 Hannaford routinely produced buildings in many different styles, with most of his residences in the late 1880s and early 1890s being either in the Romanesque Revival style or examples of eclecticism, merging components of two or more established styles.The majority of Hannaford's surviving residences in metropolitan Cincinnati, including several built in the early 1890s, featured facades dominated by large areas of ashlar stonework, comparable to the slightly older Mayer House.In 1980, the S.C. Mayer House was listed on the National Register of Historic Places, qualifying because of its historically significant architecture.