The origins of Addington Palace trace back to a manor house predating the Norman Conquest. In 1771, Alderman Barlow Trecothick of London commissioned the construction of the current mansion, envisioning a spectacular Palladian residence. Completed by his nephew, James Trecothick, the estate was further enhanced by the renowned landscape architect Capability Brown, who meticulously designed the expansive gardens that continue to captivate visitors today.

Throughout its history, Addington Palace has been a residence for six Archbishops of Canterbury, a wartime Red Cross facility, and the home of the Royal School of Church Music. Notably, the palace hosted a banquet for Her Majesty The Queen and HRH Prince Philip during the Golden Jubilee celebrations in 2002, underscoring its enduring significance and timeless appeal.