From a PlantPrefab.com online review:

The idea for this ADU was conceived in the wake of the 2018 Woolsey Fire, as a way to help families reinhabit their properties while rebuilding their primary residence. All “BUD” designs provide beautiful living spaces that can be delivered quickly and enjoyed for generations as a valuable addition to almost any property.

This innovative accessory dwelling unit (ADU) offers four different size and layout options to fit almost any property. From a compact studio, to a two-bed, two-bath home with garage, all configurations meet California ADU size allowances and are designed for fast and efficient prefabrication at Plant.

To read more: https://www.plantprefab.com/models/19