The need for the burgeoning ADU market in theSouthern Californiamarket is commanding a closer look. As such, heres an interesting project from Michael Matthews Studio, which was just named a Citation Award winner at the AIA Los Angeles Design Awards in December.Image courtesy Michael Matthews StudioWorking for a relocated client on a sloping 0.6-acre parcel in the San Diego area, Matthews Barrel Cactus ADU is a 1-bed/1-bath 1,050-square-foot design attached to a one-story midcentury modern home. As the name suggests, barrel-vaulted ceilings and a reference to endemic Saguaro Cactus plants are its defining characteristics.Image courtesy Michael Matthews StudioA "contemporary response then forms via a rheumatic response between the glass-fiber reinforced roofline and bioretentive cactus planters, allowing for a high thermal mass.Image courtesy Michael Matthews StudioThe introduction of clerestory windows and the possibility of deep overhangs provide the space with further in...