The style is Georgian-Revival, influenced by the work done at the office of McKim, Mead, and White. The architect, John Borie (1869-1925), was likely influenced more by 17th century English country houses, such as Ham House. Borie and Allerton together studied many examples of English houses and gardens before deciding on the architecture and design of Allerton House and the surrounding gardens. Like many English country homes, the main entrance is on the side of the house instead of the front, in order to offer more privacy to those entering and exiting the house.