The original mid-1960’s house had been sited on the leveled top of a natural knoll. The organization of the existing house could be considered “upside down” in that the private bedroom areas are located on the ground floor and the public areas above. A half-flight of exterior stairs ascended to a split-level entry leading upward to the public spaces, or down to the private areas. The horticultural technique of grafting is characterized by the combination of a scion (leaves, stems and fruit) of one species with the more disease resistant rootstock of a different species to reap the benefits of both. Rather than adding on and further ‘thickening’ the existing house, the new addition is ‘grafted’ onto the existing entry where the levels of the house are already split. An extended stair serves as the stitches that bind the addition to the original house creating a new Master Bedroom suite and home offices for both work-at-home parents. Like a plant, the addition ‘grows’ towards light and views.