9 The respondents submitted that: - (i) the class 2 proceedings were different from most such proceedings, which generally involve an appeal by a person against the decision or action of a regulatory authority, (ii) these proceedings involved a developer and a strata corporation (and owners of lots within a strata scheme) disputing their private rights and obligations, (iii) the class 2 and class 4 proceedings were linked, (iv) the legal issues raised by the respondents were not "clearly dominant or separable" (Bonnacorso at [15]), (v) the class 2 proceedings involved little evidence or time beyond the class 4 proceedings, (vi) there had been no disentitling conduct by the respondents, (vii) the respondents were wholly successful, and (viii) if any apportionment were considered appropriate, the applicant had grossly overstated the significance of the issues on which the respondents failed.
10 Spigelman CJ identified the principles applicable to proceedings subject to Pt 16 r 4 in Sansom. Similar issues were discussed in Thaina Town (On Goulburn) Pty Ltd v Sydney City Council (2007) 156 LGERA 150, although the proceedings in that case were not subject to the presumptive rule. Rule 3.7(2) 7 is in the same terms as Pt 16 r 4. Rule 3.7(3) provides examples of circumstances in which the presumptive rule against any order for costs might be displaced. Rule 3.7(3) is neither definitive nor exhaustive. Accordingly, Sansom and Thaina Town should be considered when dealing with the costs of the class 2 proceedings.