Orielton is a heritage-listed former hunting, pleasure garden, farming estate, weekender, cereal cropping, flour mill and pastoral property and now horse agistment and residence located at 181 - 183 Northern Road in the south-western Sydney suburb of Harrington Park in the Camden Council local government area of New South Wales, Australia.

Lord's grant included extensive alluvial flats along Narellan Creek and these were probably soon put to cultivation for cereal and hay production.

[2] Perry later subdivided a portion of the estate and leased the main property to Charles Thompson, Clerk of the Bench to Camden Court.

The Mill (recently built by previous owner Perry, the miller "on the best position in the district" and in 24 hectares (59 acres) of paddocks, was passed in at auction.

By the 1870s Harrington Park house had established a reputation as a gentleman's country seat, with "hospitality, picturesqueness and the hunt bringing interesting associations to the English eye".

Harrington Park and Orielton remained within the Rudd and Britton (descendant) families until 1933 when (with the Great Depression having an impact) they were sold to Arthur and Elaine Swan.

[1] Mrs Harriet Beard, widow of Wynyard Square, Sydney bought and occupied Orielton in 1876 when the Rudds were living at Harrington Park and both were responsible for developing the properties in the Victorian period building design and garden or landscape schemes.

The Beards changed and developed the homestead extensively to relate to the southern prospect and expansive views to Studley Park and the floodplain of Narellan Creek.

[7] The estate was held in trust until it sold in 1912 to Frederick Walker (solicitor), Henry Webster (Bank Manager) and John Morton (physician) as joint tenants and was leased to Ephraim Cross, a Narellan storekeeper.

[6][1] Cross sold the section east of The Northern Road to Harrington Park in 1926 and the remainder (including the houe) to Yvonne Coleman in 1927.

Daughter Eileen Pilling described her father as not a farmer but that he had bought 405 hectares (1,000 acres) at Narellan which included Orielton estate.

She recalls the long drive lined with trees and at the entry to the house a carriage loop circled close to the garden, within which a large aviary was located with many colourful birds.

Towards the front of the house was a tennis court (east of the carriage loop) and stone steps led to the Italianate facade through splendid gardens.

The Swans upgraded the sections of Orielton's farm buildings and then allowed the Department of Defence to make the homestead liveable for their occupation, from 1942 to 1943.

[9][1] During World War II the Camden district was the scene of much military activity, and Orielton was occupied by the army for training and residential purposes.

[8] A dam visible in a 1947 aerial photograph south-west of the homestead was expanded by Fairfax c. 1958, across the western boundary of the former picking garden and orchard.

A new extension was added, making the drive a "V" shape and joining the Northern road further north, roughly in line but to the east of the main homestead and farm management complex.

Cattle grazing fields and shelter sheds lining Orielton's northern edge of Narellan Creek are apparent in a 1990 aerial photograph but absent in a 2005 one.

Orielton homestead Lot is currently bound on the north, south and west by open paddocks and to the east by The Northern Road.

The river flats have remnant trees and express the past land uses of agricultural cropping, pasture improvement and recreation pursuits.

To the east of the homestead the gardens comprise a carriage loop with densely planted species including Bunya pines and a Moreton Bay fig (Ficus macrophylla).

The 1947 aerial photograph shows semi-circular gardens (beds) in front of the Italianate portion of the homestead with associated planting and arrangements.

[18] Scattered plantings include native kurrajong (Brachychiton populneus), deodar or Himalayan cedar (Cedrus deodara) and privet (Ligustrum sp.)

[1] As at 24 February 2004, Orielton still retains some of its character based on the traditional juxtaposition of the main homestead area with its dominant garden and cleared pastureland beyond.

The visually prominent farm complex (c. 1840) is situated on the side of a knoll commanding sweeping views of Narellan and obeying the principles of 18th Century English landscape design.

Orielton is considered to be of exceptional significance because of the integrity of its rural setting and the demonstrable functional relationships within the homestead and farm complex.

Orielton's historical relationship to other nearby early grants such as Harrington Park, Wivenhoe and Kirkham and its place in the development of the Camden area are locally significant.

The homestead site in particular has high research significance for its continuous architectural evolution, including the impact of World War Two in the region.

Orielton Estate is representative of past land uses of agricultural cropping, pasture improvement and recreation pursuits that reflect the emergence of Sydney's new middle class during the 19th century.

The estate, much like neighboring Oran Park and Harrington Park is representative of Crown grants, subdivision patterns, ownership patterns and grazier's homesteads[1] This Wikipedia article was originally based on Orielton, entry number 01693 in the New South Wales State Heritage Register published by the State of New South Wales (Department of Planning and Environment) 2018 under CC-BY 4.0 licence, accessed on {{{accessdate}}}.