A socio-psychological model of fear of crime is described, in which environmental influences are represented by the factor 'criminalisable space. The underlying concept was in part developed through a review of the 'defensible space' literature. Three issues from the review are highlighted here: the charge of determinism; the relative weights of physical and social factors; and the absence of a sociophysical, interactionist approach. More recent concepts of relevance to the environmental study of crime and fear of crime are refered to, e.g. 'signs of incivility'. Attention is drawn to their value-assumptions. 'Criminali sable space' and its empirical use is further elucidated.