The Carriage House is located on the grounds of the Historic Rosemount Museum also known as the Thatcher Mansion.
The carriage house functioned as modern garages function today. The carriage house consisted of a tool room, wash room, stables, harness room, carriage room, hay loft and attendant’s apartment. The architect, Henry Hudson Holly, designed chutes in the stable ceilings (for animal feed) to move from the loft floor. Holly also designed the harness room (where the modern day bathrooms are now located) to be extra-large to allow a “smoking room for gentlemen in the morning and a retreat for male servants in the evening”
All of the floors were originally pine planks, except the wash room, which was cement. The interior walls are brick with tongue-and-groove, beaded siding. The outside of the building is faced with rhyolite stone similar to the main house, but on a smaller scale. The greenhouse was located to the west of the carriage house.