In practice a conversion van is nothing more than an upscale luxury people hauler. As soon as you add dining or bathroom facilities the van conversion becomes something else.  However it's mostly just nomenclature that doesn't really mean that much.  This is more an exercise in classification for buying and selling. There is no official definition, but it does make a difference in industry standard pricing guides like NADA, Kelly Bluebook, and Blackbook

• Camper Van - A Camper van is used to describe any type of van that is used for overnight camping. There is really no such thing as a commercially produced Camper Van. A commercially produced camper van is actually called a Class B Motor Home. But people choose to call any van that has been converted for the purpose of camping a camper van. It's a lot like saying you are going to Xerox something, when in fact you are not xeroxing you are making copies (Old Rob Schneider Reference)

• Class B Motorhome - When you build a Motor Home on a Van Chassis you are creating a Class B Motorhome.. A van may have the top raised or the side panels increased, but it is still a van in size and shape. But to really qualify as a Class B the van must contain built-in sleeping, cooking (Stove and Refrigeration - not just an icebox/cooler), and bathroom facilities (Including properly installed grey and fresh water holding tanks). Simple enough! If the frame of the van has been cut down clear to the floor level (they come direct from Ford, Chevy, and Dodge this way - just a frame and a cab) and built up completely from the floor it's a Class "C" not a Class "B"

• Conversion Van - Any van that has been uppfitted (converted) for comfort and luxury travel can be considered a conversion van. Conversion vans may share some of the features of camper vans and class b motorhomes, but are generally more upscale and designed for daytime use. These vans may have a raised roof, Custom Paint, Alloy Wheels, Leather Seats, Captains chairs, High End Audio Systems,Televisions, etc. Think of conversion vans as luxury... but very small family rooms on wheels.
  

• Class C Mini Motor Homes & B+'s - Class "C" motorhomes masquerading as Class B Motorhomes are called B+ Motor Homes. These models feature sleek aerodynamic body styles - often made of a single fiberglass shell. Do you remember the Chinook line of Motorhomes by TrailWagons, Inc.? Another good example is "Lexington" by Forrest river. These are also sometimes referred to as B+ Vans. They are in fact built from the same chassis as a Class C, but are made more to look like a Call B. Confusing? Ultimately it doesn't matter, as long as you find what you want.

If you are truly interested in learning more about how a Conversion Van might work for you and your family please Visit Conversion Vans