From this drawing it appears that the original house at Polton was a seventeenth-century single block, with an elevation broken only by a portico of Ionic columns, with a high hipped roof, and a central staircase in the hall - being evocative of the work of Sir Roger Pratt. Adam's proposal was to modernise and enlarge the house by the addition of projecting wings, creating greater movement in the façade, as well as creating two large oval rooms inside. The addition of the two pavilions would have effectively doubled the side of the house. It is not known is Adam's alterations were executed.