Denver’s Food Truck Inspection: What They Actually Check (And How to Not Fail)
You’ve got the truck. You’ve got the menu. You’re ready to start serving. But first, you have to pass inspection with the Denver Department of Public Health and Environment (DDPHE), and they don’t mess around.
DDPHE inspectors go through your truck with a fine-tooth comb. Sink dimensions, water temperature, propane routing, ventilation, fire suppression, food storage, handwashing setup. Show up unprepared and you’re looking at re-inspection fees, weeks of delay, and money bleeding out while your truck sits idle.
We build every Denver food truck to pass DDPHE inspection straight out of the shop. But whether you’re buying from us or bringing in a truck from somewhere else, this is what you need to know to pass on your first try.
First Things First: Get Your License Paperwork in Order
Before DDPHE will even schedule an inspection, you need a Mobile Retail Food Establishment license application on file. The application fee is around $500 (it goes up periodically, so check the DDPHE website for the current number). You’ll also need:
A valid Colorado business license. A commissary agreement with a licensed commercial kitchen (this is where you’ll do food prep and truck cleaning). At least one person on staff with a current ServSafe Food Protection Manager certification. Proof of commercial auto insurance and general liability insurance. Your truck’s vehicle registration and VIN.
Don’t wait until the truck is built to start this paperwork. Get the commissary locked down early because good ones fill up, especially in Denver. We can recommend a few if you need names.
The Inspection Itself: What DDPHE Looks At
The inspection happens at a scheduled appointment. An inspector comes to your truck (usually at your commissary location or our shop), and goes through every system. It takes 45 minutes to an hour if everything is in order. Longer if there are problems. Here’s what they’re checking:
Water System
Your truck needs a potable water tank (fresh water) and a wastewater tank that’s at least 15% larger than the fresh tank. So if you’ve got a 50-gallon fresh tank, your waste tank needs to be at least 57.5 gallons. DDPHE will verify both capacities.
The water heater has to deliver 150 degrees Fahrenheit to the three-compartment sink. That’s not negotiable. We’ve seen trucks fail because the owner installed a cheap tankless heater that couldn’t maintain temp under load. When the inspector runs your three-compartment sink and the water isn’t hitting 150, you fail. We spec commercial on-demand heaters on every build for exactly this reason.
You also need a separate handwash station that’s not in the food prep area. It needs to be hands-free or single-push operation, with soap and paper towels mounted within arm’s reach. DDPHE is particular about the placement. If your handwash sink can splash onto a prep surface or is too close to a cutting board, that’s a write-up.
This Denver pancake trailer build shows the water system layout we use. Everything’s positioned for DDPHE compliance from day one.
Temperature Control and Food Storage
Cold holding: 41 degrees or below. Hot holding: 135 degrees or above. The inspector is going to open every cooler and check temps with their own calibrated thermometer. Every refrigeration unit needs a visible thermometer mounted inside where the inspector can read it without digging around.
Raw proteins go below ready-to-eat foods. Always. If your chicken is on the same shelf as your lettuce, or above it, you fail. Shelving needs to be clearly organized with enough separation to prevent cross-contamination. Label everything. It sounds basic, but you’d be amazed how many trucks get written up for sloppy storage.
Cooking Equipment and Ventilation
Anything that produces grease-laden vapors (griddles, fryers, charbroilers) needs a Type I commercial hood with a fire suppression system. Ansul systems are the standard. The hood has to be sized to cover all the cooking equipment underneath it, and DDPHE will literally measure. If your hood is 36 inches wide but your griddle and fryer combo is 40 inches, that’s a fail.
The Ansul system needs a current inspection tag from a licensed fire protection company. If it was installed six months ago but never officially inspected and tagged, it doesn’t count. Get it inspected before your DDPHE appointment. This is one of the easiest failures to avoid and one of the most common ones we see on trucks built outside Colorado.
Propane and Gas Systems
If your truck runs propane (most do), DDPHE wants to see a properly installed system with no leaks, proper routing away from heat sources, and a gas shutoff valve that’s clearly labeled and accessible. Propane tanks need to be secured and ventilated. The lines need to be copper or approved flexible connectors rated for LP gas.
We pressure-test every gas system before delivery because a leak found during inspection means an automatic fail and you’re not getting back on the schedule for at least a week or two.
We made this video walking through how a food truck gas system works. If you’re trying to understand what inspectors look for, this is a good starting point.
Surfaces, Floors, and General Construction
All food contact surfaces need to be smooth, non-porous, and easy to clean. Stainless steel is the standard. No wood, no painted surfaces in food contact zones. Floors need to be non-slip, seamless (no cracks where food debris can hide), and sloped toward a floor drain.
Walls and ceiling need to be smooth and washable. We use FRP (fiberglass reinforced panels) for interior walls on most builds. It’s durable, easy to clean, and DDPHE loves it. Avoid textured surfaces or anything with seams that can harbor bacteria.
The Failures We See Over and Over Again
We’ve been building trucks for Denver operators for years now, and the same failures keep showing up, especially on trucks that were built outside Colorado or bought used from another state.
Hand sink placement. The number one issue. DDPHE wants clear physical separation between your handwash station and your food prep area. If your hand sink is within splash distance of a cutting board or prep surface, they’ll write you up. A lot of out-of-state builders cram everything tight to save space, and it comes back to bite you in Denver.
Hot water that can’t keep up. You need 150 degrees at the three-compartment sink, consistently, under load. Cheap tankless heaters lose temp fast when you’re running all three compartments. We’ve seen people fail because the water was 148 degrees. Two degrees. Get the right heater.
Missing Ansul inspection tag. The system is installed, it works, but nobody got it officially inspected and tagged by a licensed company. Ten-minute fix that people forget until they’re standing in front of the inspector. Call your fire protection company at least two weeks before your inspection date.
Propane line routing too close to heat. Gas lines need proper clearance from cooking equipment and exhaust. If someone ran a flex line behind the griddle where it’s exposed to radiant heat, that’s a fail and a safety hazard. This is one we fix a lot on used trucks that come through our Denver repair shop.
No thermometers in the coolers. Every single refrigeration unit needs a visible thermometer. Not a digital readout on the outside of the unit. A thermometer physically inside the box where the inspector can see it. Dollar-store fix. Don’t forget it.
This Denver acai bowl truck passed DDPHE on the first try. All-electric build, clean layout, every detail dialed in.
After You Pass: Staying in Compliance
Passing the initial inspection is the big hurdle, but DDPHE does unannounced follow-up inspections throughout the year. They’ll find you at events, at your regular spots, wherever you’re serving. These follow-ups are the same checklist: temps, cleanliness, handwashing, proper storage.
The operators who never have problems are the ones who treat every service day like inspection day. Keep your temps logged. Keep your surfaces clean. Keep your Ansul tag current. Keep your ServSafe certification up to date. It’s not hard once it’s routine, but it does require discipline.
Your license renews annually. Renewal requires proof that your commissary agreement is still active, your ServSafe certification hasn’t lapsed, and payment of the renewal fee. Don’t let it slip. Operating on an expired license is a fine and a shutdown order.
HB25-1295 and What It Means for Denver Operators
Quick note on Colorado House Bill 25-1295, which went into effect January 1, 2026. This bill created statewide license reciprocity for food trucks. What that means: once you pass inspection and get licensed in Denver, other Colorado jurisdictions are required to recognize that license. No more paying for separate licenses in Aurora, Lakewood, Arvada, and every other city you want to work in.
This is huge for Denver-based operators who want to work the metro area and beyond. Before HB25-1295, you could easily spend $2,000 to $3,000 a year just stacking licenses. Now your Denver license travels with you. There are some nuances (local jurisdictions can still require you to register, and some have operational rules like noise or waste disposal requirements), but the core license is portable.
Why Trucks Built for Denver Don’t Fail
Not to beat our own drum too hard, but there’s a reason our Denver builds pass inspection on the first try. We know what DDPHE is looking for because we’ve been through it hundreds of times. Every layout we design accounts for sink placement, hood coverage, ventilation flow, water heater capacity, propane routing, and storage organization before a single piece of steel gets cut.
When you buy a truck from an out-of-state builder who doesn’t know Denver’s specific requirements, you’re rolling the dice. Maybe it passes. Maybe you’re paying us to retrofit it after it fails. We get those calls regularly, and the retrofit almost always costs more than doing it right the first time.
This 18ft French food truck for Denver even has a restroom. Custom builds, Denver-compliant out of the gate.
If you’re getting ready for a Denver food truck inspection, give us a call at (720) 209-2653. Whether you’re buying a new build or need help getting an existing truck up to code, we can walk you through exactly what DDPHE will look for and make sure you pass the first time.
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Planning Your Denver Food Truck Launch?
Passing your DDPHE inspection is one piece of the puzzle. If you’re still in the planning stages, check out our complete guide to starting a food truck in Colorado for a step-by-step roadmap. Wondering about your budget? Our 2026 food truck cost breakdown covers real numbers from actual builds. And if you’re still deciding between a truck and a trailer, our food truck vs food trailer comparison breaks down the pros, cons, and Colorado-specific factors.
Need a truck that’s built to pass Denver inspection on the first try? Explore our custom food truck manufacturing services or learn about our food truck repair capabilities for existing rigs that need upgrades.