The front façade of the Keilty Building is an excellent example of mercantile architecture dating from the 1870s, the heyday of Prescott's commercial boom.

Built by Marcus Keilty in 1874, the existing buildings and new additions were harmoniously incorporated and the whole fronted by a magnificent façade in the then new Italianate style.

In 1878, the Canadian Illustrated News described the building as "a fine block," and said that it "would do credit to any city."

The façade is worth of preservation both to commemorate past achievements and to maintain downtown Prescott's period streetscape.

Its stone on brick façade in classical Italianate style with extant limestone round-headed windows, flat roof, and decorative cornices should be preserved.