Washington State has a thriving food truck culture, but getting your mobile food business off the ground requires navigating a web of permits, licenses, and insurance requirements. Miss one, and you could face fines, forced closure, or a denied insurance claim.

This guide gives you the complete checklist so you can launch with confidence.

Step 1: Business Formation and Licensing

Before you serve your first customer, you need to establish your business legally.

Washington State Business License

All businesses operating in Washington must register with the Washington Secretary of State and obtain a Unified Business Identifier (UBI) number. You can apply through the Washington Business Licensing Service (BLS) at bls.dor.wa.gov.

City and County Business Licenses

Many Washington cities require a separate local business license in addition to the state license. Check with your city or county clerk's office for local requirements.

Federal Employer Identification Number (EIN)

If you have employees or operate as a corporation or partnership, you'll need an EIN from the IRS. Sole proprietors can use their Social Security number, but an EIN is recommended for privacy.

Step 2: Food Safety and Health Requirements

Washington Food Worker Card

Every person who handles food in Washington must obtain a Food Worker Card (also called a Food Handler Permit). Cards are issued by your local health department and require completing a food safety course.

Mobile Food Unit Permit

Washington's Department of Health (DOH) and local health departments regulate mobile food units. Requirements vary by county, but generally include:

• Inspections of your food truck's kitchen equipment
• Proof of a commissary agreement (a licensed commercial kitchen where you prep food and clean equipment)
• Compliance with Washington's Food Code (WAC 246-215)
• Proper handwashing facilities, food storage, and temperature control

Contact your county health department early — permit processing times vary and some counties have waitlists.

Commissary Agreement

Most Washington counties require food trucks to operate out of a licensed commissary — a commercial kitchen where you store food, prep ingredients, and clean your equipment. You'll need a signed agreement with a commissary and may need to provide proof to your health department.

Step 3: Vehicle Requirements

Commercial Vehicle Registration

Your food truck must be registered as a commercial vehicle with the Washington Department of Licensing (DOL). Requirements vary based on the vehicle's gross weight.

DOT Number (If Applicable)

If your food truck exceeds 10,001 pounds gross vehicle weight rating (GVWR) and crosses state lines, you may need a USDOT number from the Federal Motor Carrier Safety Administration (FMCSA).

Vehicle Inspection

Some counties require a vehicle inspection as part of the mobile food unit permitting process.

Step 4: Fire Safety Requirements

Fire Extinguisher

Washington requires food trucks with cooking operations to carry a properly rated and inspected fire extinguisher.

Hood Suppression System

If you use open-flame cooking equipment (grills, fryers, ranges), you're required to have an automatic fire suppression system installed in your cooking hood. This system must be inspected and certified regularly.

Fire Department Permit

Many Washington cities require a separate fire department permit or inspection before you can operate at events or on public streets.

Step 5: Insurance Requirements

Insurance is not optional — it's required by law, by event organizers, and by your own financial protection. Washington food truck operators typically need:

• Commercial auto insurance — required by law; covers the vehicle and liability while driving
• General liability insurance — required by most events, markets, and venues; covers customer injuries and property damage
• Product liability — covers claims from foodborne illness or contaminated products
• Equipment breakdown coverage — protects your commercial kitchen equipment
• Business interruption insurance — replaces income if you can't operate due to a covered loss

Learn more about food truck insurance requirements →

Step 6: Event-Specific Requirements

If you plan to operate at farmers markets, festivals, or private events, each organizer will have their own requirements. Common requirements include:

• Certificate of insurance naming the event organizer as additional insured
• Proof of health department permit
• Proof of fire suppression system inspection
• Signed vendor agreement

Get your insurance certificate ready before you apply to events — most organizers require it with your application.

Get Your Food Truck Insurance Sorted Today

Universal Insurance Services specializes in coverage for food truck operators across Washington State. We'll make sure you have everything you need to operate legally and protect your investment.

Call (888) 874-0208 or get a quote online. We serve food truck operators across all 39 Washington counties.