CPTED
Definition
Crime Prevention Through Environmental Design. An applied design discipline using natural surveillance (sightlines, lighting), territorial reinforcement (ownership cues), natural access control (barriers, entry points), and maintenance (upkeep signals) to reduce crime opportunity through building and urban design.
- Full name
- Crime Prevention Through Environmental Design
- Core strategies
- Natural surveillance, territorial reinforcement, natural access control, maintenance
- Application
- Building and urban design
- Related theory
- Situational crime prevention
Common questions
How does natural surveillance differ from installing security cameras?+
Natural surveillance relies on design choices, such as clear sightlines, windows facing public spaces, and adequate lighting, that let ordinary occupants and passersby see and be seen, discouraging crime through the presence of casual observers rather than relying on recorded footage reviewed after the fact.
Why does CPTED include maintenance as a crime-prevention strategy rather than just a cosmetic concern?+
Poorly maintained spaces, such as broken lighting, litter, or graffiti left unaddressed, signal that an area is not monitored or cared for, which research associated with the broken windows idea links to increased opportunistic crime, so upkeep itself functions as a territorial and surveillance cue, not merely aesthetics.
Related terms
- 25 Techniques
- Ronald Clarke's classification of situational crime prevention methods into 25 specific techniques organised under five mechanisms: increasing effort, increasing risk, reducing rewards,...
- Access Control
- Design that channels how people enter and move through a space, so that legitimate routes are obvious and illegitimate ones are difficult...
- Crime Script Analysis
- A method developed by Derek Cornish that maps the sequential steps an offender must complete to commit a particular crime type, from...
- Defensible Space
- Oscar Newman's 1972 concept describing a residential layout that lets residents naturally supervise and feel ownership over the space around their homes.
- Diffusion of Benefits
- The spread of crime-reduction effects beyond the area or targets directly covered by an intervention. Offenders uncertain about the extent of a...
- Displacement
- The relocation of crime following a prevention intervention. Can take five forms: territorial (to another place), temporal (to another time), target (to...
- Natural Surveillance
- Design that keeps sightlines open so that ordinary occupants can see, and be seen by, people moving through a space, without relying...
- Opportunity Structure
- The set of environmental, social, and product conditions that make specific crimes more or less easy to commit. Situational prevention works by...
- Second-Generation CPTED
- An extension of first-generation CPTED that adds social cohesion, community culture, connectivity and threshold capacity alongside the original physical strategies.
- Territorial Reinforcement
- Design cues, such as low fences, signage or landscaping, that mark a space as privately claimed and signal that a stranger's presence...
Explained in these topics
- Crime Prevention Through Environmental Design (CPTED)Crime Prevention Through Environmental Design, the practice of shaping the built environment to reduce the opportunity and inclination for crime.
- Situational Crime Prevention