Why are many chattel houses located along the borders of large estates in Barbados?

In Barbados, chattel houses are often located along the borders of large estates because they form part of what are locally known as "tenantries".1

These clusters of wooden houses are typically owned by the occupants themselves, but they stand on land rented from the large estates. A defining feature of the chattel house is its portability; because they are not permanently fixed to the ground, they can be easily moved and relocated to different sites if necessary. This settlement pattern reflects the historical concentration of most farmland in the hands of large landowners or corporations.1