Proposed Canon
The residents of the Carnyvale make their homes in wagons. The wagons seen are often referred to as "Vardo style", so there may be other types.
Vardo style wagons are colorful, and some can unfold into stages for performances or booths for gambling. Others double as magic item shops. Others still are mainly used as living spaces.
They can be pulled and moved by beasts.
This living arrangement is interesting when compared to how Thinkamancers and Dirtamancers live. The former have a temple, and the latter an underground mansion. Both are also significantly better paid for their services and have (generally) more esteem.
 Real World Reference
Vardo wagons are traditionally associated with gypsies.