Oran Park is on the traditional land of the Dharawal people. The area has a rural character with open pastures and rolling hills. The area was originally made up of two principal land grants, one of 2,000 acres, Harrington Park, granted to William Campbell in 1815 and another to George Molle in 1817, Netherbyes, of 1600 acres. Oran Park appears on the pre-1827 map as part of Harrington Park. The Oran Park portion was sub-divided from the Harrrington Park estate in 1829 and acquired by Henry William Johnston in 1852. The Oran Park estate is representative of the layout of a country manor estate with views afforded to and from the manor over the landscape and to the important access points of the estate.
The two-storey Georgian-style house was built in c.1857. The house was acquired by Thomas C Barker (of Maryland and Orielton), who sold it to Campbelltown grazier Edward Lomas Moore (of Badgally) in 1871. The property was later owned by Atwill George Kendrick and then the Moore family who sold the house and land to B Robbins and a Mr Smith operated a golf course with trotting facilities. It was sold in 1945 for £28,000, and in 1963, 361 acres was purchased by ER Smith and J Hyland, farmers. The homestead and stables were sold in 1969 by John and Peggy Cole and purchased by the Dawson-Damers, members of the English aristocracy. John ‘DD’ Dawson-Damer was an Old Etonian and car collector. He was a prominent motor racing identity and was killed in an accident in West Sussex in 2000. After her husband’s death his wife sold the house, with its historic gardens and 107 hectares of pasture, in 2006 for $19 million to Valad Property Group.
During World War II Narellan Army Camp was based at Oran Park. Part of the original estate is the location of the Oran Park Motor Racing Circuit. The main grand prix circuit is 2.6 km long with a mixture of slow, technical and fast sweeping corners as well as changes in elevation around the track. Apart from the main racing circuit there area has had a number of subsidiary activities including a two dirt circuits, two four wheel training venues, a skid pan and a go-kart circuit. The racing circuit has been used for a variety of motorsport including club motorkhanas, touring cars, sports sedans, production cars, open-wheelers, motocross and truck racing The track closed in 2010 to become a housing estate. Oran Park Town opened for land sales on March 2010. The suburb is being developed by
Leppington Pastoral Company (owned by the Perich family) in a joint-venture with Landcom with an estimated 11,500 dwellings and 33,00 people to reside in Oran Park and Turner Road. Oran Park is part of the South West Growth Area which is eventually planned to accommodate 295,000 people by 2031. Between 2010 and 2018 the population of Oran Park grew from 0 to 7500. The median house price in April 2018 was $785,000.
Oran Park Town has seen numerous community facilities emerge, from schools, churches, a retirement home, and the Podium retail complex and business hub. Camden Council’s new Administration Building is now open and a new library and community centre were opened on 30 June 2018.