[1] This area was first settled when Matthew Pearce, a free settler who arrived on board the Surprise in 1794, was granted 160 acres in 1795.

[3][1] The earliest European record of this site (of Grantham Poultry Research Station (former)) was as part of the Cumberland Plain set aside for use as Prospect Common by Governor Phillip Gidley King in 1804.

Most of this land was vegetated by Cumberland Plain Woodland eucalypt forest and at this time was occupied by the Dharug Aboriginal people.

King appointed John Nichols, James Cleaver and William Kentwell as trustees of the Common, which extended over most of what is now Blacktown.

On 4 August 1923 the property, comprising.,46 acres 3 roods and 4 perches and valued at 9000 pounds including buildings, stock and plant, was transferred to the Department of Agriculture.

After 1939, the Department of Agriculture agreed that feed would continue to be distributed to private poultry farms as well as those of the returned soldiers.

[1] In 1939 the main function of the farm changed from commercial breeding and sales to experimental work aimed at improving the quality of the poultry industry.

Research undertaken at the Experiment Farm found vitamin B2 and manganese deficiencies in feed contributed to low hatchability.

[1] Further research by Malcolm McDonald, Bert Sheridan and Bob Pym had international influence and greatly enhanced the Australian Poultry Industry.

Plans were drawn up 1968–1969 by the Government Architect's Office under E. H. (Ted) Farmer, roughly contemporaneous with Sydney University's Fisher Library and Chemistry Building, additions to the Art Gallery of New South Wales, all considered fine examples of the new humanism of Scandinavian architectural design.

[1] In 2002 agreement was reached between Blacktown City Council and the Department of Agriculture to purchase the entire remaining site and its buildings.

[17][1] The War Memorial on the site of the proposed road deviation on Lot 4 and built by the Friends of Grantham, is of recent construction and comprises a bolted "box" framework of recycled timber set into a mosaic-tiled concrete base.

The plan takes a staged approach starting with the former Administration building, then Melrose cottage precinct, then the central parkland, then the lower paddock and lastly the adjoining open space areas to the south (Environmental Partnership (NSW) et al., 2008, 8,11).

[20][1] The following buildings/items survive on the site (as of 2008)[1] All buildings present as an integrated whole and provide interpretation and definition of a former working research station.

Cracking of brickwork due to subsidence is evident and attempts to rectify this have been made by the use of steel bracing and tie rods at the two front corners of the building.

[1] Plans were drawn up 1968–69 by the Government Architect's Office under E.H.(Ted) Turner, roughly contemporaneous with Sydney University's Fisher Library and Chemistry Building and additions to the Art Gallery of NSW, all considered fine examples of the new humanism of Scandinavian architectural design.

The only stair connecting the two levels is at one end and not accessed from the foyer, separating the ground floor activities from the public or visitors.

As it is set into the existing ground levels, a hardwood sleeper retaining wall runs parallel to its west elevation.

It was not part of the development of the poultry station and while a reasonable example of late 19th century housing, does not have an important historic relationship with the site.

[23][1] This single storey, open-sided shed comprises rough hewn posts presumably sourced from trees on the property.

[1] The property includes one of the largest remaining tracts of the Cumberland Plain Woodland in Seven Hills and one of few in the eastern part of Western Sydney.

[25][26][1] The War Memorial on the site of the proposed road deviation on Lot 4 (its north-western corner) and built by the Friends of Grantham, is of recent construction and comprises a bolted "box" framework of recycled timber set into a mosaic-tiled concrete base.

Firstly the remains of buildings and features that can be readily seen around the site and secondly in areas that may have potential to reveal material of archaeological value related to earlier phases of use of the station.

[1] Following the completion of the 1991 CMP the Property Services Group of the NSW Government proceeded to subdivide the site and sell the farm area for housing.

[1] As Grantham has not been actively used for a considerable time and not at all since 1990 there has been deterioration of the site remains, particularly from weed infestation and growth of self-sown plantings.

Adjacent to the driveway and garage is a circular depression that also appears to be a well site although no documentary evidence to support its location has been found.

[1] Grantham Poultry Research Station was listed on the New South Wales State Heritage Register on 7 April 2000 having satisfied the following criteria.

[1] The place is important in demonstrating aesthetic characteristics and/or a high degree of creative or technical achievement in New South Wales.

It served as the base for training and stock and feed supply for local and other State Returning Soldiers Settlements during and post World War I.

The site housed a wooden bachelors barracks that contributed to the rehabilitation and job reassignment of Australia's maimed and intact young men returning from the fledgling nation's initial involvement in a World War.