NSW Fair Trading has some great independent information for DV, ending and starting your lease:

Assistance in Domestic Violence situations

Who can make a domestic violence delcaration
Who can make a Domestic Violence declaration

Terminating a tenancy in circumstances of domestic violence.
Competent Person Declaration Form

Terminating a tenancy in circumstances of domestic violence.
Dependant Child Declaration Form

General Information

Starting a lease/ tenancy
Starting a Tenancy

Ending your lease/ tenancy
Ending a Tenancy