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HomeMy WebLinkAboutAppendix L Crime Prevention APPENDIX L CRIME PREVENTION THROUGH ENVIRONMENTAL DESIGN METHODS AND EXAMPLES APPENDIX L CRIME PREVENTION THROUGH ENVIRONMENTAL DESIGN Additional mitigation for impacts to police services can be built into a subdivision and the homes through utilizing Crime Prevention Through Environmental Design (CPTED). CPTED is an approach to subdivision design and house design that reduces crime through the use of principles such as Natural Access Control, Natural Surveillance, Territorial Reinforcement and Target Hardening. Each of the principles increases the ability of homeowners and neighbors to observe conditions in the neighborhood but also creates a sense of territory that helps deter potential offenders. The following are the CPTED guidelines for Single Family Homes and Subdivisions. SINGLE FAMILY HOMES The guiding principle here is “know thy neighbor.” Street and homes should be designed to encourage interaction between neighbors. Good examples of these design elements are the front porch and property lines that are defined simply by low shrubbery instead of high fences. 1.Natural Access Control · walkways and landscaping direct visitors to the proper entrance and away from private areas. 2.Natural Surveillance · all doorways that open to the outside should be well lit. · the front door should be at least partially visible from the street · windows on all sides of the house provide full visibility of property · sidewalks and all areas of the yard should be well lit · the driveway should be visible from either the front or back door and at least one window · the front door should be clearly visible from the driveway · properly maintained landscaping provides maximum viewing to and, from the house 3.Territorial Reinforcement · front porches or stoops create a transitional area between the street, and the home · property lines and private areas should be defined with plantings, pavement treatments or fences · the street address should be clearly visible from the street with numbers a minimum of five inches high that are made of non-reflective material 4.Target Hardening · interior doors that connect a garage to a building should have a single cylinder dead bolt lock · Door locks should be located a minimum of 40 inches from adjacent windows · exterior doors should be hinged on the inside and should have a single cylinder dead bolt lock with a minimum one-inch throw · new houses should not have jalousie, casement or awning style windows · all windows should have locks · sliding glass doors should have one permanent door on the outside; the inside moving door should have a looking device and a pin SUBDIVISIONS 1.Natural Access Control ? access should be limited (without completely disconnecting the subdivision from adjacent subdivisions) ? streets should be designed to discourage cut-through traffic ? paving treatments, plantings and architectural design features such as a columned gateway guide visitors away from private areas ? walkways should be located in such a way as to direct pedestrian traffic and should be kept unobscured 2.Natural Surveillance ? landscaping should not create blind spots or hiding spots ? open green spaces and recreational areas should be located so that they can be observed from nearby homes ? pedestrian scale street lighting should be used in high pedestrian traffic areas 3.Territorial Reinforcement · lots, streets and houses should be designed to encourage interaction between neighbors · entrances should be accentuated with different paving materials, changes in street elevation, architectural and landscape design · residences should be clearly identified by street address numbers that are a minimum of five inches high and well lit night · property lines should be defined with post and pillar fencing, gates and plantings to direct pedestrian traffic · all parking spaces should be assigned I/27225/docs-rpts/EIS_jdm062104