Built in White's traditional shingle style, Adams undertook a substantial remodeling and expansion of the house in the winter of 1913-14. The building was stuccoed after the remodeling. The house was sold to Robert V. White, a Rumson councilman, who remodeled the house in Tudor Revival style in the 1930s. The estate was further subdivided from its original 68 acres to 5 acres today.[3]
The Adamses traveled abroad frequently, and would bring back specimens for Rohallion's expansive gardens.
The carriage house was also designed by Stanford White,[4] and contained a clock tower similar to his firm's clock tower in the Newport Casino. The tower contained the Rohallion Chimes, cast for Adams to a scale he designed. The carriage house was badly damaged by fire in 1961, and the remnant is visible at 8 North Rohallion Drive.