways:
- It covers all tenancies from day one — there is no 12-month waiting period as under some interpretations of state law
- It includes additional enumerated causes specific to Seattle
- It requires relocation assistance for no-fault evictions at amounts set by the city
- It prohibits retaliatory evictions more broadly than state law
For Seattle landlords, the city ordinance is the operative law. Where the state law is stricter on a specific point, you follow the state law. Where the city ordinance is stricter, you follow the city ordinance. In practice, Seattle’s framework is almost always the controlling standard.
Practical Timeline for Seattle Landlords
Given the 180-day notice requirement, here is what a typical rent increase timeline looks like for a Seattle landlord:
| Step | Timeline | Action |
|---|---|---|
| 1 | Month 1 (e.g., January) | Decide on target increase effective date (e.g., July 1) |
| 2 | Check current cap rate | Verify the WA Department of Commerce published maximum (9.683% for 2026) |
| 3 | Calculate EDRA exposure | If increase is 10%+ within 12 months, calculate 3x monthly housing cost |
| 4 | Prepare notice | Complete the standardized HB 1217 form with Seattle-specific disclosures |
| 5 | Deliver notice at least 180 days before effective date | For July 1 effective: deliver by January 2 at the latest |
| 6 | Retain proof of delivery | Certified mail, personal delivery with witness, or other verifiable method |
| 7 | If EDRA triggered | Pay relocation assistance before the increase takes effect |
| 8 | Increase effective date | New rent applies on the date specified in the notice |
Planning Example
You want to increase rent on a Seattle unit from $2,000 to $2,150 (7.5% increase) effective January 1, 2027.
Step 1: Calculate — 7.5% is under the 9.683% cap. Compliant.
Step 2: Check EDRA — 7.5% is under the 10% EDRA trigger. No relocation payment required.
Step 3: Calculate notice deadline — 180 days before January 1 = July 5, 2026.
Step 4: Deliver the standardized notice form by July 5, 2026.
Step 5: New rent of $2,150 takes effect January 1, 2027.
Notice Period Comparison: Washington Cities and Beyond
Washington is unique in having dramatically different notice requirements depending on where your property is located. Here is the complete comparison:
| Jurisdiction | Notice Period | EDRA Trigger | EDRA Amount |
|---|---|---|---|
| Seattle, WA | 180 days | 10%+ within 12 months | 3x monthly housing cost |
| Tacoma, WA | 120–210 days (tiered by increase amount) | 5%+ increase | 3x monthly rent |
| Olympia, WA | 120–180 days (tiered) | 7%+ increase | 2.5x monthly rent |
| Washington State (HB 1217) | 90 days | N/A at state level | N/A at state level |
| California (AB 1482) | 30 days (under 10%), 90 days (over 10%) | N/A | N/A |
| Oregon | 90 days | N/A | N/A |
| Most other U.S. states | 30 days | N/A | N/A |
Tacoma’s tiered notice system is worth highlighting. For increases under 5%, landlords must provide 120 days’ notice. For increases of 5% or more, the notice period extends to 210 days — exceeding even Seattle’s 180-day requirement. This makes Tacoma the city with the longest potential notice period in the country for larger rent increases.
What Happens If You Don’t Comply
Failing to provide adequate notice in Seattle can have serious consequences:
- The rent increase is void. An increase served with inadequate notice is unenforceable. The tenant can continue paying the prior rent amount.
- EDRA liability. If you trigger EDRA and don’t pay, the tenant can recover the relocation assistance amount plus additional damages.
- Wrongful eviction claims. Attempting to evict a tenant for not paying an improperly noticed rent increase exposes you to wrongful eviction liability.
- Attorney’s fees. Under Washington’s Residential Landlord-Tenant Act, the prevailing party in a landlord-tenant dispute can recover attorney’s fees.
Tips for Multi-City Washington Landlords
If you own properties in multiple Washington cities, you are effectively managing under multiple regulatory regimes simultaneously. Here are strategies to stay compliant:
- Default to the strictest rule. If you own properties in Seattle and Spokane, adopt the 180-day notice period as your standard. You’ll be compliant everywhere.
- Track EDRA thresholds by city. Tacoma triggers at 5%, Olympia at 7%, Seattle at 10%. A 6% increase is EDRA-free in Seattle and Olympia but triggers a payment in Tacoma.
- Use property management software that tracks local rules. LeaseBase tracks city-specific compliance requirements for each property, including notice periods and EDRA thresholds.
- Calendar your notice deadlines. With a 180-day lead time in Seattle, you need to start planning rent increases six months in advance. Set annual calendar reminders.
- Build EDRA into your financial models. When evaluating whether to increase rent above the EDRA threshold, calculate the total cost including the relocation payment. A 10% increase that triggers $6,000+ in EDRA may not be worth the additional monthly revenue.
“Six months is a lifetime in property management. In the time it takes for a Seattle rent increase to become effective, a California landlord could have issued and implemented two separate increases. The 180-day rule doesn’t just change your timeline — it changes your entire planning cadence.”
— Rachid Abadli, Founder & CEO at LeaseBase
Frequently Asked Questions
Does the 180-day rule apply to all properties in Seattle?
Yes. The 180-day notice period applies to all residential rental properties in Seattle, regardless of size, type, or whether they are exempt from the state rent cap under HB 1217. Even new construction within the 12-year exemption window must provide 180 days’ notice for rent increases in Seattle.
Can I avoid the 180-day rule by using a fixed-term lease?
No. The notice requirement applies to all rent increases, whether the tenancy is month-to-month or on a fixed-term lease. If you are renewing a lease with a higher rent, you must provide 180 days’ notice of the new rent amount.
What if my tenant agrees to a shorter notice period?
The 180-day requirement cannot be waived by the tenant. Even with a written agreement to accept shorter notice, the legal requirement stands. Any rent increase served with less than 180 days’ notice is unenforceable.
How does the 180-day rule interact with the HB 1217 cap?
They operate simultaneously. HB 1217 limits how much you can increase rent (9.683% for 2026). Seattle’s rule determines how much notice you must provide (180 days). You must comply with both. A rent increase that satisfies the cap but is served with only 90 days’ notice is invalid in Seattle.
Does EDRA apply to every tenant?
No. EDRA applies to income-eligible tenants at or below certain income thresholds set by the city. However, as the landlord, you are responsible for determining eligibility and making the payment. If in doubt, assume EDRA applies and budget accordingly.
Stay Ahead of Seattle’s Rules
Seattle’s 180-day notice requirement, combined with EDRA, the winter eviction ban, and just cause protections, makes it one of the most tenant-protective cities in the country. Compliance requires planning further ahead than landlords in any other U.S. market.
LeaseBase tracks all Seattle-specific requirements automatically, including 180-day notice deadlines, EDRA threshold calculations, and winter ban windows. Set it once and get alerts when your notice window opens.