Hillside Santa Barbara ADU is a project designed by Obreval. At the heart of this design is the reinterpretation of openness and fluidity. Upon entering, one is immediately struck by the seamless integration of space, accentuated by a floating volume that delicately divides the bedroom area. This floating volume, reminiscent of an egg shape, serves a dual purpose, housing both the bathroom and a fireplace. Inspired by the iconic Glass House by Philip Johnson, this reinterpretation adds a touch of sophistication and whimsy to the space. Photography by Pablo Zarama.

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Central to the design ethos is the adherence to a strict 3×3 grid system. Not merely a visual motif, this grid serves as the structural backbone, the framework upon which the entire ADU is built. From the wood beam ceiling to the distribution system, every element adheres to this disciplined grid, lending a sense of order and coherence to the design. However, amidst the rigid geometry of the grid, emerges a striking contrast in the form of the sculptural bathroom volume. An architectural marvel in its own right, this sculptural element breaks free from the constraints of the grid, serving as a focal point and a testament to the architect’s ingenuity.
Beyond its spatial and architectural research, the ADU harmonizes seamlessly with its natural surroundings. Following the contours of the topography, the ADU cascades gracefully, creating a series of interconnected spaces that un...