See CAO 95.32 http://flysafe.raa.asn.au/regulations/9532.pdf
Paragraph 8
An aeroplane, to which this Order applies, may be flown at a height of less than 500 feet above ground level, or 300 feet in the case of a powered parachute, if:
(a) the aeroplane is flying in the course of actually taking off or landing; or
(b) the aeroplane is flying over land that is owned by, or under the control of, the pilot; or
© the owner or occupier (including the Crown) of the land, or an agent or employee of the owner or occupier, has given permission for the flight to take place at such a height; or
(d) the pilot of the aeroplane is engaged in flying training and the aeroplane is flying over a part of a flying training area over which CASA has, under subregulation 141 (1) of CAR 1988, authorised low flying.
Except when taking off or landing, an aeroplane flown at a height lower than 500 feet above ground level, or 300 feet in the case of a powered parachute, must be at a distance of at least 100 metres horizontally from:
(a) a public road; or
(b) a person other than a person associated with the operation of the aeroplane; or
© a dwelling, except with the permission of the owner or occupier.
Section 2 Sub section 2 has them screwed, It is your responsibility to report the Incident to RAA/CASA
Regards
Mike