All over the north and east coast, ranging from just east of Broome WA to north of Canberra. Colour forms differ from place to place, but are not restricted i.e you could get a green phase in NT.
- Golden Phase: Northern Territory
- Black and Yellow: North Queensland
- Green Phase: South-East Queensland
- Blue: Far North Queensland and SEQ
- Hyper Melanistic: Townsville and some islands situated nearby, such as Magnetic Island.
Common Tree Snakes are dinural and can be found in near wetlands or anywhere with dense tree systems.