Snohomish County, WA Business License Guide

First question: which government controls the address?

Snohomish County contains incorporated cities and towns plus a large unincorporated area. The county’s official city list includes Arlington, Bothell, Brier, Darrington, Edmonds, Everett, Gold Bar, Granite Falls, Index, Lake Stevens, Lynnwood, Marysville, Mill Creek, Monroe, Mountlake Terrace, Mukilteo, Snohomish, Stanwood, Sultan, and Woodway.

If the parcel is inside one of those municipalities, that city’s business-license, zoning, building, sign, and home-occupation rules normally control those local issues. If the parcel is outside city and town limits, Snohomish County Planning and Development Services, or PDS, is the local land-use and permitting agency.

Bothell is an especially useful example. The city itself straddles King and Snohomish counties. A Bothell city license is still a City of Bothell matter, but county-controlled functions can depend on which side of the county line the parcel occupies.

For the basic distinction between government layers, see BLG’s city license vs. county license vs. state registration guide.

Unincorporated Snohomish County: the county license is narrow

The Snohomish County Business Licensing page uses a two-part test. A county business license is generally required only when the business is a regulated Title 6 business and it operates in unincorporated Snohomish County.

Current categories include adult businesses, adult entertainment dance studios, adult panoramas, bathhouses, pawnbrokers, and secondhand dealers. Use the county’s regulated business types page for the exact license. The county tells applicants to obtain a Washington UBI before requesting its application.

Snohomish County’s Title 6 licenses are handled directly by the county. They are not a normal My DOR county endorsement; Washington’s current Business License Application lists Asotin and Franklin as the county endorsements available in that workflow.

No county business license does not mean no county permit

An ordinary business may not need a Title 6 license but can still need zoning or site approvals. PDS handles land use, commercial building permits, tenant improvements, signs, inspections, occupancy records, and other development approvals for unincorporated property.

Use the PDS Permit Portal guidance to submit and track applications. The current portal replaced the county’s previous online permitting system in December 2024. For a storefront, restaurant, warehouse, or change in building use, review the commercial building permit guidance before work begins.

Animal businesses have a separate path

Snohomish County Animal Services licenses commercial kennels, boarding operations, grooming businesses, pet shops, animal shelters, and certain other animal operations in unincorporated Snohomish County. Use the animal business licensing page. Inside a city, use that city’s animal-services route.

Inside Everett, Lynnwood, Marysville, Snohomish, and other cities

Inside an incorporated municipality, the city or town controls its local business-license system. Washington’s city endorsement directory includes many Snohomish County cities, including Arlington, Bothell, Brier, Edmonds, Lake Stevens, Lynnwood, Marysville, Mill Creek, Monroe, Mountlake Terrace, Mukilteo, Snohomish, Stanwood, and Sultan.

Everett uses FileLocal

Everett requires a city business license and currently directs applicants to FileLocal through the city’s Business License page. Everett also has a local B&O tax. Its tax page says certain “service and other” classifications began reporting as retailing on January 1, 2026. Everett’s 2026 mobile-food ordinance also pairs a city business license with a current Snohomish County Health Department food permit.

Lynnwood uses the state endorsement system

Lynnwood routes general business licensing through Washington’s Business Licensing Service and says it does not levy a B&O tax. Its current licensing page also notes business-license fee increases effective March 1, 2026.

Snohomish and Bothell show why boundaries matter

The City of Snohomish requires a city endorsement and tells applicants to check zoning before applying. Bothell also uses the state endorsement system, but the city straddles King and Snohomish counties. The city license stays a Bothell matter; county health, assessor, or other county functions can depend on the parcel’s county.

Home businesses: zoning follows the parcel

A home business does not get one countywide rule just because the owner lives in Snohomish County. In an incorporated city, use that city’s home-occupation and zoning standards. In unincorporated Snohomish County, PDS applies the county development code and home-occupation standards.

For an unincorporated property, start with the PDS Map Portal to identify zoning and property information. Then use the county’s home-occupation and code-enforcement guidance, which routes residential-business questions to PDS and its Home Occupations Assistance Bulletin.

Expect the answer to depend on the real operating model: whether customers visit, whether nonresident employees work at the home, whether inventory or equipment is stored outside, whether commercial vehicles are present, whether there is signage, and whether noise, traffic, deliveries, or another impact changes the use. A business license or UBI does not establish that the activity is allowed at the property.

For the general concept, BLG’s home occupation permit guide explains why zoning approval and a business license are different documents.

Food businesses: the county health layer can apply inside cities

Food is one of the most important exceptions to a simple “city or county” split. The Snohomish County Health Department Food Permits page requires a food permit for food service establishments and separates permit paths by establishment type. Its examples include restaurants, grocery stores, taverns, bakeries, caterers, concession stands, temporary food establishments, mobile food units, and vending operations.

A permanent restaurant follows the permanent food-establishment process. A food truck, trailer, or cart follows the mobile food unit process. Temporary event food has its own permit path. Do not use the restaurant checklist for a mobile or temporary operation just because all three sell food.

The health permit does not replace the local business-license and land-use layer. Everett’s 2026 mobile-food guidance expressly pairs a City of Everett business license with the Snohomish County Health Department permit. In unincorporated territory, a food operation may instead need PDS zoning, building, fire, septic, or site approvals along with the Health Department permit.

The Health Department is also running a multi-year Health Code update project in 2026. As of October 2, 2026, some food plan-review changes were still being developed rather than treated as final current requirements. Use the live Health Department permit pages when applying and do not rely on a proposal as though it were already effective.

Business equipment: Snohomish County Assessor is a countywide step

Business personal property is different from a business license. The Snohomish County Assessor’s Business Personal Property page says businesses in the county must report taxable equipment and other business personal property each year for assessment under Washington law.

This is a county assessor function, including for businesses located inside incorporated cities. The Assessor requires its own listing form or county eFile system. The online eFile system can close outside the filing window, so use the current page for the active filing method rather than assuming online filing is always open.

Washington registration, tax, entity, and trade-name steps

The Department of Revenue’s Business Licensing Service is the state hub. DOR says registration is required when any listed trigger applies, including needing a city or state endorsement, using a business name other than the owner’s full legal name, planning to hire employees within 90 days, collecting sales tax, having gross income of at least $12,000 per year, or owing a DOR-administered tax or fee.

Use the Business License Application for the UBI, tax registration, and many state and city endorsements. DOR also warns that the application does not cover every possible license, so use its Licensing Wizard for specially regulated activities.

If you are forming an LLC, corporation, or another entity that must register with the Secretary of State, complete that step through the Washington Secretary of State business-entity system before the DOR application.

Trade names, often called DBAs

Washington uses the term trade name. Register it through DOR’s trade-name process. It is not a county business license and does not replace zoning or activity permits. BLG’s business license vs. LLC vs. DBA vs. seller’s permit guide explains the distinction.

other regulated activities

Businesses that import, manufacture, distribute, or sell other regulated activities should use the Washington State other regulated activities and Cannabis Board process . Contractors, child care, gambling, and some professional activities also use regulators outside the ordinary city-endorsement path.

If you will hire employees

Washington uses the Business License Application to start the main employer-account setup. DOR says an in-state business that hires employees establishes workers’ compensation through the Department of Labor & Industries and unemployment insurance through the Employment Security Department when it files or updates the Business License Application for hiring.

Use the DOR hiring-employees page and the L&I workers’ compensation account guidance. Washington also requires most employers to report newly hired and rehired employees to the Division of Child Support within 20 days; use the state New Hire Reporting page for the current reporting route and exceptions.

Then check the city where the business operates for any local license or local B&O reporting duties. Do not assume the state employer setup automatically satisfies an Everett or other city tax account.

Tulalip Reservation: a separate tribal licensing layer

Snohomish County also includes the Tulalip Reservation. The Tulalip Tribes Tax and Licensing Division states that people operating a business for profit or conducting other revenue-generating activity within the reservation boundaries must first obtain a Tulalip business license.

The division administers general, home, special-event, and peddler business licenses as well as tribal other regulated activities, food, cigarette, transient-accommodation, sales/use, and restaurant-privilege tax programs. This is not simply another Snohomish County endorsement.

Three routing examples

• Home business with a Lynnwood mailing address: check the parcel first. If it is outside Lynnwood city limits, use the county home-occupation path rather than buying a Lynnwood endorsement based only on the mailing address.
• Food truck in Everett: follow Everett’s city license/vendor rules, Snohomish County Health’s mobile-food permit path, and the Washington state tax/business-license layer.
• Pet groomer in unincorporated territory: check County Animal Services, PDS zoning/site rules, and Washington registration. Moving inside a city can change the local route.