Evidence and submissions
30The Court met on site with the parties the first morning of the hearing and heard from resident objectors. The owner of No. 97 Northwood Road supports council's refusal of the application and considers the proposal is too bulky and will impact on views from the upper storey of her residence.
31The owners of the adjoining premises to the east at number 101 also gave evidence to the Court and they are concerned about the increase in the width and height and bulk of the building and the impact on the water views obtained from their downstairs area. They expressed concern about the three-storey proposed dwelling and the height of the dwelling. In their opinion, the proposal should comply with the council's controls. They also expressed concern about the excavation for the proposed garage in terms of the stability of the rock wall on their western boundary that would disturb the soil below their swimming pool. They also expressed concern about the traffic on the right of carriageway, which in their opinion is of a minimum width and this will serve four parking spaces on the subject site. They also expressed concern about the large eucalypt on their property and the impact that the excavation for the proposed garage would have.
32In response to the council advertising the proposal eight submissions were received initially and seven submissions were received in response to an amended proposal.
33On behalf of the respondent Council, expert evidence was given by Mr Rajiv Shankar, senior planner of Lane Cove Council; and Mr Peter Maish, arborist. For the applicant Mr Jason Perica architect/town planner, and Mr Peter Castor arborist, gave evidence to the Court.
34The planning experts agree that he proposed dwelling complies with the 9.5 m overall height provision contained in the Dwelling House Code but does not comply with the 7 m control to the uppermost ceiling, or with the maximum two-storey limit in the code. During oral evidence, Mr Shankar , agreed that the exceedences are in the southwest corner, 1.22 m of the 7 m control , and in the north-west corner 0.92 m.
35Mr Perica states that the height requirements are contained in a code and not an environmental planning instrument and whilst this does not mean they should be automatically varied in his opinion the following factors support variation to the code's height controls in this instance because: the proposal meets the objectives relating to height in the code; the scale of the proposal is compatible with surrounding buildings and adjoining dwellings at 101A Northwood Road and 4A Birriwa Place contain 3 storeys and ceiling heights in excess of 8 m; the existing dwelling is 3 storeys in height and the proposal represents an extension of this level; the site and surrounds are steeply sloping and in such terrain compliance with height control is often difficult to achieve. Mr Perica said the Council itself varies the code's height controls in assessing DAs, and it is not a situation where the height limits have been strictly and slavishly applied, such that approval would set an adverse precedent. He is of the opinion the only impact is the view impact on number 101 and overall this impact is very minor.
36Mr Shankar considers the height is excessive, and the code requires dwellings to be no more than 2 storeys, except where the third storey is contained within a roof space. He also refers to the fact that the height of habitable rooms in terms of the Building Code of Australia can be a minimum of 2.4 and the floor to ceiling height in the proposal is excessive at 2.7 m. Mr Shankar is of the opinion that the height of the proposed garage is excessive and does not comply with the standards of the code. He is of the opinion that the garage appears to be two storeys and the loft is not contained within the roof space. However, on cross-examination, he conceded that the code expressly allows for a loft and in this case it is not suitable for habitation, but only storage. He also conceded that the height of the garage is compliant with the code, that is 3.6 m and the size of 55 sq m is also complied with. Mr Shankar expressed concern about the amount of excavation for the garage, although he conceded that there is no control in the code for the amount of excavation for an outbuilding.
37On the issue of impact on views the experts agree that the view impact relates only to views from 101 Northwood Road, and that the greatest impact is from the ground floor rear living area, in a standing position. Mr Shankar is of the opinion that the proposal does not achieve reasonable view sharing and is inconsistent with the objectives of the code, "to minimise disruption to existing views, or to achieve reasonable view sharing". Mr Shankar considers that while existing building is already three storeys, the increase in the size and the height of the third storey would exacerbate the impact upon views from the property towards the east at number 101, and while he does not consider these views to be iconic, he considers them to be of high value. He states that the impact upon views from 101 is from the main living area in a standing position and notes that the existing water views are not extensive from this level. He conceded on cross-examination that he based his view loss assessment initially on the fact that the height exceedence was greater and with the surveyor's markings he now notes the overall height is compliant. He also conceded that there were many examples since the code came into operation in 2002 of three-storey developments and Council has not strictly applied the code.
38From the exercise carried out on the site inspection, Mr Shankar is of the view that the total amount of water view that would be lost in a seated position is half, although he conceded that one can barely see the water when sitting now, but to lose 50% of the view is not significant. It was noted that Mr Shankar had not assessed the sitting position view previously in his report. On cross-examination, Mr Shankar also conceded that he had not mentioned the view from the upper storey in his report and this is substantial. Having regard to this he was then asked to describe the impact of the proposal on the views gained from the whole of the property and he said it would not be severe or devastating, but moderate and the impact is from the non-compliant element. With respect to the impact of the view, Mr Shankar's position has changed from that of his report where he described it as severe.
39Mr Perica on the question of view loss is of the opinion that the assessment of view loss must be balanced and while there is an exceedence of the 7 m ceiling height, the proposal fully complies with the 9.5 overall height and that a complying development would be significantly higher and create greater impacts with a ridge at 9.5 m, even with 7 m ceiling height compliance. He agreed on cross-examination that ceiling heights of 2.4 m as opposed to the proposed 2.7 m would lessen the impact but in his opinion the impact is acceptable, and he described the views from the ground floor at number 101 as filtered and obscured views, when sitting at the table with the pool fence forward of the view. In his opinion, there would be a loss of view from a sitting position of 25 to 30% of what views are available of the water.
40Mr Shankar on the other hand considers that from a standing position, some 40 to 45% of the view would be lost and from a sitting position, approximately half the view lost, whereas Mr Perica considers this to be less than 25% and accepts that there is an impact on views however, the overall impact is very minor in the wider consideration of view impacts on both levels of number 101. He agrees that the impact on views is from the main living area, mainly in a standing position and the existing water views are not extensive from that area.
41Mr Perica states that the best description of the views from 101 at Northwood Road, are contained in the submission from that property "At present, we enjoy a leafy outlook over the applicant's property filtered through shrubbery and trees". Mr Perica says that the view over the property will be maintained and it is true the main outlook is leafy and this leafiness will increase over time, to conceal the proposed roof from view from the ground floor and pool concourse of number 101. He further says that the views from number 101 are a combination of outlook, distant sky, district and water, filtered through trees and vegetation. He states that the proposal will have a minor impact on the water views from the lower pool concourse or ground level and will have virtually no impact on the views of the water from the first floor of number 101. Overall in his opinion water views affected are minor in proportional or percentage terms. He further states that ameliorative measures were proposed by the applicant, to improve views from number 101 (e.g. landscaping pruning). In this regard Council's bundle contains a copy of a memo dated 21 june 2010 from the owner of No.101 about the Avocado and Jacaranda near the south boundary and trimming and thinning the Melaluca and other vegetation to the west that have grown into the outlook from their house.
42In terms of the principles in Tenacity Consulting v Warringah Council [2004] NSWLEC 140. Mr Perica says that:
(a)While there is a concentration on water view impacts the broader outlook and depth of outlook is afforded by greenery in the foreground and mid ground (the other side of the bay) and sky. These elements constitute the broader outlook and view.
(b)in terms of what part of the property is affected the ground level of number 101 is the extent of any real impact. This relates to a pool concourse level and adjacent indoor space. There will be negligible impact to the upper level of that dwelling or expansive, tree filtered water views are available.
(c)the extent of the impact is considered minor from the ground level and very minor overall when view impacts from the whole of the property are considered
(d)in terms of the reasonableness of the proposal the proposal is reasonable in the context of all the planning controls, the physical context of the site and neighbouring dwellings and the design and siting approach to the extensions. This is the case notwithstanding some technical and relatively minor non-compliances with some of the height controls in council's code.
43On the contention that the application should be refused as it has the potential to be used as two dwellings this is premised on the basis that there are two kitchens and the arrangement of doors to the lower ground floor and ground floor can be accessed independently, together with the new double garage and onsite parking providing a total of four car spaces.
44Mr Perica states that the proposal is not for two dwellings, and that the kitchens have existed prior to the applicants purchasing the site and were shown as existing in an application approved by the council in 1997. The lower kitchen operates to service the yard and lower ground floor entertaining area. Mr Perica further states that while dual occupancy is permissible on the site, this is not proposed and that the layout particularly the internal lift does not suit a dual occupancy and the proposed car parking makes use of an existing garage and circulation space to provide convenient parking for occupants and visitors, because this is a battle axe allotment removed from the street by a steep driveway. The applicant is also prepared to accept a condition that the proposed dwelling not be used as a dual occupancy.
45The council contends that the excavation for the garage is excessive and would have an adverse impact on a number of trees and shrubs, and one eucalypt tree located on the property towards the east. Council also contends that the excessive excavation may impact adversely on the structural stability of the structures on the adjoining property at number 101.
46Mr Perica states that while the excavation is in excess of the code that is only if the code applies to outbuildings, and in his view it is not excessive in the context of overall excavation for the proposal. With respect to the impacts on trees and geotechnical matters, Mr Perica says this has been addressed by other experts and through conditions of consent. He accepts that the excavation exceeds 1 m in depth of the garage to a maximum of approximately 2.4 m in depth. Mr Perica states that there is negligible impact from the proposed garage on neighbours and that the proposed garage structure meets the objectives of the code, in that the garage has regard to the natural landscape and the amenity of adjoining properties and the proposed excavation has the benefit of reducing the height of the garage for adjoining properties.
47The question of the impact on number 97, Mr Shankar is of the opinion that there is not significant detrimental impact and Mr Perica considers the impact to be negligible.
48The planners prepared a further joint statement on the provisions of the 2009 LEP for Lane Cove gazetted in February 2010 and the Development Control Plan 2009. I now note that at the end of their first report they agreed that the savings provisions provided a determination of this application under the former regime by virtue of the savings provision. They also agreed that "the new plans are a relevant consideration under s79c , although the new provisions are such that no material new issues arise in relation to the court case, despite differences in definitions and the like in the new Plans".
49Under the LEP 2009 the maximum permissible floorspace ratio under the R2 low-density residential zone is 0.5:1 in cl 2.2 and the proposed development is 0.37:1. The control for maximum permissible height is 9.5 and the proposal is 9.74 and the LEP allows an architectural roof feature to exceed this if it does not contain floor space. An additional 1.5 m in height is allowed if there is a sub-floor. The provision for minimum landscaped area is 35% and the proposal provides 37%. The control for wall height is 7 m and the proposal on the north side is 5.8 m, however, on the south side, it is 9.23.
50The DCP 2009 requires a set back from existing trees that are greater than 5 m in height, to be a minimum of 3 m.
51The arborists provided a joint statement and concurrent evidence to the Court on the impact of the development on trees and the contention that the excavation for the garage would impact, in particular on the Sydney Red Gum . Mr Castor states that the depth of excavation is of less relevance than the lateral offset to the particular trees and the tree protection zone encroachments. In his opinion ample contiguous root breakout areas exist to provide for post development root growth to compensate for TPZ encroachment. Mr Maish considers that the proposed excavation of 2.4 m in depth for the garage, will alter the current growing environment of trees numbered 2, 3, 6 and 7 and that water and nutrient availability will be reduced, because of the loss of soil profile. He further comments that this is likely to have a negative impact on tree 7 in particular, given its maturity classification and size.
52The trees identified on the property and adjoining properties that may be affected by the location of the garage as shown on the plans are as follows:
Tree 1 Avocado to be removed as within the footprint of the proposed courtyard. Mr Maish raises no objection to the removal of this tree given its untenable position in the garden.
Tree 2 Jacaranda , this tree requires an arborist's assessment during earthworks, Mr Maish states that it should be retained. He also notes that it could be removed under the TPO if root damage is severe.
Tree 3 Lemon scented gum . It is agreed that this is of high significance and should be retained. Mr Castor said that the closest excavation is 3.5 m and considers there is ample root breakout areas for post development root growth. Mr Maish considers the development is unlikely to result in the decline or loss of the current good heath of this young and vigorous tree. However available root zone area will be reduced because of excavation.
Tree 4 Mulberry, located on neighbouring property, the experts agree that this will not be impacted and also note that is exempt from the Lane Cove tree preservation order and the works are beyond the TPZ.
Tree 5 Jacaranda located on neighbouring property, the experts agree that the development will not impact on this tree.
Tree 6 Cotton palm . Mr Castor notes that it is of high significance and has a high retention value. Mr Maish notes that no mechanical damage to this tree would occur, however growing environment will be altered, but negligible.
Tree 7 Sydney Redgum , located on neighbouring property. The experts disagree on the impact to this tree. Mr Castor considers the tree is of exceptional significance and should be retained. The closest excavation being approximately 6 m and that there is ample contiguous root breakout areas to provide for post development root growth to compensate for TPZ encroachment. Mr Maish states that the growing environment will be altered because of the reduced root zone area and the 2.4 m depth of excavation may draw available water from the retained soil profile. He states that this is a mature tree of approximately 100 years old and any changes to its growing environment will result in decline of the health of the tree.
Tree 8 Argyle Apple located on neighbouring property. The experts agree the development will not result in a negative impact on the health or current structural integrity of the tree. However, Mr Maish says that because of the 60 lean, the tree will fail and the proposed building is within the target area of the tree. Mr Castor said that he tree lean is likely to date from the neighbours' pool construction, and there is ample contiguous root breakout areas to provide for post development root growth to compensate for TPZ encroachment.
Tree 9 Frangipani , the experts agree that this is of moderate to low significance. However, it can be transplanted to the north side of the existing drive as shown in the plan.
Shrubs. Mr Maish notes that these are not covered by the TPO, and these need to be removed to allow the proposed garage construction.
53Figure 5 shows the location of the above trees, in relation to the proposed double garage.
54The main area of disagreement between the arborists is that Mr Castor considers that the excavation for the proposed garage will have a negligible impact on the Sydney Red Gum , tree 7 and having regard to the Australian standard, the tree would remain viable in terms of the tree protection zone. The radius of the tree is some 10.2 m and the garage encroaches into this, being a distance of 6 m, for a sector that he estimates to be less than 10%. Mr Maish was asked whether there was anything else in the TPZ area impacting to which he responded, "No not from mechanical damage to the root system of the Sydney Red Gum ." Mr Castor said that the minor encroachment of less than 10% is outside the structural root zone, and that this area could be compensated for future root growth under the driveway, because trees are opportunistic.
55Mr Maish however said that there would be no compensation to the area excavated because of the age of the tree and that any change would be more than a negligible impact. He further stated that the excavation will change the water regime. He agreed that there would be no impact to the structural roots and that no roots would be larger than 6 to 8 mm and the cutting of these roots is not of concern to him. Mr Castor says there will be no interception of the overland flow with the excavation as it is downhill of the tree.
56Mr Maish said that planting of 20 Lilli-pillies along the boundary is also of concern in terms of the accumulation of changes leading to significant change for the Sydney Red Gum.
57Mr Tomasetti put to Mr Maish that the area of incursion is only 5.5%, 18 sq m and with a 10.2 radius, this provides for 320 sq m and that there is other infrastructure within the TPZ that was constructed prior and some post the tree, such as the swimming pool at number 101, and that this had not created any impact on the health and vigour of the tree and Mr Maish agreed that the tree has withstood these other works. Mr Maish is also concerned about the effect on the Argyll Apple and the negative impact on the landscape.
58With respect to the Jacaranda that is in close proximity to the retaining wall for the stairs from the garage the previous report by Bradshaw described this as of poor form and if removed the Lemon Scented Gum would prosper. It was also noted that removal would be allowed under the TPO.
59The question was asked of Mr Maish, if there are no further works or site disturbance for landscaping, in the TPZ, then the 5.5% of the TPZ that is affected by the position of the garage it was agreed is correct. Mr Castor considers that the tree is capable of withstanding the excavation and construction of the garage, whereas Mr Maish disagrees because of its classification of its maturity.