Exterior, Metal Roof Material, Metal Siding Material, House Building Type, Butterfly RoofLine, and Concrete Siding Material The bedroom pavilion is mostly hidden, thanks to a massive native California oak—part of a grove. “That’s the good thing about oaks—they keep their leaves in the winter, so you don’t have one view in the summer and another in the winter,” Suzanne says.  Photo 16 of 21 in I Love Modern Architecture from Sustainable Retirement Home in Tune with California Landscape