At the heart of Rokeby Museum is the Robinson family, who cherished this place as their home. Throughout the Robinsons' ownership of Rokeby, several additions and changes were made to the house. In 1814, Thomas R. Robison expanded the late 18th-century farmhouse. With 5 bays and a tall roofline, this prominent addition highlights the growing wealth of the family. A second addition, where the roofline changes on the far right of the house, was done by George Gilpin Robinson in 1893. The room on the first floor housed the town clerk's office; the room above was used as a bedroom. In 2021, preservation work repaired the porches on the house. Using photos from the collection, it was learned that the family changed the foundation of the front porch, likely to stabilize it. The restoration maintained the porch features from the last generation who lived at Rokeby.