The valuation approach
59It is well established that, if comparable sale are available, their direct comparison should provide the conventional method of valuation (Marroun v Roads and Maritime Services [2012] NSWLEC 199 at [196], following Graham Trilby Pty Limited v Valuer General [2008] NSWLEC 217 at [41]; Redeam Pty Ltd v South Australian Land Commission (1977) 40 LGRA 151 at [156], River Bank Pty Ltd v Commonwealth of Australia (1974) 31 LGRA 244 at [484].
60The comparable sales method of valuation comprises four sequential steps, summarised by Sheahan J in Marroun at [197] and followed by this Court in Tenstat Pty Ltd v Valuer General, Woolworths Limited v Valuer General [2012] NSWLEC 1361 at [36], Adams v Valuer General [2014] NSWLEC 1005 at [29] and Chircop v Transport for NSW (2014) NSWLEC 63 at [35]:
Such a direct comparison process requires the accumulation, analysis, adjustment, and application, to the subject site, of genuinely comparable sales.
61A Court depends upon the established expertise of valuer witnesses called on both sides of the case (Marroun at [197]).
62As Sugerman J observed in Bingham v Cumberland County Council (1954) 20 LGR (NSW) 1 at [18,19]:
The valuer, in arriving at his opinion in these difficult matters may have to draw upon his general knowledge and experience, including perhaps experience in other situations which, although lacking in complete comparability, may yet provide an experienced valuer with guidance and suggestions as to the general approach which may be made and as to considerations which may become relevant.
63Further, the judicial valuation task is not one of strict adherence to precise arithmetical calculations but is a common sense endeavour satisfactory to the mind of the Court (Commonwealth v Milledge (1953) 90 CLR 157 at [162]).
64Indeed, as stated in Electricity Commission of NSW v Arrow (1994) 85 LGERA 418 at [419] and which may be capable of application to both the expert witness valuer and the judicial valuer:
Valuation is not a science. It is an imprecise, opinionative activity involving the consideration of many variables, sometimes with equally legitimate outcomes.
65In Taylor v Port Macquarie-Hastings Council [2010] NSWLEC 113, Biscoe J stated at [11]:
In the field of judicial valuations, the task is ultimately evaluative. Within limits, courts do not require every step to be separately justified." Roads and Traffic Authority of New South Wales v Hurstville City Council [2001] NSWCA 11, 112 LGERA 223 at [50]. As Isaacs J said in Spencer v the Commonwealth [1907] HCA 82; (1907) 5 CLR 418 at 442 quoting the Privy Council in Secretary of State for Foreign Affairs v Charlesworth, Pilling & Co [1901] AC 373 at 391:
It is quite true that in all valuations, judicial or other, there must be room for inferences and inclinations of opinion which, being more or less conjectural, are difficult to reduce to exact reasoning or to explain to others. Everyone who has gone through the process is aware of this lack of demonstrative proof in his own mind, and knows that every expert witness called before him has had his own set of conjectures, of more or less weight according to his experience and personal sagacity. In such an inquiry as the present, relating to subjects abounding with uncertainties and on which there is little experience, there is more than ordinary room for such guesswork; and it would be very unfair to require an exact exposition of reasons for the conclusions arrived at.
66It is well established that the Court as judicial valuer must 'do the best it can' (Sutherland Shire Council v Sydney Water Corporation [2008] NSWLEC 303 at [96]), considering all relevant factors and making a judgment about them, "a 'best guess' perhaps" (Liverpool City Council v Commonwealth of Australia [1993] FCA 539; (1993) 46 FCR 67 at [83]).
67Effectively, as judicial valuer doing the best it can, the Court considers the building blocks for valuation provided in evidence tendered together with its own inferences and inclinations of opinion, being more or less conjectural, to determine the valuation as a common sense endeavour satisfactory to the mind of the Court.
68The first step, being the accumulation of potentially genuinely comparable sales, seeks to identify and establish a pool of relevant comparable sales from which information may be deduced concerning the value of the subject property (The Trust Company Limited v Minister Administering the Crown Lands Act [2012] NSWLEC 73 at [110,111]; Marroun at [198]; Tenstat at [39]; Adams at [32]).
69Generally, the competing parties produce lists which the Court must sift to identify some which are "truly comparable", or a "reasonably representative" sample, and "relevant and sufficient in volume" (Maurici v Chief Commissioner of State Revenue (2003) HCA 8; (2003) 212 CLR at [111,121]; Marroun at [198]).
70Where the comparable sales differ in substantial ways from the subject property, a process of reasoning is required to establish their utility or otherwise (Leichhardt Municipal Council v Seatainer Terminals (1981) 48 LGRA 409 at [414]; Marroun at [198]).
71In Brewarrana v Commissioner of Highways (No 2) 6 SASR 541; (1973) 32 LGRA 170 at [551], Wells J observed:
there is no hard and fast rule by the application of which a valuer may, whatever the circumstances, draw the line that clearly separates the sales that are comparable from those that are not.
72Further, Wells J went on to observe that:
The evidence in this case suggests strongly to my mind that, at the initial stages, a valuer will almost certainly look at all known sales in potentially relevant areas, if for no other reason than to discern patterns of prices and changes in price levels over important periods.
73In Trust Company, Pain J identified a failure to set out a clear stepwise process enabling scrutiny of the facts and assumptions relied upon by the valuer in reaching his conclusions, including identification of transactions of potentially low comparability, at [115] and leading to that part of the valuation report not being given any weight, at [119].
74The second step, being the analysis of potentially genuinely comparable sales, provides a common basis of measurement by seeking to convert all potentially comparable sales to a common basis of expression such as a unitary rate (rate per sq m, rate per ha, etc), improved or unimproved (through allowance for the absence or existence of improvements, etc) and so forth (Marroun at [201]; Tenstat at [45]; Adams at [38]; Chircop at [49]).
75While there can be no hard and fast rule determining that which may be addressed in the analysis step and that which may be addressed in the adjustment step, with individual assessment required on a case by case basis, it may be contemplated that the analysis step lends to reflection of such differences as may be capable of objective assessment or quantification such as, but not limited to, through costing.
76In the context of comparable sales of land for the purposes of subdivision, the analysis step may include reflection of such differences between comparable sales as improvements, settlement terms, requirement for fill, development levies and/or contributions and so forth.
77The third step, being the adjustment of potentially genuinely comparable sales, acknowledges the fact that no two properties are ever identical and seeks to convert those potentially comparable sales to a hypothetical expression of value as a unitary rate in the context of the subject property through the reflection of differences (such as size, location, use, date of transaction) between the respective potentially comparable sales and the subject property (Trust Company at [112]; Marroun at [202]; Tenstat at [47]; Adams at [40]; Chircop at [51]).
78Because properties are never identical, explicit and/or implicit adjustment for differences is obviously necessary but caution is required through making as few adjustments as possible, in a consistent manner, to ensure the reliability of the comparable sale when related to the subject property, with too much adjustment potentially rendering the comparable sale unsafe to use (Graham Trilby Pty Ltd v Valuer General [2009] NSWLEC 1087 at [36], Brewarrana).
79Therefore, as a matter of general valuation principle, fewer adjustments may be preferred to more adjustments and smaller adjustments may be preferred to larger adjustments in rendering comparable sales safe for use.
80In Brewarrana at [551], Wells J observed:
It is, in my view, all a matter of degree: some adjustment is always necessary; too much adjustment will render it unsafe to use a sale, subject to such a degree of adjustment, for the purpose of the reasoning process in the comparable sales method.
81Caution in adjustment is required as too much adjustment renders the use of comparables unsafe. Also, where large explicit and/or implicit adjustments are required, particular caution is required for large implicit adjustments (Trilby (2009) at [36]).
82Adjustment is a matter of degree, which must be carefully considered in each case (Marroun at [202]).
83While there can be no hard and fast rule determining that which may be addressed in the adjustment step and that which may be addressed in the analysis step, with individual assessment required on a case by case basis, it may be contemplated that the adjustment step lends to reflection of such differences as may not be capable of objective assessment or quantification such as, but not limited to, through costing.
84In the context of comparable sales of land for the purposes of subdivision, the adjustment step may include reflection of such differences between comparable sales as location, area, time and so forth.
85Making appropriate explicit or implicit adjustments for differences, such as in location, area and time, is accepted valuation practice, and enables valuers to produce, in their evidence, comparable values for the Court to assess. Such adjustment is a deductive process generally based on reasoning which draws on the expertise, skill and experience of the valuer (Trilby (2009) at [35]; Marroun at [203]; Holcim (Australia) Pty Ltd v Valuer General [2009] NSWLEC 225).
86Further, reflecting the significant roles of skill, experience and personal assessment in the adjustment process, the scope for differences in the quantum and direction of adjustment between valuers can be considerable (per Biscoe J in Holcim).
87The "detailed percentage adjustment approach" was preferred to "simply assert(ing) the land value" in Jessica Investments Pty Ltd v Valuer General [2008] NSWLEC 1375 at [6], a view echoed by Pepper J in Tomago Aluminium Company Pty Limited v Valuer General [2010] NSWLEC 4 at [45]:
To this it may be added that it is necessary to make explicit adjustments for differences so that the adjustment process is sufficiently logical. An implicit process comprising a single adjustment, rather than separately itemised and reasoned adjustments, risks rejection for want of transparency.
88A transparent process of explicit adjustment leading to an explicable assessment of value is preferred to an opaque process of implicit adjustment leading to an assertion of value (Marroun at [206]).
89In Trust Company, Pain J identified a failure to set out a clear stepwise process enabling scrutiny of the facts and assumptions relied upon by the valuer in reaching his conclusions (including an absence of explicit reasoning in adjustment of comparable sales) at [115] as leading to that part of the valuation report not being given any weight, at [119].
90Pain J identified:
A clearly articulated logical reasoning process which affords transparency and demonstrates an appropriate level of support for each of the key assumptions made
as lacking in a valuers report to which Her Honour did not then attribute any weight (Trust Company at [122,124]).
91Such adjustment process should work forwards from the comparable sales to derive an opinion of value, rather than working backwards to justify an opinion of value previously formed (per Jagot J in Trilby (2008) at [25]).
92The fourth step, being the application of those potentially genuinely comparable sales to the subject property, seeks to determine the value of the subject property through a consideration of the relevance (such as being limited, indirect or direct) of the unitary rate derived from those adjusted comparable sales relative to the subject (Trust Company at [114]; Marroun at [208]; Tenstat at [62]; Adams at [56]; Chircop at [54]).
93While all comparable sales evidence may be considered relevant and so cannot be disregarded, the level of relevance of different comparable sales to the subject property may vary leading to the valuer attributing differing weight to different comparable sales (Marroun at [208]).
94In Trust Company, Pain J identified a failure to set out a clear stepwise process enabling scrutiny of the facts and assumptions relied upon by the valuer in reaching his conclusions, at [115] as leading to that part of the valuation report not being given any weight at [119].