Where a redevelopment is changing the shape of an existing unit or Common Property, the CSD diagrams must clearly depict the spatial relationship between the estate interests being cancelled (associated with existing unit(s) or Common Property undergoing change), and new interests being create.
This means that the CSD diagrams must show the referenced estate boundaries of the cancelled titles where they do not coincide with the new titles. This requirement is set out in rules 9.6.3(h)(i) and 10.4.2(f)(i) of the Rules for Cadastral Survey 2010. Two examples are illustrated below:
Land from PU2 being added to PU1 (plan view)
Land from PU1 being added to Common Property (elevation)
Converting a stratum boundary to a permanent structure boundary
Where an existing unit boundary is being converted from a stratum boundary to a permanent structure boundary with the intention that the boundary is the same boundary then this fact must be made obvious to the CSD user. Reporting this information in the survey report or annotations on the CSD diagrams are two ways of addressing this issue.