Hatchlands Park is a red-brick country house with surrounding gardens in East Clandon, Surrey, England, covering 170 hectares (430 acres). It is located near Guildford along the A246 between West Clandon and West Horsley. Hatchlands Park has been a Grade I listed property since 1967.
The park initially belonged to the Chertsey Abbey with the park being mentioned in the Domesday Book. In 1544, after the dissolution of the monasteries, it was granted by Henry VIII to Sir Anthony Browne and his wife, Lady Elizabeth Fitzgerald (commonly known as 'The Fair Geraldine').
The first visual record of the park is shown on a John Seller map of 1693.
The park was purchased in 1750 by Admiral Boscawen who landscaped the grounds; for the house he employed the architect Stiff Leadbetter. Admiral Boscawen's widow, Fanny sold the estate in 1770 to the Sumner family of the East India Company; both father and son made further alterations to the property. The father, William Brightwell Sumner commissioned Benjamin Armitage to make alterations, and his son, George Holme Sumner asked Humphry Repton (1752–1818) to redesign the park and garden. Towards the end of the century, Joseph Bonomi, ARA, was commissioned to alter several rooms and to impose a frontispiece on the west front.
In 1888, the Sumner family sold the estate to Stuart, later Stuart Rendel, 1st Baron Rendel. He had extensive changes made to the fabric of the house. Rendel was mainly his own architect but he also employed his nephew by marriage, Halsey Ricardo, and commissioned Reginald Blomfield to build the Music Room. Rendel coloured and gilded Adam's ceilings, embellished the staircase with rococo decorations and switched the main entrance of the house to the east. Rendel also commissioned Gertrude Jekyll to design the gardens which contain a parterre.
The house contains splendid interiors by Robert Adam, decorated in appropriately nautical style: anchors, cannon, dolphins and sea-nymphs are presided over by Neptune himself run through the house reflecting its first owner Admiral Boscawen.
The instruments include harpsichords and fortepianos dating from 1750 to 1840 - including an Erard pianoforte reputedly made for Marie Antoinette. It is one of the few French instruments of the time to escape destruction for firewood following the 1789 revolution. The pieces were brought together to represent those instrument makers who were highly regarded or patronised by composers, rather than to illustrate a complete or technical history of keyboard manufacture. Twelve of the instruments were actually owned or played by great composers such as Purcell, J. C. Bach, Mozart, Beethoven, Chopin, Liszt, Mahler and Elgar.
- Hatchlands Park site at the UK National Trust.
- The Cobbe Collection Includes details of concerts and photos of instruments