This private office addition to an existing San Francisco residence diagrammatically extrudes an existing geometry found on the front of the house - a prominent box window frame - and pushes it through the building to become the rear façade. Here it emerges enlarged to provide a new tectonic frame from which the second floor rear addition is composed.

With the owners being graphic and media designers, the concept of the pixel unit is implemented as a useful architectural device: a field of self-similar units has the ability to articulate transient changes. The embossed pattern on the rear façade is punctuated daily with progressing light and shadows. Exterior and interior doors are created using a custom lamination of porous surfaces with translucent materials: perceived outlines of the building's occupants become fragmented and blurred bits of information throughout the day.