| Magnus J. Carnahan House | |
| Location: | 511 E. Main St., Washington, Indiana |
| Coordinates: | 38.6564°N -87.1697°W |
| Built: | -1902 |
| Architecture: | Queen Anne |
| Added: | August 29, 1991 |
| Area: | less than one acre |
| Refnum: | 91001167 |
Magnus J. Carnahan House is a historic home located at Washington, Daviess County, Indiana. It was built between 1896 and 1902, and is a -story, Queen Anne style brick dwelling on a raised basement. It features a round corner tower with a conical roof, one-story porch and balcony, and complex hipped and gable roof. Also on the property is a contributing carriage house.[1]
It was added to the National Register of Historic Places in 1991.