Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Single Built Works (hierarchy name)
5. single built works (built environment)
6. [single built works by specific type]
7. [single built works by function]
8. residential structures
9. dwellings
10. houses
11. [houses by form]

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment
4. Single Built Works
5. single built works
6. single built works by specific type
7. single built works by design
8. portable buildings

Anotations

Scope note:

Portable residential units that possess their own chassis with wheels, are designed for year-round living, are infrequently moved, and are larger than travel trailers; use "travel trailers" for portable vehicles designed for travel and recreational purposes and for frequent towing. For motorized trucklike vehicles equipped as traveling living quarters, use "motor homes."