Designed by Theodore Wells Pietsch, it is a nine-story loft building constructed in 1905 of "fireproof" reinforced-concrete construction, faced in buff-colored brick, with a coursed ashlar foundation and stone trim.

Its detailing reflects the Neoclassical Revival of the early 20th century.

It was built for Henry Sonneborn and Company as a vertical clothing manufactory and was the tallest and largest strictly manufacturing building in the city of Baltimore.

[2] Sonneborn Building was listed on the National Register of Historic Places in 1982.

This article about a Registered Historic Place in Baltimore is a stub.