When Latrobe began private practice in England, his first projects were alterations to existing houses, designing Hammerwood Park, and designing Ashdown House, East Sussex. Alterations completed early in his career may have included Tanton Hall, Sheffield Park, Frimley, and Teston Hall, although these homes have since been altered and it is difficult now to isolate Latrobe's work in the current designs. His designs were simpler than was typical at the time, and had influences of Robert Adam. Features in his designs often included as part of the front porticos, Greek ionic columns, as used in Ashdown House, or doric columns, seen in Hammerwood Park.