Airbnb and short-term rental laws and regulations in Washington State: 2026

The listing goes live on a Tuesday. By Thursday, a guest has booked a long weekend at your Spokane bungalow or your Bellingham waterfront cottage, and the excitement of that first reservation can make it easy to overlook the city permit queue and your insurer's treatment of short-term guests. State registration can add another delay. That gap between "live on the platform" and "compliant" is where most new Washington hosts get caught: a permit delay can cost you the booking, and a denied claim can wipe out a season of rental income.

Before your first guest checks in, register with the Department of Revenue if you need a state or local endorsement, if you must collect sales tax, or if you expect to gross at least $12,000 annually; most Washington short-term rental operators meet at least one of those criteria. Washington also requires you to carry $1 million in aggregate liability coverage, or run every transaction through a platform that provides equal or greater primary liability coverage. Most cities layer a permit or license on top of those state requirements, and Vancouver caps active permits citywide, so a late application can cost you the permit outright.

What counts as a short-term rental in Washington state

RCW 64.37.010 defines a short-term rental as "a lodging use, that is not a hotel or motel or bed and breakfast, in which a dwelling unit, or portion thereof, that is offered or provided to a guest by a short-term rental operator for a fee for fewer than thirty consecutive nights." The 30-night line is the trigger. Whole houses, condos, ADUs, and single rooms all qualify if guests stay fewer than 30 consecutive nights for a fee.

These situations fall outside the definition:

• A dwelling where the owner lives for at least six months of the calendar year and rents fewer than three rooms at any one time, or a unit the same person uses for 30 or more consecutive nights
• Temporary housing that a charitable organization or government entity provides for people receiving treatment for trauma, injury, or disease

If you occupy the home for at least six months of the calendar year and rent fewer than three rooms at any one time, the state chapter doesn't apply to you. If you rent out an entire second property by the night, all of it does.

How Washington's short-term rental rules work

Washington's short-term rental rules operate on two layers. Chapter 64.37 RCW sets a statewide floor covering registration, taxes, guest safety, and landlord liability insurance. Cities and counties then add local licensing and land-use restrictions, including unit caps. You have to clear both layers before your first guest checks in.

State business license and UBI number

You must register with DOR if you need a state or local endorsement, if you must collect sales tax, or if you gross at least $12,000 annually. Most Washington STR operators meet at least one criterion. Start with the Department of Revenue; you can request city endorsements on the same application. DOR requires a business license application from any business that meets one of those criteria, and after approving the application it assigns a nine-digit Unified Business Identifier (UBI), which functions as both your tax registration and business license number.

The state application fee is $50 for a new business's first location, and online applications process in roughly 10 business days; city or state endorsements add two to three weeks. City-specific STR regulatory licenses, sometimes called a transient accommodation license, are separate from and additional to any city endorsement on your state license. Tacoma, for example, requires both a city business license and a Transient Accommodation License ($75) when renting three or more individual rooms, which illustrates how these credentials stack on top of one another.

Taxes short-term rental hosts owe

Washington taxes STR income at three points, and the platforms handle only two of them:

• Tax | Rate | Who handles it
• Retail sales tax | 6.5% state; 7.0–9.6% combined with local | Airbnb and Vrbo collect and remit on platform bookings
• Lodging taxes (special hotel/motel, convention and trade center, tourism promotion) | Varies by location; Seattle's total lodging tax is 15.70% for lodging with 59 or fewer units | Platforms collect and remit on platform bookings
• Retailing B&O tax | 0.471% of gross receipts | You file directly with DOR

Seattle's 15.70% figure comes from the Q2 2026 DOR lodging flyer. Airbnb has collected and remitted Washington sales and lodging taxes since October 15, 2015, and Vrbo has done the same since July 1, 2018 for stays under 30 nights. That doesn't end your DOR relationship. If you meet a registration threshold, you must still report all rental income under the Retailing and Retail Sales Tax classifications, claim the "Gross Sales Collected by Facilitator" deduction for what the platform collected, and pay the 0.471% B&O tax on gross receipts. The fees and commissions a platform keeps are not deductible. On direct bookings and bookings you make outside the platform's system, you carry the full tax burden. Airbnb also charges a $4-per-night Seattle STR platform fee on reservations of 28 nights or shorter.

Safety and posting requirements under RCW 64.37

RCW 64.37.030 requires every operator to give guests contact information for someone available to respond during the stay, comply with the state's carbon monoxide alarm rules under RCW 19.27.530, and post the following in a conspicuous place inside each unit:

• The rental's street address
• Emergency contact information for police, fire, or emergency medical services
• A floor plan indicating fire exits and escape routes
• Maximum occupancy limits
• Operator or designated contact information

CO alarms must go outside each sleeping area and on each level of the dwelling, and inside bedrooms that contain fuel-burning appliances, per WAC 51-51-0315. The State Building Code (WAC 51-51-0314) sets smoke alarm requirements, and people also commonly call these devices smoke detectors: install one in each sleeping room and outside each sleeping area, put one on every story, and interconnect them so one alarm triggers all. Chapter 64.37 says nothing about fire extinguishers, though some local ordinances and platform policies require them. For safety violations, the city or county attorney issues a warning letter on the first offense, and a subsequent violation is a class 2 civil infraction.

Liability insurance requirements

A homeowners policy will not cover commercial hosting, so Hosts across Washington rely on short-term rental insurance in Washington.

RCW 64.37.050 states: "A short-term rental operator must maintain primary liability insurance to cover the short-term rental dwelling unit in the aggregate of not less than one million dollars or conduct each short-term rental transaction through a platform that provides equal or greater primary liability insurance coverage." The $1 million is an aggregate cap, so a single serious guest injury early in the policy year can exhaust it.

Washington lawmakers created two compliance paths in RCW 64.37.050: carry the coverage yourself, or run every transaction through a platform that provides equal or greater primary liability insurance. The second path has drawn regulatory scrutiny. On May 16, 2023, the Washington Insurance Commissioner fined Airbnb $20,000 for acting as an unauthorized insurer through its Host Damage Protection program and required the company to obtain a Washington surplus-lines policy. No OIC source expressly confirms that AirCover categorically satisfies RCW 64.37.050, which leaves hosts relying on it alone in a gray area.

Local permit rules in Seattle, Vancouver, and Olympia

Each city adds its own licensing rules and procedures, including caps, on top of the state requirements:

• City | Required permits | Caps and occupancy rules | Neighbor notification | Where to apply
• Seattle | Business License Tax Certificate plus STR regulatory license, $75 per unit per year | One unit, or two if one is your primary residence; non-primary units limited to 90 nights per 12 months and must be registered with RRIO | None required | Seattle Services Portal (license); FileLocal portal (tax certificate)
• Vancouver | State license with city endorsement, city business license ($347 base for gross income over $50,000), and STR permit ($250) | 870 active permits citywide, first come, first served; no owner-occupancy requirement; permits expire when ownership changes | Written notice to abutting and adjacent owners, with an affidavit of mailing as proof | City of Vancouver online STR permit application
• Olympia | Business license (homestay); business license plus city STR permit (vacation rental) | Two vacation rental units per owner citywide; homestays do not count toward the cap | The city's published materials do not address it | Olympia online permit portal

A homestay in Olympia means renting rooms within a dwelling where the owner or a permanent resident lives on-site, including whenever a guest is present; it needs only a business license. A vacation rental is an entire unit with no permanent residents, and it requires the city STR permit, renewed every two years, plus a designated contact available 24/7 who lives in Thurston County or within 15 miles of the rental. Full permit details sit on Olympia's short-term rental page, Seattle's regulations page, and Vancouver's short-term rentals page.

Zoning, primary residence, and owner-occupancy rules

Your parcel's zoning affects eligibility, so verify it before applying:

• City | Where local law prohibits STRs | How to verify
• Seattle | Over water and in shoreline areas, live-work units, dwellings established as caretaker's quarters, and non-dwelling spaces such as RVs, tents, garages, and boats | Check your parcel on the SDCI Property Information Map before applying
• Vancouver | IL and IH industrial districts, accessory structures, and units receiving Multifamily Tax Exemption benefits | City-issued zoning verification letters arrive within 14 days of a complete application
• Olympia | The city names no districts; it regulates STRs through the use tables at OMC 18.04.060(L) | The city recommends a conversation with a planner for anything unusual

A major revision of Vancouver's VMC Title 20 took effect July 31, 2026, so before relying on the zoning categories above, confirm the current STR use-table provisions in the current clerk edition.

Primary-residence rules add another gate in Seattle. The city defines primary residence as your usual place of return, documented with a driver's license, voter registration, vehicle registration, or other evidence the city accepts, and it requires two supporting documents at application or renewal. A person may have only one primary residence. Seattle's second-unit allowance and Olympia's homestay category both turn on where the operator lives, which is why owners who reside within their rental property face a different rule set.

An HOA can still bar you from operating. In Wilkinson v. Chiwawa Communities Association (2014), the Washington Supreme Court held that short-term rentals do not violate covenants barring commercial use or restricting lots to single-family residential use, and that a simple majority of owners cannot add new rental restrictions inconsistent with the original plan of development. The court also noted that an express original covenant prohibiting STRs remains enforceable, so read your CC&Rs before closing.

Seattle hosts who documented STR activity before September 30, 2017 and kept continuous business licensing may run up to two legacy units in the Greater Seattle zone, neither of them a primary residence. Downtown legacy guidance conflicts with the municipal code, so ask the city for a written determination; legacy status is non-transferable and ends permanently when the property changes hands.

Platform obligations for Airbnb and Vrbo under Washington law

Platforms carry their own statutory duties, separate from yours. Under RCW 64.37.040, a platform must register with the Department of Revenue, inform operators of their tax responsibilities, inform them of the chapter's safety requirements, and provide written notice that the operator's personal insurance policy might not provide liability protection, defense costs, or first-party coverage during STR stays. That last notice exists because the coverage gap is common enough that the legislature made platforms warn every host about it.

Platforms must send each host a gross sales report for the prior month within 15 calendar days of month-end. Seattle adds a platform license requirement, and a platform operating there must refuse booking services to any operator who hasn't submitted a license application or included a valid license number in the listing. Your B&O filing and DOR registration stay with you regardless of what the platform remits.

Penalties for operating without a permit

State-level penalties under RCW 64.37 are narrower than most hosts assume. The warning-letter-then-infraction sequence applies only to consumer safety violations: a first offense draws a warning letter from the city or county attorney, and a subsequent offense is a class 2 civil infraction carrying a maximum $125 fine plus a mandatory 70% public safety assessment that courts cannot waive. Licensing and permit enforcement happens at the local level, and local fines run far higher.

Seattle fines unlicensed operators $500 for a first violation and $1,000 for each subsequent one, with each day counting as a separate violation, plus $150 to $500 per day for related land use or housing code violations. San Juan County assesses a base penalty of $2,300 for advertising or operating an unpermitted vacation rental, plus $100 per day of continued advertising after a notice of violation.

How Steadily covers Washington short-term rentals

Steadily insures short-term rentals in Washington, naming Airbnb and Vrbo use as a covered occupancy, so your listing isn't an undisclosed business use on the policy. The Washington OIC states that most personal homeowner policies do not cover losses during sharing-economy activities such as renting on Airbnb or Vrbo, and advises that a separate business policy may be necessary.

Host Liability Insurance provides $1 million per Airbnb stay. Host Damage Protection is a $3 million reimbursement program rather than an insurance contract; it applies only to Airbnb bookings and excludes natural disasters, and it provides no property coverage between stays. A host who also takes Vrbo or direct bookings has no AirCover protection on those transactions at all, and the statute's platform path applies per transaction.

Liability limits run from $100,000 to $1 million and above per occurrence, so you can hold your own coverage instead of depending on platform protection booking by booking; confirm with your agent that the policy aggregate meets the $1 million statutory floor. Get a quote in minutes at quote.steadily.com.

What's next for Washington short-term rental laws

HB 2559, the 2026 session's STR bill, died in committee. HB 2559 would have let local governments impose a special excise tax of up to 4% on STR lodging to fund affordable housing; it stalled in House Appropriations after February 3, 2026 and missed the fiscal-committee cutoff before the session ended March 12. The bill contained no permit cap or licensing quota.

With the statewide framework stalled, local governments keep moving on their own. Jefferson County capped STRs at 4% of unincorporated housing units in April 2025, and Friday Harbor imposed a six-month moratorium on transient rental permits in December 2025. MRSC counted 21 Washington local governments adopting STR ordinances since 2021, so your city ordinance is the rule most likely to change on you: watch your local council agenda. HB 1080, effective July 1, 2025, requires lodging providers to include all fees in the rate they advertise.

Frequently asked questions about Washington short-term rental laws

These answers summarize the licensing, tax, safety, insurance, and unit-limit rules Washington hosts ask about most often.

What legally counts as a short-term rental in Washington?

Any dwelling unit, or portion of one, that an operator rents to guests for a fee for fewer than 30 consecutive nights, excluding hotels, motels, and bed and breakfasts. State law exempts owner-occupied homes when the owner lives there at least six months a year and rents fewer than three rooms at a time.

What licenses do I need before my first booking?

Register with the Department of Revenue and obtain a state business license and UBI number if you need a state or local endorsement, if you must collect sales tax, or if you gross at least $12,000 annually. Most STR operators meet at least one criterion. You also need city credentials: Seattle's Business License Tax Certificate and $75-per-unit license, Vancouver's business license and $250 permit, and Olympia's business license plus STR permit for whole units.

Do I still owe taxes if Airbnb collects them for me?

Yes. Platforms remit sales and lodging taxes on platform bookings, but if you meet a registration threshold, you register with DOR, report gross receipts, pay the 0.471% Retailing B&O tax, and cover taxes on direct or off-platform bookings yourself.

What safety equipment does state law require?

CO alarms must go outside sleeping areas and on every level, and inside bedrooms with fuel-burning appliances. Post the address, emergency contacts, a fire-exit floor plan, occupancy limits, and contact information. Smoke alarms come from the State Building Code; RCW 64.37 requires no extinguishers.

What's the minimum liability insurance?

You must carry $1 million in aggregate primary liability coverage or run every transaction through a platform providing equal or greater primary liability insurance. The requirement is an aggregate cap, so one large claim can use it up.

How do city rules differ from state rules?

The state sets registration, tax, safety, and insurance requirements; cities add licensing and land-use rules, including unit caps, plus their own fine schedules. Vancouver caps active permits citywide at 870, while Olympia limits each owner to two vacation rental units.

What happens if I operate without a permit?

Local governments impose the largest fines. Seattle charges $500 for a first violation and $1,000 for each subsequent one, per day; San Juan County's base penalty is $2,300; and state infractions ($125 plus a 70% assessment, after a warning letter) apply only to safety violations.

How many units can one owner rent?

Seattle allows one unit, or two if one is your primary residence, with legacy exceptions for pre-2017 operators. Olympia allows two vacation rentals per owner with no cap on homestays. Vancouver's published rules set no per-owner limit, but the city caps total active permits at 870.