Wright was a 22-year-old draftsman for Louis Sullivan when he began work on this family home. The exterior reflects the popular East Coast Shingle design but also shows an emphasis on pure geometric forms with a broad, sheltering roof and natural materials. The plan of the first floor develops outward, pinwheeling from the masonry core of the hearth. The interior is remarkably open for its period. In 1895, Wright added a dining room and barrel-vaulted playroom. In 1898 he added a studio with an octagonal drafting room. Wright employed fourteen apprentices here and completed the designs for at least 125 buildings. In 1974, the Frank Lloyd Wright Home and Studio Foundation, now the Frank Lloyd Wright Trust, was established to acquire the building and restore it to its 1909 design.