The Walter house was one of Wright's most complete designs. Nearly everything at Cedar Rock bears the architect's imprint. Wright designed the furniture, selected the carpets, chose the draperies and even picked out the accessories. Cedar Rock was begun in 1948 and completed in 1950. It's roof and floors are concrete; the walls are brick, glass and walnut. Cedar Rock is one of nine Wright designed residences in Iowa. There is also a bank and hotel designed by Frank Lloyd Wright in the state. Of all the Wrights designs in Iowa, Cedar Rock is the only home chosen by Wright to bear his coveted signature tile.