Running a food truck or hot dog stand in Knoxville, TN (or within Knox County / City of Knoxville) involves satisfying federal, state, and local regulations. Below is a fairly detailed “roadmap” you can use to plan your launch.
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1. Business Planning & Structure
Step	What to Do	Notes / Considerations
Choose business entity	LLC, sole proprietorship, corporation, etc.	Consider liability, taxes, and insurance.
Register business name / trade name (“DBA”)	With state / county as required	Ensure name is available.
Get EIN / Tax IDs	From IRS for federal taxes	Also needed for payroll, bank accounts, etc.
Register with Tennessee Dept. of Revenue	For state taxes / sales tax	You’ll collect sales tax on food sales.
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2. Licenses, Permits & Health Compliance
Because you're preparing and selling food, there are several regulatory bodies to satisfy:
Permit / License	Issuing Body	Requirements / Notes
Mobile Food Unit (MFU) Permit	City of Knoxville (Business License / Tax Office)	Annual permit costs $200; temporary 3-day permit costs $75. 
Health Department / Food Service Permit	Knox County Health Department / Tennessee Department of Health	You must comply with Tennessee food safety rules. 
Tennessee Mobile Food Establishment Registration	Tennessee Department of Agriculture	Submit the mobile food questionnaire, floor plan, etc. 
Grease Control / Sewer / Utility Permits	Knoxville Utilities Board (KUB)	If you generate grease-laden waste or use shore power, KUB needs to approve the grease control setup. 
Fire / Electrical Inspections	Knox County / City Fire Marshal & Electrical Inspector	Trucks must meet fire suppression, propane, wiring codes. 
Food Handler / Manager Certification	State or local health authority	Employees must have a food handler card / training. 
Business / Vendor License	City / County	You’ll need a standard business license in Knoxville (or Knox County) in addition to MFU permit. 
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3. Permits, Zoning & Location
You must operate in allowed zones: you can run on private property in many commercial or industrial districts (with owner permission) but must follow city zoning rules. 
Public right-of-way spots are restricted to Mobile Food Vending Zones; you may need to reserve the spot. 
For events (fairs, festivals), you’ll often need a temporary permit. 
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4. Equipment, Vehicle & Safety Setup
The vehicle must meet health code standards: stainless steel surfaces, proper sinks (handwash, 3-compartment, etc.), food-grade storage, refrigeration, etc.
Fire suppression, hood venting, K-class fire extinguisher (if you use fryers) required. 
Propane systems, wiring, gas lines, electrical systems must pass inspections.
If using shore power (plugging into city power), electrical must be inspected and permitted. 
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5. Inspections & Approval
Submit your MFU application with all required documents: menu, photos of vehicle, insurance, health permit, grease control permit, etc. 
Schedule the vehicle inspection (fire, electrical, health) with City/County. 
Once your unit passes, you’ll receive your permit and can legally operate. 
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6. Ongoing Compliance & Operations
Renew your mobile food permit annually (renewal fee $50). 
Submit to regular health department inspections.
Maintain grease trap / control and keep disposal logs. 
Ensure all employees keep valid food handler certifications.
Keep your insurance (liability, vehicle, worker’s comp etc.) current.
Follow food safety, temperature, cleanliness, waste disposal rules.