The Singer Tower's facade was made of brick masonry ranging in thickness from at the top to at the base. The Singer Tower contained five bays on each side, each measuring wide. Construction plans show there were 36 windows on each floor. The faces of the tower were made of dark red brick, except for decorative elements such as trimmings, copings, courses, and windowsills, which were made of North River bluestone. On each side, vertical limestone piers separated the outermost bays from the three center bays, dividing the facade into three vertical sections. The outermost bays were illuminated by small windows. Horizontal belt courses wrapped around the tower above the 17th, 18th, 23rd, 24th, 29th, and 30th stories, while there were terracotta balconies on each side at the 18th, 24th, and 30th stories. Iron balconies also projected from the building at intervals of seven stories. Near the top of the tower, the vertical stone bands on each side formed a tall arch evocative of the tower's dome.