The Commissioners' Reasons for Decision
20Before the Commissioners, it was alleged that the root ball caused actual damage to the wall, which was located entirely within the applicant's property, and that it constituted a risk of injury to persons in the rear yard of the applicant's property.
21Expert engineering evidence, and a site inspection by the Commissioners, confirmed that the root ball had regrown to and across the boundary, to exert pressure on the wall.
22The Commissioners considered that, if that pressure were not removed, cracking of the wall would continue to be exacerbated (par [7]), but they were, however, not persuaded by submissions by the respondent that the wall had not been constructed in accordance with the engineering drawings. They were satisfied that the wall was adequate, and concluded that the jurisdictional test arising under s 10(2)(a) of the Act was engaged. They said (at [8]-[9] - emphasis mine):
8 Although Mr. Blackwell, solicitor for the respondent, endeavoured to persuade us that the wall had not been constructed in accordance with the engineering drawings (and was, thus, at least in part, if not in entirety, responsible for the damage as a consequence of the inadequate construction), we are not persuaded that this is the case. We have, in evidence, photocopies of the plans for the applicant's renovation - including the structural engineering plans. Although, as earlier noted, the engaged piers for the southern element of the wall are located on the opposite side of the wall to that depicted on the plans, we do not consider that this can found a submission that the wall is structurally inadequate. However, as will be discussed later, this is a matter to be taken into account in the orders that we have made as a consequence of our conclusions.
9 We are satisfied that the wall is adequate as we have the uncontradicted structural inspection certificates that were issued during and after the construction process. In addition, although Mr. Blackwell submitted that the plans showed a double skin brick wall, and thus a wall 200 mm thick to full height, a correct reading of the plans shows a lower portion of the wall constructed to that thickness with the upper portion being of single brick thickness. The actual construction of the wall, as able to be viewed by us, was not inconsistent with compliance with the plans in this regard.
23As at the date of the hearing before them, the Commissioners were not satisfied that the trees were likely to cause any personal injury, and they also came to the view that further root pruning should not impact their stability (par [11]).
24The Commissioners said (in pars [13] and [14] - again emphasis mine):
13 ... it is not reasonable to require retention of the trees unless we are able to be satisfied that the damage to the wall could be rectified; the trees retained; and future damage to the wall avoided.
14 In this instance, it is perfectly clear that, had the root ball of the two palm trees been pruned to the boundary, on a regular basis, and had the applicant's wall been constructed at the location where it is presently located but with the engaged piers on the applicant's side of the wall rather than on the respondent's, as was proposed by the approved plans, damage to the wall would not have been occasioned. As the respondent had not taken any steps, on the evidence available to us, to prune the root ball on a regular basis, the inevitable consequence was, we accept, that the damage that has been caused to the wall would be so caused.
25The Commissioners concluded (at [17] and [18] - again emphasis mine):
17 ... a combination of the fact that the applicant's engineering evidence, including the inspection certificates, demonstrate that the wall is constructed as required for the purpose for which it is intended - namely as a boundary fence between properties and, on the other hand, the fact that the respondent has no right to permit the roots of her trees to intrude onto the applicant's property in a fashion that causes damage to this otherwise properly constructed wall.
18 As a consequence, we have concluded that it is appropriate to make orders that will require the present and future pressure problems caused by the trees' root balls to be removed by root pruning - both immediately in order to permit reconstruction of the wall (but in the fashion we have determined as being appropriate and in compliance with the engaged pier design originally proposed) together with requiring the respondent to meet the costs of the reconstruction of the wall but making allowance for the respondent's financial circumstances and thus allowing a period of time within which reimbursement is to take place.
26The Commissioners determined that the wall would need to be demolished prior to the required root pruning, which they expected would remove the likelihood of future damage to a reconstructed wall, provided it was reconstructed at the location and in the form provided in the orders. They noted (in [20]):
However, to permit any pruning of the root ball of the trees, in the immediate future, and thus to permit reconstruction of the wall (and space for ongoing maintenance root pruning), because of the location of one of the engaged piers that has been constructed on the western side of the existing wall between the two properties rather than on the eastern side as required by the plans, the wall will need to be demolished prior to the required root pruning (ordered below) being undertaken. To guard against the eventuality that the respondent may not undertake the required root pruning to facilitate the reconstruction of the wall in the form we have determined, within a reasonable period of time, we propose to reserve the right for the applicant to re-approach the Court for further orders concerning the trees if necessary.
27Order 9 noted that the quotation for demolition and reconstruction was in the sum of $25,135, inclusive of GST. The respondent provided no evidence alternative to that estimate, but was unemployed and had limited financial resources, apart from her significant capital asset in her property. Extended time was proposed by the Commissioners to meet her financial circumstances. (The evidence includes a receipted account, as required by Order 11, in the sum of $23,335).
28The Commissioners opined (in [25]) that the orders they proposed would provide certainty to both parties, and:
...a timetable within which the various steps are required to be undertaken. In the event that the respondent does not meet her obligations pursuant to order number two, the orders provide for the applicant to have liberty to re-list the matter for further consideration of alternative orders, including further consideration of whether orders ought be made for removal to the trees; if the applicant does not meet the deadlines provided in orders numbers three and five, all remaining obligations on the respondent will be discharged.