;Landscape: Brownlow Hill has an exceptionally attractive semi natural landscape and the setting of the house is one of Australia's best surviving examples of a colonial garden. Brownlow Hill not only includes the house & garden but also the surrounding landscape. The fine brick built stables, aviary and the
sandstone pond
balustrade/ causeway are found within this area. • Celtis australis, southern nettle tree, naturalized along creeks, drives, on hill around house • Platanus x acerifolia, plane, specimens dotted along main BLH Loop Road • Olea europaea var.cuspidata (Africana) and on hills • Araucaria cunninghamii, naturalized over main house hill top / slope to its north, and SW of house • Eucalyptus tereticornis, forest red gum, native bush on hills/scattered paddock trees; also S of house • Brachychiton populneus, kurrajong, SE & SW of house on hill • Pinus roxburghii, chir pine • Ulmus parvifolia, lower drive around pond; large old tree S of house also • Ficus pumila var.pumila, on s/stone wall • Phyllostachys nigra, at base of drive where starts ascending to house • Doxantha unguis-cati, cat's claw creeper, all over the hill/up trees • Chlorophytum comosum, spider plant, ground cover N of house • Aloe sp. (tree form) N of house, (A.excelsa?) • Furcraea selloa, Mauritius hemp • F.s.'Aureo-Variegata', variegated • Aspidistra elatior, cast iron plant, pot NE of house, also under chir pine to NE • Agapanthus orientalis, Nile/African lily, N of house • Araucaria bidwillii, Bunya pine, S of house • Adhatoda vasica, vasika/Malabar nut, S of house • Aloe ciliaris, climbing aloe, on bird cage • Clivia miniata, Kaffir lily, ground cover S of house • Jacaranda mimosifolia, near well S of house • Rosa hybrids/cultivars, S of house • Selenicereus grandiflorus, queen of the night (climbing cactus), up hoop pine SW of house • Tecomaria capensis, hedge SW of house, clipped "boxes" on N verandah also • Platycerium superbum, staghorn fern • Acanthus mollis, bear's breetches, bush track S of house (to stable) • Gleditsia triacanthos, seeding along BLH Loop road between stables and main entry gate • Hoop pines • African olives • Celtis australis • Ligustrum ovalifolium, long-leaved privet, naturalized on hill/along drives • Plumbago capensis, on hill (satin bower bird nest amongst some, shown by Joan Downes) • Buxus macrophylla hedging along main drive once it climbs the hill to the house • Iris germanica cv.s, flag iris, S of house • Jasminium nitidum, on verandah
column • Hippeastrum hybrids/cv.s, S of house • Cheirianthus cheiri cv.s, wallflowers, S of house • Camellia japonica cv.?/Rothmannia globosa, tree gardenia (too far off to tell - SW corner of house • Plumbago capensis, Cape plumbago, low hedge E of front door • Macrozamia communis, burrawang (cycad), N of house in carriage loop • Nerium oleander cv., oleander, SW of house near drive (6-8m tall) • Alyxia buxifolia, sea box • evergreen oak (sent 1832 RBG - G.Macleay) -survives? • 1849 Annabella Boswell noted Crinums, pentstemons, Cape bulbs, Euphorbia, peaches, plums, figs • Camden Park nursery (1850s) supplied the following (it is unclear if any survive) • Magnolia grandiflora, evergreen /southern magnolia/bull bay (ex Camden Park) • M.denudata, Yulan • Bambusa nigra, black bamboo (I suspect that name is now Phyllostachys nigra) • Camellias • hoop pines • Bunya pines • funeral cypresses & Norfolk Island hibiscus An 1836 record of A.Macleay's garden at Brownlow Hill noted he had oranges, apples, loquants, pears, plums, cherries, figs, mulberries, medlars, raspberries, strawberries, gooseberries It is unclear whether there are any survivors.
Condition As at 6 August 2001, the site has high archaeological potential. Much of the colonial landscape and garden is still evident. Sub-surface remnants of previous agricultural structures and/or associated artefacts may still be within the boundaries of the original allotments. ;Flaggy Creek Quarry site: About 100 metres south of the Round House is a quarry in the Flaggy Creek bed, a tributary of the Mount Hunter Rivulet. The quarry was a source of Wiannamatta stone (advertised in the press of the 1820s - '30s as Cowpastures stone), a highly-figured mudstone used for paving (i.e. flagstones) at Brownlow Hill (the console table base, veranda and entrance hall flagging) and Elizabeth Bay House (the entrance hall and flagging, saloon stair and upper floor chimneypieces). The Camden Park portico columns are reputedly from this quarry. The quarry provides a rare instance of a surviving connection between early houses and the source of their materials and is an important archaeological site. Brownlow Hill has remained relatively unchanged since the 19th century, considering the constant pattern of farming, the scenic landscape setting and most of the Brownlow Hill estate and contents has remained largely intact.
Modifications and dates ;House Modification: The house at Brownlow Hill was originally built as two small separate wings of brick at right angles to one another, with a separate kitchen at the rear making up the third side of the Courtyard. By 1834 alterations were made transforming the house which was "now pronounced the best in the Colony." The two small wings were joined, forming an L-shaped building. The original roof endings are still to be seen beneath the present roof. Within the angles another section was then added to the east wing, On the right of the north elevation is a wing which was added by Jeremiah Downes, who bought the property In 1875. At that time the front door was replaced and a small portico built before it. A cellar is approached from the rear. In the 1890s a portico-ed entry way to the front door, and new Victorian front door, was added, along with a new wing to the west of the original house. John & Joan Downes made significant modifications in c.1961, installing two internal bathrooms in the eastern wing, a corridor connecting the entry hall with the eastern wing rooms leading to a relocated entry door, moved to be centrally placed on the eastern wing. An internal kitchen was also provided within the central wing of the house, including the removal of an internal wall between a former bedroom and scullery. A suite of works was undertaken to the main homestead in 2016-17. ;Round House/Monk's House: • 1960+ modifications (see history) • 2009+ modifications (see history). ;Landscape Modifications: • In the 1850s the property was leased for pig raising when much damage was done to the surrounding growth. In 1859, the property was leased by Jeremiah Downes. Brownlow Hill was sold to Severin K Salting and in 1862 was again leased to Downes who purchased the property from Salting in 1875. In the intervening period it was managed as a series of tenant farms • In the 1960s, a quarry was established on the western extremity on the property with minimal impact on the working farm.
Further information The general layout is well maintained but individual items and some overgrown areas need attention. The aviary is in urgent need of restoration. The outer garden, lane/ Loop Road and hedgerows are in need of some weed management, to retain significant views and vistas, and control spread, particularly of African olives and privet. The olives in particular are invasive as scrub elsewhere on the farm, although this is under management. The pond/dam wall is in need of repair and some reconstruction, to prevent further cracking and slumping. == Heritage listing ==