Buying a van and the legal side

This hub is for you if you haven't bought a van yet, or you have one and want to know how to title it, insure it and park it overnight without trouble. The van you pick sets the limits for every later build decision, and the paperwork and local rules decide where and how comfortably you can actually use it.

The key decisions

Which van to build on

For a full-size build in the US, the shortlist is usually the Ram ProMaster, the Ford Transit and the Mercedes-Benz Sprinter. The ProMaster vs Transit vs Sprinter comparison boils the choice down to three questions: how tall you are, whether you want to sleep sideways across the van, and whether you need all-wheel drive. The ProMaster is the widest and boxiest (75.6 inches wall to wall) but front-wheel drive only. The Transit high roof has the most standing height of the three standard high roofs (81.5 inches) and optional AWD. The Sprinter brings a diesel engine, available AWD and the longest body, at the highest price. Confirm payload and options on the window sticker of the exact van you're buying, because they change by configuration.

Whether to register it as an RV

There is no national process. Each state defines a motor home in its own way, usually around permanent sleeping and cooking facilities. The guide to registering a DIY van as an RV and insuring it walks through official examples from Oregon, California, Florida and Texas and sets out the trade-offs. Reclassifying can make it easier to buy an RV policy that values the conversion, but it means paperwork, sometimes a weight certificate or inspection, and in some cities stricter RV parking rules. Unfinished builds usually have to stay titled as a van.

Where you can legally sleep

No federal law bans sleeping in your van, but city and county ordinances, state law and the landowner all have a say. Since the Supreme Court's 2024 Grants Pass decision, more cities treat sleeping in a vehicle as camping. Read is it legal to sleep in your van for the 2025 and 2026 changes and how to check a local code, then free overnight parking and stealth camping for the practical options: BLM and national forest dispersed camping, store lots that allow it location by location, rest areas where state rules differ widely, and street parking where ordinances allow it.

A sensible order

Step	What to do	Guide
1	Shortlist a platform by height, sleeping direction and drivetrain	Van comparison
2	Check your state's motor home definition before you design the build, so the finished van can qualify if you want it to	Registration and insurance
3	Learn how local sleeping rules work and how to look them up	Sleeping in your van
4	Plan where you'll actually park each night	Free overnight parking

Step 2 belongs early for a reason: if your state wants permanent sleeping and cooking facilities, a fully removable layout may not qualify, and that's easier to plan for than to retrofit.

What to keep in mind

• The legal guides are general information, not legal or insurance advice. Confirm with your own DMV, insurer and the current local code.
• Ordinances change often. A spot that worked last year may now be signed against overnight parking, so read the signs every time.
• Public land is the most reliable free option. BLM dispersed camping is generally limited to 14 days in any 28-day period, and national forests set their own limits.

Once you have a van, move on to the build hub to plan weight, layout and budget.