When the sun goes down in the evenings, it casts a warm glow into the rooms of this west-facing multi-generational house. The homeowners and their children live on the upper two floors, while sharing a ground-floor entrance and a three-car garage with the homeowners' parents, who occupy the ground floor ADU. A soaring steel staircase connects the three floors. Architectural design by Daniel Umbach and interior design by SpaceLab Design Services.