Original sentence: However the NSW government intervened by permanently protecting it with a permanent conservation order.It then passed into private ownership and has been restored by the owners.It was later used as a hospital by the Salvation Army but fell into disuse by the late 1970s and, in the early 1980s, a development consortium applied to demolish the house
Edited sentence: In the early 1980s, a development consortium headed by Alan Strachan sold off the grounds, and then applied to demolish the house, however the NSW government intervened by protecting it with a Permanent Conservation Order.It then passed into private ownership and has been carefully and lovingly restored by the present owners.It was later used as a private maternity hospital by the Salvation Army but was closed by them some time in the 1970s and fell into disuse by the end of that decade