Below are links to separate pages with information to consider, when planning nest box installations.
Topics include installation height, types of bedding to provide, which side of a tree to install a nest box, whether privacy is required for different species, what types of predators may impact nest box occupants, and how to manage potential predators and unwanted nest box competitors.
Some other helpful resources:
Build your own nest box: a guide for Western Sydney (Greater Sydney Local Land Services): https://www.wires.org.au/wildlife-info/wildlife-factsheets/Wildlife-Nest-Boxes-LLS.pdf
Nest Boxes for the Gippsland Region (East Gippsland & Maffra and District Landcare Networks): https://egln.org.au/wp-content/uploads/2013/07/Nest-box-booklet.pdf
Nest boxes for Natives (Birds Australia): http://birdlife.org.au/images/uploads/education_sheets/INFO-Nestboxes-nativebirds.pdf
Yellow Box Woodland Nest Box Project (Connecting Country): https://s3-ap-southeast-2.amazonaws.com/connectingcountry/press/wp-content/uploads/2018/01/03130248/NestboxFieldGuide_FINAL.pdf
Nest Box and Hollow Habitat Assessment Teacher Information Pack (Government of South Australia, NRM Education): http://www.naturalresources.sa.gov.au/files/faa91938-4acf-4877-a4a3-a27a00dc3a49/amlr-me-schools-terrestrial-birds-nest-boxes-hollows-habitat-ass-gen.pdf
Wildlife Notes, Nest Boxes For Wildlife (Land For Wildlife, WA): https://www.dpaw.wa.gov.au/images/documents/conservation-management/off-road-conservation/LFW/Nest_Boxes_for_Wildlife.pdf
Bush Futures Nest Boxes For Wildlife (Tweed-Byron Bush Futures Project): https://www.tweed.nsw.gov.au/Documents/Environment/Bush%20Futures/TSC01135_Nest_Box_Manual.pdf