The Boston firm that designed the Equitable Building produced this combination of Renaissance Revival and Richardsonian Romanesque. A battered stone base rises to round-arched bays on the first, third, fifth, and seventh floors. These arches are repeated in a narrower version on the top story in pairs divided by colonnettes. The cube proportions and absence of recesses or projections reflect the Renaissance Revival influence, while the arcaded fenestration bays are similar to those of Richardson's Marshall Field Wholesale Store. The huge blocks of red sandstone are from the Kenmuir Quarry near Manitou Springs. Weathering led to removal of the original narrow cornice, carved stringcourses, and trim and smoothing of the originally rough faces of the stone blocks at the base. In 1996–1997 this eight-story office building underwent a conversion to 130 lofts.