Findings
28On the evidence of the photographs in the application and Mr Ford's statement, I am satisfied that a large woody root from one of the Eucalypts that was growing on the respondent's land damaged the applicants' sewer pipe. It is reasonable to assume that the damaged pipe provided access and opportunity for root growth within the pipe. I accept Mr Walker's evidence that he found no evidence of other defects or signs of incorrect installation of the PVC pipes.
29Therefore as s 10(2) is satisfied, the Court must consider what, if any, orders should be made. However, before making orders, the Court must consider a number of discretionary matters in s 12.
30Of relevance are the actions of both the applicants and the respondent. I agree with the applicants' position that there is insufficient evidence to find the conifer contributed to the blockage. It is entirely reasonable that roots would be found on the respondent's property in the vicinity of the tree. Mr Searles is clearly stepping outside his area of expertise with his assumptions regarding the nature of the roots and the cause of the plumbing problems, as he is neither a plumber nor an arborist.
31In regards to the actions of the applicants in drawing the issue of potential root incursion to the notice of the respondent, there is no evidence to support this. It would seem to me that as their solicitor referred to emails and other correspondence it would have been possible, and appropriate, to include that material in the evidence. The only correspondence to prove prior notice is in regards to the falling of leaves and branches.
32While I accept that a major blockage in a sewer system is something to be acted upon quickly, I consider it unusual that when such a large root was discovered, the respondent's agent was not notified immediately. The respondent was first notified at least six weeks after the event and the completion of the works. I accept the respondent's submissions that the company was denied the opportunity of having their agent or a plumber inspect the situation, discuss the options and or obtain an alternative quote. While the outcome may have been the same (on the face of it, Mr Walker's approach seems logical) that remains an unknown as there was no second opinion sought.
33I find that the Tree Dispute Principle in Black v Johnson (No 2) at [15] is not especially relevant. This principle states:
15 The existence of a tree prior to the construction of a structure which has subsequently been damaged by the tree is not a matter likely to be taken into consideration on the question of whether or not some order should be made for interference with or removal of that tree or other remedial work. On that question, the seriousness of the damage and any attendant risks are the primary matters for consideration. If interference with or removal of the tree or other work is warranted because of the extent of the damage the tree has caused or risks now posed by the damage, the fact that the tree was already growing in the vicinity at the time the structure was built is a matter which may be relevant and appropriate to take into account on the question of who should undertake any work and/or apportionment of the cost of such work. However, it will also be relevant to consider whether or not the tree was self-sown or was planted. If it was planted, consideration will need to be given to the appropriateness or otherwise of:
the type of tree planted; and
the suitability of the location in which it has been planted.
Equally, it will be relevant to consider whether the choice of location for the structure was unnecessary or avoidable or, on the other hand, if it would have been an unreasonable constraint on the development potential of the site had the existence of the tree limited that potential.
34In this matter, it is clear that the trees were present when the applicants purchased their property and subsequently built their house. From the photographs, they appear to be self-sown remnants of the original vegetation. The sewer was constructed in PVC rather than clay pipes and therefore root incursion would be considered unlikely. The location of the sewer may have been determined by the location of the main. I agree with Mr Hourigan that the installation of a root barrier at that time would not have been common practice. Therefore, I don't agree with Mr Boesen that this principle assists his arguments regarding the sharing of costs of the rectification works.
35With respect to the respondent's counter claim that the applicants should meet half the cost of removing the trees, I agree with the applicants' position that the removal of the trees was entirely at the discretion of the respondent. The respondent chose to remove all seven trees even though only three trees appeared to be relatively close to the applicants' dwelling. The respondent elected to remove the trees rather than consider an alternative such as the installation of a root barrier. While I accept that the applicants requested the removal of the trees, the respondent was under no obligation to do so. Therefore that element of the respondent's alternative orders is rejected.