The California Guide on Converting a Commercial Van to a Van Camper: Legally Changing Your Sprinter to an RV

June 9, 2026

You just spent six months, thirty thousand dollars, and countless trips to the hardware store turning a bare metal cargo van into a rolling off-grid cabin. It's beautiful. But to the California DMV, your bespoke Sprinter or Transit is still just a commercial delivery truck — and they are charging you commercial weight fees to prove it.

If you want to stop paying commercial fees and get your rig legally recognized as a passenger vehicle, you have to formally change the body type model (BTM).

Here is the masterclass on how to make it legal, the exact DMV manual rules you need to know, and the "Trifecta" of paperwork required to get it done without dragging your new home-on-wheels to a DMV parking lot.

Motorhome vs. Van Camper: What Did You Actually Build?

Before you fill out a single form, you need to know what the DMV considers your rig to be. Many DIY builders think they built a "Motorhome," but the DMV draws a hard technical line between a Motorhome and a Van Camper.

• Motorhome (BTM: MH): According to DMV VIRP Chapter 6.055, a motorhome must contain permanently-installed independent life support systems that meet strict ANSI criteria. It requires at least four (4) of the following: cooking, refrigeration, self-contained toilet, heating/AC, a potable water supply system, a separate 110-125V electrical power supply, or a liquid petroleum (LP) gas supply.
• Van Camper (BTM: VC): Also found in VIRP 6.055, a Van Camper is a van modified for human habitation or camping (like adding a bed, carpet, and cabinets) that does not meet the strict 4-system ANSI requirements of a motorhome.

Pro Tip: Adding a mattress to the back doesn't cut it. The DMV explicitly warns that modifications must meet the definitions for human habitation, otherwise you may be subject to citation from law enforcement (VIRP 13.030).

The DIY Conversion "Trifecta"

If you built the van camper yourself, you can convert your commercial license plates to auto license plates (dropping the commercial weight fees) by submitting three specific forms.

1. Miscellaneous Certifications (REG 256A): You must complete the "Certification of Vehicle for Human Habitation" section to certify the living quarters (VIRP 13.030). You'll ask DMV if you need to check the Motorhome box in section since you have a Van Camper.
2. Statement of Facts (REG 256): You must complete the "Statement for Vehicle Body Change" section. You also must provide original receipts or invoices for the added parts. If the conversion cost $2,000 or more, the DMV will adjust your Vehicle License Fee (VLF) class (VIRP 13.005).
3. Verification of Vehicle (REG 31): A licensed verifier (or DMV) must physically inspect the van to confirm the new body type (MH or VC) and verify the public VIN, Federal Certification Label, and Emissions Label.

Is the REG 31 Truly Required?

Yes. If you altered the van, the REG 31 is 100% mandatory.

According to DMV VIRP Chapter 22.035 (Changing the Body Type Model) and VIRP Chapter 13.005, whenever the current owner modifies a vehicle causing a BTM change (like going from a Cargo Van to a Van Camper), a REG 31 must be completed after the alteration has taken place.

The only time a REG 31 is skipped is if you bought the van brand-new from a dealer already built out as a camper, or if you are buying a used van that already has "VC" or "MH" listed on the existing California title.

Skip the DMV Parking Inspection Lane

Picture this: you try navigating your 170-inch wheelbase, high-roof extended rig through the cramped parking lot of the Carmichael or Sacramento DMV. Not exactly the #VanLife dream.

Instead of fighting for space and waiting in the scorching sun, a mobile vehicle verifier can come directly to your vehicle. Whether you are putting the finishing touches on your build in Folsom, wiring your solar setup in Roseville, or parked out in Elk Grove, the verification comes to you.

We walk around the van, verify the public VIN, confirm the permanent living quarters, and complete the REG 31 on the spot.

Let's Get It Verified

Don't pay commercial weight fees for a vehicle that hauls surfboards and mountain bikes instead of Amazon packages. Once your build is bolted down and ready for the highway, get the paperwork to match.

If you are in the Greater Sacramento area, Citrus Heights, Rocklin, or Orangevale, reach out to schedule your mobile VIN verification. Keep building. We'll handle the REG 31. Let's get it verified.