Though it may be tiny—one A-frame ADU in Koones’ book measures just 350 square feet—the accessory dwelling unit is built to code and set on a solid foundation, with dedicated spaces for ...

A rare "triple-A-frame" home in Delaware County with two detached ... the owners saw it was possible to use the property as a site to build both an ADU and a studio space," Lesnick added.

for every formal permitted ADU that was built in San Jose between 2016 and 2020, it is estimated that seven to eight unpermitted ADUs were built in the same time frame, he said. Ouyang points out ...