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A number of studies have found that the majority of crime is geographically concentrated at very small locations. Some studies suggest that as much as 50% of all crime in a city occurs at just 3-5% of addresses and street blocks . Additionally, the research finds that these concentrations are stable over time and that they occur in different areas throughout the city. Numerous studies have illustrated the utility of focusing police patrol and other interventions on these locations. Problem-solving approaches can be particularly effective when applied to hot spots.

Following from this strong body of research, Case of Places is a strategy that focuses detective activities on high-crime places as the investigative unit of analysis, as opposed to persons. There are three principles behind Case of Places:

  1. Law enforcement agencies should devote as much resources to investigating problem places as they do investigating crime suspects.
  2. Using existing cultural and organizational structures and status surrounding detective work may be a good approach to facilitating a better orientation to place-based policing, as opposed to an ad hoc, special projects approach.
  3. Place-based policing is a crime prevention concept strongly supported by research. Investigating cases can support place-based policing by facilitating efforts to track the history of crime problems, actors, and police actions at hot spots.

Case folder contents mirror similar investigative processes for people, converting traditional elements of investigative case folders to place-based equivalents. For example, a “suspect” in a traditional detective’s case folder is a person. For Case of Places, the “suspect” might be a group of people, a building, a business, or something in the physical environment. The Case of Place Form, Guide, and Checklist for building case folders for places are posted to the right, along with other place-based resources.