The story of Warren House begins in 1865.
The property was built for London banker Hugh Hammersley on land that was once part of a larger estate belonging to the Duke of Cambridge.
The initial purchase of this land was notable for its location, bordering the famous Coombe Nursery owned by the renowned horticulturists, Veitch & Sons.
Hugh Hammersley, the original owner, was a man of considerable wealth and vision. He transformed the estate with a passion for its grounds and gardens, and this became a point of great pride.
After Hammersley's death in 1880, the house entered a new phase of ownership. It was acquired by Lord Wolverton and, later, by General Sir Arthur Paget, who was perhaps the most influential in shaping the house's opulent character. Paget commissioned the construction of a grand ballroom inspired by the Hall of Mirrors at the Palace of Versailles and added a rare Persian Room. The Italian-style loggia and a grotto further exemplified the refined architectural tastes of the period.
Hugh Hammersley
Sir Arthur Paget
Following Sir Arthur's time, the house continued to serve as a private residence until 1954, when it was acquired by ICI (Imperial Chemical Industries) and was used as a training and conference centre. In the 1980’s significant parts of the land were sold by ICI for housing, and the income was used to extend parts of the hotel, such as the London Room and the swimming pool. This period marked a shift from private luxury to corporate function, a role it maintained until the year 2000. Warren House was then acquired with the express intent of developing it into a luxury hotel, wedding and conference venue.
Many of the recent housing developments surrounding the original house are situated on land that is part of the original property and were sold off in the period from 1954 to 2000.
In 2020, the hotel was acquired by Sun Hotels (part of the Samko Group).