The Porteous, Mitchell and Braun Company Building is located in Portland's Arts District at the upper end of Congress Street.

The ground floor facade is entirely modern, with glass and stone, and is topped by a marquee identifying the building's current occupant, the Maine College of Art.

Each bay houses a three-part window, with a larger central pane separated by smaller side ones by slender engaged columns.

[2] The building was constructed in 1904 to plans by architect Penn Varney of Lynn, Massachusetts, for the Portland dry goods firm of Watson, Miller & Company, and was originally three bays wide.

In 1906 that firm was acquired by the Connecticut retailer Porteous, Mitchell and Braun, which doubled the building's size in 1911, and commissioned the unifying facade from local architect George Burnham.