St. Thomas' is the only extant example of a reasonably intact, late 1830s Gothic Revival, rural Anglican parish church in New South Wales. Its cemetery contains some important early monuments, dating from 1839 and the graves of members of prominent local families. The golden stone church, with attendant cemetery and gravestones, has a considerable aesthetic impact when glimpsed from Mulgoa Road (now St. Thomas' Road). The picturesque graveyard of clustered headstones and notable classical sandstone monuments, predominantly of the Cox family, is on a sloping site alongside, bordered with eucalpyt saplings. (from the NSW State Heritage Register statement of significance)