NSW
Highrise. We were told not to hang our washing on the balcony. The strata committee had to provide a drying area for that rule to be obeyed. I had my dryer on the balcony as I had fake plants on the balcony rails to stop the lights from the driveway shinning into the bedroom at night. The floors 15 to 27 hung washing on the balcony but could not be seen from the entry road.
Qld
Low-rise. There is no drying area provided around the building, and we just hang our washing on small free-standing clothes lines, we have 100 units in our building. No body seems stressed about other people hanging their washing on their own balcony.