44 Based on the above conclusion it becomes strictly unnecessary to decide whether it is open to the applicant to wall-off the south east corner of the building to effectively exclude it from the planning unit that will be used for the purpose of a refuse transfer station and, by this means, ensure that the planning unit is more than 30 metres from land which is in a residential zone. However, given the focus on this issue at the hearing, we will set out our findings for the benefit of parties.
45 In our view, the circumstances which apply in Rossi Recycling Pty Ltd v Maroondah City Council can be distinguished from the present circumstances. The findings of Member Rickards in that case were that a site is not necessarily identified by title boundaries and it is not uncommon that a 'site' in planning terms occupies less than the whole of the allotment on which it is situated. We agree that the separation distance set out either as a condition in the table of uses for a zone or in the table to clause 52.10 should be calculated from the boundary of the zone to the boundary of the land being used for the purpose, and not necessarily the title boundary. However, the site must be a logical entity in planning terms, not an artificial device contrived to exclude the need for a planning permit or compliance with other planning controls. The concept of the 'planning unit' is well recognised in planning law and practice. What the planning unit may be in any case will depend upon the facts. Depending on the facts, it may be the whole of one or more lots; it may be the whole of the land in a title or only part of the land. But its determination will be practical rather than an artifice to avoid planning controls or rob the Tribunal of jurisdiction.
46 In Rossi there was a lease of part of the land within a title, which the Tribunal accepted as being the planning unit for the purpose of calculating the threshold distance. However, the lease was between parties at arms length. In the present case, the small triangular section of land to be walled off is not capable of separate occupation or use and the proprietary rights would be in common with, not separate from, the remainder of the building and site.
47 The situation is not dissimilar to that discussed by Justice Morris in A R Stella and Partners v Whittlesea City Council[5] where he was considering the same condition applying to industry in the table of uses in the Industrial 1 Zone to the condition presently under consideration. He said: