Ightham Court, formerly known as Court Lodge, was an ancient manor whose ownership is recorded at least as early as 1262. The current house was built in the mid-C16 by the Willoughby family, either Sir Thomas Willoughby, who was Chief Justice of the Common Pleas in 1538, or his son Robert. Robert sold the property to William James, the third son of a Roger James from Haastrecht in the Netherlands by 1600, and it remained in the ownership of that family for over 300 years. According to Hasted (The History and Topographical Survey of the County of Kent V, 1798) his successor, Sir William James II, sequestered loyalist estates during Cromwell's interregnum and was three times a Knight for Kent. His successor, Sir Demetrius James, was born c1629 and died in 1678, and his son William James III was elected Sheriff of Kent in 1732.
During the latter part of the C17 or the early part of the C18 a formal garden was laid out and this is illustrated in a Kip engraving published in 1728. This shows the main house facing west to Fen Pond Road behind a small walled garden and a circular carriage drive, flanked by stabling and barns to the south and walled kitchen gardens to the north. Immediately north and east of the house are shown formal gardens with a circular pond with a fountain to the east, a summer house at the south-east corner and raised terraces on the north side. Further south are additional kitchen gardens. North of the formal garden is shown a large wooded area known as The Wilderness, including an island with a moat and extensive fish ponds. Adjoining the eastern side of the formal gardens and adjoining kitchen gardens, and continuing on the south side of the kitchen gardens, is shown an L-shaped area of ornamental trees, possibly an orchard. The Kip engraving shows further fields and woodland to the south and east.
During the middle years of the C18 William James IV was in residence at Ightham, and on his death in 1781 the estate passed to his second son, Colonel Richard James. A series of alterations to the house carried out by him in c1800 may, in part, have been directed by the architect Samuel Wyatt (Country Life, 26 June 1958). Ightham Court is shown on the 1798 one-inch Ordnance Survey map Kent Sheet 16 by draughtsman George Pink. Colonel James died childless in 1807 and left Ightham to his first cousin once removed, Demetrius Grevis, who then changed his name to Grevis-James.
On the 1868 First Edition Ordnance Survey map the property is still called Court Lodge, a number of the garden boundaries shown in the Kip engraving survive and an ice house is shown in the middle of the island. There is no change on the Second Edition map of 1895, except that the name of the property has changed to the current Ightham Court. Sales particulars of 1905 for Ightham Court state that 'The grounds surrounding the house include extensive lawns on the west, north and east sides. One with a small pond stocked with goldfish and an aviary and machine house. Three produced walled kitchen gardens, fruit garden and orchard. Extensive glasshouses... Picturesque wilderness (with rookery) containing some remarkable timber trees including very fine specimens of oak, ash, beech, lime, chestnut etc., near the middle of this wilderness is an island surrounded by an ancient moat with a summer or tea house on it. The Moat is kept at a level by a pond close at hand, which is fed by springs and is connected to the garden by pipes feeding several cisterns and the fish pond on the lawn. Nearby is a similar Island or Tumulus surrounded by a moat now dry. There is an ash plantation growing hop poles.' The total acreage surrounding the house is 95 acres, 2 rods, 28 poles. There is no change on the 1909 Ordnance Survey map.
From the Grevis-James family the property passed by marriage to Colonel E W Grevis Bailey, on whose death in 1920 the house was sold and the estate divided up. It then passed through several hands until, in 1944, the Court was purchased by Colonel Ralph and Lady Gweneth Cavendish. It changed hands again in 1984, following which a major restoration programme was undertaken. The site remains (2015) in divided ownership.