(i) Contribution other than the trees, Act or omission by applicant:
1. Guttering and internal water damage. With regard to water damage inside the Newmans' home, the Blackbutt is likely to be the greatest cause of leaves and twigs in the roof gutters, and has been the cause of tiles broken by falling dead branches. However, the Bunya Pine and the nearby large River Sheoak on Mrs Eizenberg's property are likely to make a substantial contribution to debris in the guttering. The Newmans say they have not installed gutter guard but they clear the gutters every three months. Mr Castor notes in his report that there are only two downpipes for the whole of the Newmans' roof and that the one on the southern side is near the trees. He considers that the southern downpipe would rarely flow due to leaf and twig build-up in the gutters, and that overflow of the gutters is likely during heavy rain events, possibly causing overflow into the eaves and wall cavity. Mr Mckerron's report does not address internal water damage, while Mr Bonner's report notes internal mildew stains but does not explain their cause. The Newman's claim for compensation includes proposed carpet replacement, gyprock and paint, roof insulation and roof gutters. On the evidence provided, and the balance of probability, I find that the internal water damage is likely to be caused by failure of the roof guttering and downpipes, at least in part because of blockage by tree debris.
2. The Court decided in Barker v Kyriakides [2007] NSWLEC 292 , that it was not appropriate to order the removal of the tree or significant interference with the tree on the basis of its dropping of leaves, twigs and the like on the applicant's property. Similarly, I would not order removal of the Blackbutt on the basis of its debris. However, I would propose to order pruning of deadwood to prevent tile damage, and in this case, pruning of overhanging branches as Mrs Eizenberg is agreeable to pruning of smaller branches back to the boundary, and Mr Castor's report supports "reduction pruning" 'of the canopy sections directly overhanging No. 31'. The River Sheoak is not one of the trees in this application, and though I asked their intention regarding it at the hearing, the Newmans did not seek to have it added to the application.
3. In relation to compensation for internal building damage and carpet damage by water, I am not sufficiently satisfied that the damage was caused by the tree, particularly as no specific event causing the damage has been identified. Also, I consider from the Newmans' own evidence, that they have been aware of the need to keep their guttering effective, and have carried out regular cleaning, but not ensured that cleaning or the guttering system was adequate for the conditions. Lastly, the compensation sought for internal damage has not been clearly specified and quantified. For those reasons I find that it is not appropriate to order compensation for the internal damage.
4. Pathway damage. Mr Mckerron, Mr Bonner, Mr El-Zahoul and Mr Castor all find that the Blackbutt is the cause of damage to the adjacent path. On that basis and my own observation, I find the path has been broken and lifted by the Blackbutt.
5. The Newmans say they first noticed damage to the path in 1983. They say that they first advised Mrs Eizenberg of the problem verbally in the mid 1980s, and in writing in 2007. They provide four statutory declarations, from neighbours and their son. Two declarations state that those persons were present when Mr Newman spoke with Mrs Eizenberg about: problems caused by the trees, some 15 years ago (Mr Foster); and the tree causing damage to his house and property, 1999 and 2005 (Aaran Newman). Mr Hickson who is employed to tend the Newmans' garden, states that he has drawn Mrs Eizenberg's attention to the large Gum that has broken the concrete path during "the recent 5+ years". Mr Kieler who lived at 35 Green Point Road states that he and Mrs Eizenberg were both aware of a tree creating damage to the Newmans' property, but he does not give a timeframe for that awareness.
6. Mrs Eizenberg claims that she has no recollection of that verbal or written notice of damage. I note the disagreement of the parties on this point, but am persuaded by the statutory declarations that Mrs Eizenberg has at least been on verbal notice for 15 years. On that basis I would propose to order that Mrs Eizenberg pay some proportion of the cost of repairs to the pathway.
7. I find however, that the Newmans have been careless to be aware of the lifting pathway and its increasing hazard to persons for 26 years without doing any repair. I accept that communication with Mrs Eizenberg may have been frustrating and without result, but that does not justify them neglecting maintenance and repair of their own property for such a long period. I also consider that early repair of the pathway may have been cheaper than that required now, and may have avoided ongoing damage.
8. Mr Castor's report states that in his opinion, it is not conclusive that the Blackbutt needs to be removed.
9. On the circumstances of this case, I would propose to order that the Newmans and Mrs Eizenberg now share the cost of the pathway repair equally, and I would not propose to order removal of the Blackbutt.
10. Damage to house walls and piers . Both Mr Mckerron and Mr Bonner find that the Blackbutt is the cause of this damage. They also both find that piers have "dropped" or "show signs of movement and settling", but neither states that they found any tree roots under the wall, under the piers or visible on the ground under the house. At the hearing, Mr Newman advised that the damaged pathway had not been removed to allow inspection of the ground surface or digging of that area between the tree and the house for roots.
11. The Newmans say that they first noticed cracks in the external and internal southern walls in 1995, and dropping of the piers under the southern part of the house in about 2002.
12. Mr El-Zahoul addresses the external damage only, and concludes it is caused by soil erosion and settlement of the building which is on land that is very steep. At the hearing, he pointed out that the lifted path directs water towards the building, and the gap between the path and wall allows access for the water to erode soil from under the building.
13. Mr Castor inspected the subfloor area of the Newmans' house adjacent the Blackbutt. He found there was no sign of roots having grown under the double brick wall or its stepped footing. In relation to the "dropped" pier, he states "This movement in the pier is not consistent with direct root contact." He also states that "Indirect root influence on soil shrink/swell soil volume is not likely on this site as the soils are predominantly sandstone based and so not reactive."
14. My own observation accords with Mr El-Zahoul, that there is a gap between the damaged path and the wall. I also looked along the line of the wall from the western end, and it did not appear to be bowed in. On the basis of those observations, I favour Mr El-Zahoul's explanation that damage to the building is caused by soil erosion and building settlement. Further, Mr Castor has investigated but found no tree roots under the building; he has identified the soil type, and explained why damage to the piers is not likely to be by tree roots. For those reasons, I prefer the conclusions of Mr El-Zahoul and Mr Castor, that the Blackbutt is not the cause of the observed building damage.
15. On that basis, and with regard to my discussion above about responsibility for property maintenance, I would not propose to order any compensation for building damage to walls, footings or piers, and I would not propose to order removal of the Blackbutt.
(ii) Applicant's or tree owner's steps to prevent or rectify the damage:
As noted above, the Newmans have given verbal notice to Mrs Eizenberg of damage and problems for at least 15 years, but Mrs Eizenberg appears to have taken little or no any action to rectify or prevent damage. The Newmans have done some pruning of the Blackbutt near their roof, and recently obtained two engineering reports on the house and pathway damage. Mrs Eizenberg has obtained Mr Castor's tree report, and one engineering report on the house and pathway damage.
(i) Injury to persons
(i) Contribution other than the trees, Act or omission by applicant:
In relation to the Blackbutt, the Newmans' neglect over many years to repair damage to the pathway has allowed a trip hazard to remain on their property.
(ii) Applicant's or tree owner's steps to prevent injury:
Mrs Eizenberg has obtained Mr Castor's tree report .
(j) Other matters relevant in the circumstances of the case:
(1) It seems that Mrs Eizenberg has some financial hardship. Although she lives on what appears to be expensive waterfront land, her house is old and modest, and does not appear to be well maintained, and the entry path is basic to the point of being dangerous. Additionally, she provided a receipt from Council for payment towards tree lopping; that Mr Hoff explained was part of a Council scheme to assist tree owners with financial difficulties. The proposed work in this case did not go ahead, and the money was refunded.
(2) The parties came to some agreement at the hearing, and proposed consent orders as follows:
a. Mrs Eizenberg shall remove the Bunya Pine, and prune overhanging branches (but not branches larger than 15 cm diameter) of the Blackbutt back to the boundary, at her cost, within six months;
b. The Newmans shall repair the pathway at their cost, within six months, in a manner to avoid problems with the Blackbutt for at least 10 years, and to be at least 100 mm clear of the trunk and 50 mm clear of roots of the Blackbutt;
c. Mrs Eizenberg shall have the Southern Mahogany further inspected at her cost within six months, to determine if it is suitable for long term retention. If it is suitable for long term retention, all dead wood larger than 20 mm shall be removed within that six months at her cost. If due to its structure or condition, it is not suitable for long term retention, it shall be removed at her cost within a further three months.
Conclusions
24 I find that the Bunya Pine should be removed because of its increasing risk to property and persons.