It is owned and managed by Bush Heritage Australia (BHA), which purchased it in 1999, and it is listed on the Register of the National Estate.

[2] The new block of land features a large and healthy example of White Box-Yellow Box-Blakely's Red Gum Grassy Woodland,[2] an ecological community classified as Critically Endangered in NSW.

[3] Tarcutta Hills protects the largest area of intact grassy white box woodland in Australia.

[4][5] The reserve is part of the South-west Slopes of NSW Important Bird Area (IBA), identified as such by BirdLife International because of its importance for the conservation of swift parrots and superb parrots.

[6] Some of the plants that have a habitat here are White Cypress Pine, Small-leaf Bush Pea, Honeypot, Many-flowered Mat-rush, Kurrajong.