The owners of a house in San Francisco’s Noe Valley asked us to transform a steep backyard into a hillside garden. The lowest tier includes planters and an outdoor dining area. The middle level features a seating area, a fireplace, hot tub, and a custom bench patterned after an Eames sofa. The upper level has a lawn with a small glass pavilion featuring movable screens that can be opened or closed for varying degrees of privacy.