| Sonneborn Building | |
| Nrhp Type: | cp |
| Nocat: | yes |
| Coordinates: | 39.2864°N -76.6225°W |
| Built: | 1905 |
| Architect: | Theodore Wells Pietsch |
| Architecture: | Classical Revival, Late 19th And Early 20th Century American Movements, Industrial/Loft |
| Added: | October 29, 1982 |
| Refnum: | 82001588 |
Sonneborn Building, also known as Paca-Pratt Building, is a historic loft building in Baltimore, Maryland, United States. 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.[1]
Sonneborn Building was listed on the National Register of Historic Places in 1982. It is located in the Loft Historic District South.