The relationship between the content of an appropriate duty and the propriety of its recognition
93 The trial judge held that the content of the relevant duty owed by the defendants was to avoid acts or omissions which they could reasonably foresee would be likely to cause injury to the plaintiff, and included "a duty to prevent harm to the [plaintiff] from the criminal conduct of a third party". A duty to prevent harm is a duty embodying an extremely high standard. There would be no way of fulfilling that duty short of engaging armed guards. However, the trial judge's formulation of the duty, assuming one existed, must be wrong. The duty of a landlord of residential premises is only to take such steps as are reasonable in the circumstances, it is not to make the premises as safe for residential use as reasonable care and skill on the part of anyone can make them: Jones v Bartlett (2000) 205 CLR 166 at [90] and [92] per Gaudron J. Similarly, if there is a duty in relation to criminals, it is only a duty to take those steps to prevent harm from criminals which are reasonable in the circumstances, not an absolute duty to prevent harm. The circumstances relevant to reasonableness are those which control the response of a reasonable man to the risk: he would consider the magnitude of the risk; the degree of probability of its occurrence; the expense, difficulty and inconvenience of taking alleviating action; and any other responsibilities which the defendant may have. The outcome of that process of consideration might be that no response was called for.
94 But when assessing the response of the reasonable man, what goal is the court to take as the object of the response? What is the goal to be aimed at in defining a standard of care in particular circumstances? Sometimes it is described as eliminating the risk of harm: Overseas Tankship (UK) Ltd v The Miller Steamship Co Pty (The "Wagon Mound") (No 2) [1967] 1 AC 617 at 642. Sometimes it is described as "alleviating" the risk: Wyong Shire Council v Shirt (1980) 146 CLR 40 at 47. The latter approach is sounder, since a contention that reasonable precautions have been taken is not invalidated by showing that if some other course of action had been followed the harm would not have occurred: Bressington v Commissioner for Railways (New South Wales) (1947) 75 CLR 339 at 348. Hence Fleming, The Law of Torts (9th ed, 1998) p 130, formulated the goal as deciding upon precautions or alternatives "that might eliminate or minimise the danger". But the goal of minimisation cannot be taken literally. As Callinan J said in the Modbury case at [136] n 162, "To require minimisation would literally be to require reduction in risk to the point almost of elimination". That will often be an impractical goal. Hence there is some attraction in Hayne J's view in the Modbury case at [109] that, at least in the present context, the inquiry into the content of the duty must be influenced by a search for reasonable steps to "hinder or prevent" injurious criminal conduct.
95 The verb to "hinder" has in various other contexts been construed to mean "to affect to an appropriate extent the ease" of conduct: Tennants (Lancashire) Ltd v C S Wilson and Co Ltd [1917] AC 495 at 514 per Lord Dunedin; Devonish v Jewel Food Stores Pty Ltd (1991) 172 CLR 32 at 45-46 per Mason J (the judgment was a dissenting one, but apparently not in this respect); The Australian Builders' Labourers' Federated Union of Workers - Western Australia Branch v J-Corp Pty Ltd (1993) ATPR 41-245 at 41,307-41,308 per Lockhart and Gummow JJ. "Hinder" can also mean "interposing obstacles which it would be really difficult to overcome"; or making an outcome "more or less difficult, but not impossible"; or interference with an outcome short of preventing it: Tennants (Lancashire) Ltd v C S Wilson and Co Ltd at 510, 518 and 522 per Lords Loreburn, Atkinson and Shaw of Dunfermline respectively. The goal of the reasonable man, then, is to consider how to eliminate the risk of harm or how to hinder the occurrence of the risk in the sense of significantly or substantially reducing it.
96 In assessing whether a duty of care should be recognised, which is the enterprise which the plaintiff requests the court to carry out, it must be relevant to inquire whether the content of the duty to be recognised would, if complied with, hinder harm in the sense of reducing, significantly or substantially, the chance of harm, even if compliance would not wholly eliminate the chance of harm. A precaution which significantly or substantially reduced the chance of harm would be a precaution which, depending on all other relevant factors, would be valuable. A precaution which only minimally reduced the risk of harm would not be worthwhile. At least in areas like the present, where it is controversial whether or not to take the step of creating a duty of care, if compliance will not reduce substantially the chance of the harm, what is the point of recognising the duty?
97 It is futile to recognise a duty of care where compliance would not at least reduce the risk of harm significantly or substantially. This requires consideration of the question whether having a door lockable in the way the door was locked before 6 May 1993 was enough, or whether some superior means of obtaining security should have been employed.
98 The evidence establishes that before 6 May 1993 the door was not always locked, and indeed that it was often not locked. It is highly questionable whether it would have significantly or substantially reduced the risk of the plaintiff suffering the injury which she in fact suffered, particularly since on one week in every month Mr Islam found the door open late at night, the time when the plaintiff was attacked.
99 Even if the door had always been locked, it is questionable whether it would have significantly or substantially reduced the risk of injury. One may leave out of account relatively far-fetched possibilities raised by the defendants, namely that a determined criminal could have obtained entry through the plaintiff's balcony or someone else's balcony to a unit and thence to the hallway, or obtained entry through the front door with a lawful entrant equipped with a key: these are not plausible events late at night, while the occupants of units were in all probability asleep, and at a time when it would not be easy to provide a lawful entrant with some apparently legitimate excuse for entering the building. But a determined criminal - and a tall strong man wearing a face mask, possessing cloth impregnated with a substance which appeared to be poisonous or to smell like methylated spirits or to be ammonia, and armed with a knife, who had somehow obtained entry onto the stairwell and lay in wait for the plaintiff was a determined criminal - could have waited outside the body corporate's land on which the building stood. While the plaintiff returned home on the night in question by car, so that she could not have been attacked off the premises, an attack on a person in the position of the plaintiff returning home late on foot, or after alighting from a taxi, could not possibly have created liability in the defendants if it took place off the premises, but the areas surrounding the premises may have offered suitable places to wait. Another possibility is that the assailant could have waited inside the land on which the building stood but outside the door - he could have waited inside the recessed part of the building in front of the door, and on hearing the plaintiff's approaching footsteps have coerced her inside the building through the door. Indeed, he could have waited in the garage and attacked persons in the position of the plaintiff returning by car from there or from parking areas to the rear of the building, or attacked persons in the position of the plaintiff approaching the front door on foot from there. If the movements of any potential victim were too fast and enabled the closing of the door before the criminal entered, he could have broken the glass in the door and followed the victim.
100 Of course, each of these possibilities carries potential dangers for the criminal. An attack carried out outside the premises, and an attack on the premises but outside the door, might be seen by a passer-by, but these would have been very few in number at 2.45am. An attack inside the garage might have been visible, but persons moving about the premises would have been even fewer in number than passers-by outside them. To follow the plaintiff through the door might cause noise, but no more noise than the criminal was prepared to risk in any event when he attacked the plaintiff by coming down the stairs. To break the glass and follow the plaintiff would cause noise, but the criminal's modus operandi obviously depended on speed - the speedy administration of some noxious substance or the speedy procurement of cooperation by the use of the knife. Even after the assailant departed, the plaintiff's screams and attempts to get assistance by knocking on unit doors did not, unsurprisingly, elicit immediate responses from the other unit holders. The difficulties facing her in that respect had no doubt been taken into account by the criminal. In these circumstances, if the duty to be recognised is one which would eliminate the risk of the type of harm which the plaintiff suffered, or substantially or significantly reduce it, what steps could satisfy it? The substitution of a door without glass and with a foolproof locking system would not significantly reduce the risk. The only remedy which would do so would be the employment of a night watchman, perhaps armed. Though the matter was not investigated at the trial, it seems safe to conclude that to engage a night watchman seven nights a week would cost significant sums of money - at least $20,000 per annum. The sum might be much greater. But if the duty is to take reasonable steps significantly to reduce the risk of criminal conduct, the duty would extend to taking appropriate measures in the daytime as well. Though no doubt in daylight the risk of armed robbery outside the building, in the garage, or on the stairs, might be reduced, it would not necessarily be reduced significantly. There would also arise new risks: many more people would be likely to pass through the building between the early morning and the early evening than would be likely to at 2.45am; the temptation to criminals to carry out burglaries by posing as lawful entrants would increase; the chances of break ins to units while their occupiers were out at work or engaged in other daytime activities away from the building would rise. A determined attempt to deal with all relevant risks - risks of injury to persons, risks flowing from malicious damage to property, risks flowing from offences of dishonesty in relation to property, would call for much more than simply restoring the locked door. It might call for twenty-four hour guards, at an expense likely to be well beyond the capacity of a body corporate and the fifteen unit owners, many of them no doubt not enjoying high incomes, to pay.
101 In the United States the courts have declined in general to recognise a duty to provide "armed, visible security guards to deter criminal acts of third parties". That is a duty to provide police protection, which is the duty of the State: to compel defendants to supply police protection is to compel a safer regime on the occupier's premises than the beneficiaries of the duty would experience in the community at large: Nivens v Hoagy's Corner 943 P 2d 286 (1997). In Ann M v Pacific Plaza Shopping Centre 863 2d 207 (1993) at [13]-[14] it was said that the duty to have security guards only arose if there was a "high degree of foreseeability", because of their cost, because it was difficult to assess how many patrols were sufficient to deter, and because "the social costs of imposing a duty on landowners to have private police forces are … not insignificant". This reasoning has little application in Australia. In the United States the threshold which must be passed before a duty is created is low, and the courts are understandably reluctant to hold that in the wide range of cases where there is a duty its content generally calls for the provision of guards. In Australia it is very difficult to pass the threshold which lies before a finding of duty; but once it is passed there is no point in having done so unless the content of the duty, if complied with, would eliminate or significantly or substantially reduce the risk of harm.
102 Further, the consequences of recognising a duty to take reasonable steps to eliminate or substantially or significantly reduce the risk of harm being caused by criminals might call for even more expense. It might call for the inspection of the totality of the premises by an expert in home security. It might call for the fortification of all external windows and all balcony doors: the sole past experience of criminal conduct had been of criminal entries through balcony doors. Yet the effectuation of such fortifications would not only cost more, but would raise aesthetic problems. It would also collide with the desires of any particular unit owner to preserve his or her property unchanged. See generally Jones v Bartlett (2000) 205 CLR 166 at [15], [19] and [23]-[25].
103 In Sullivan v Moody (2001) 183 ALR 404 at [42] Gleeson CJ, Gaudron, McHugh, Hayne and Callinan JJ said that reasonable foreseeability of harm was not the sole condition for the recognition of a duty of care.
"If it were otherwise, at least two consequences would follow. First, the law would subject citizens to an intolerable burden of potential liability, and constrain their freedom of action in a gross manner. Secondly, the tort of negligence would subvert many other principles of law, and statutory provisions, which strike a balance of rights and obligations, duties and freedoms."
104 The recognition here of a duty to eliminate or substantially reduce the risk of harm flowing from criminal conduct outside existing criteria for the recognition of duties of that kind might be said to subject the defendants, and behind them the unit holders, to "an intolerable burden of potential liability" if they did not take appropriate measures, and "constrain their freedom of action in a gross manner" by reason of the large expenditures called for if they did take appropriate measures. It might also be said to subvert statutory provisions "which strike a balance of rights and obligations, duties and freedoms". The legislation which permits citizens to own strata units balances the rights and freedoms of each unit owner to deal with his or her unit as desired with the obligations and duties to conform to decisions of relevant organs of the body corporate. If the imposition of a tortious duty would compel the overriding of the balance which would otherwise exist, or expose the body corporate to liabilities which it could not avert because it could not compel unit holders to cooperate, these consequences point against the conclusion that the law recognises the existence of that duty.
105 Under the Strata Titles Act 1973, in force in 1993, a "lot" was a cubic space designated as such on a strata plan. Which parts of the building were common property, over which the body corporate had a duty and a power to effectuate changes to improve security pursuant to s 68(1)(b) of the Act, and which were "lots", over which only the relevant unit holder had that power? That is not a question on which the evidence throws light, because it was not a question seen as relevant at the trial. The strata plan designating the units is not in evidence. After the assault on the plaintiff, a question arose at an annual general meeting of unit holders as to whether the plaintiff had received permission from an earlier manager to install security bars blocking outside access to her unit. This implies a view by those present either that the outside of the plaintiff's unit was not part of her lot or that even if it was the body corporate could control what was done on it. But there is no other material casting light on the correctness of that view, apart from the not necessarily well instructed understanding of Mr Platt that the volume inside the coat of paint covering the walls of a unit was the unit holder's property, while what was outside that coat of paint was common property.
106 However, the lack of material evidence does not matter for present purposes. If security measures required attention to the windows and doors and balconies of individual units, and those windows and doors and balconies were part of each lot, the body corporate could not compel work to be done to them. If they were part of the common property, it could, but only if a majority of unit holders voted that way in a meeting of the body corporate or some other relevant organ of the body corporate reached a decision to that effect, which decision would require, from a practical point of view, some unit holder support. The courts should be reluctant to impose legal duties which would either collide with unit holder autonomy, or create a topic of dissension amongst unit holders.