Unfortunately a CAAP is only advisory, as the preamble says (bolding mine),
The information contained in this publication is advisory only. There is no legal requirement to observe the details as set out. The Civil Aviation Regulations detail the legal requirements that must be complied with in relation to use of areas for take-off and landing by a helicopter. While there may be a number of methods of ensuring that the requirements of the Civil Aviation Regulations are met, this CAAP sets out criteria which ensures compliance with the Regulations. The CAAP must be read in conjunction with the Civil Aviation Regulations.
Have not bothered to chase down AIP, CAR or any other regulatory/legal angle as to what landing sites require.