The need for an additional Bedroom and Bath created an opportunity to rework the entire rear of this Mill Valley home. By situating the ground floor addition where an existing deck had been, and placing a new roof deck over the addition, a more useable floor plan was created without taking up more of the small rear yard. A new stair created access to the outdoor spaces and a new hot tub area. Simultaneously, a new ridge beam over the Living and Dining Rooms allowed full height windows to be added upstairs. This brought more light and drama to these spaces, as well as opening them up to the views of the yard.