security is one of the most up-to-date topics in urban planning and architecture particularly on a neighborhood scale because its environmental factors are not deniable. Hence, this study aims to identify all environmental design factors affecting security promotion in the neighborhood’s center through a comprehensive conceptual model. This study also evaluates the effect of these factors on the center of Sang Siah Neighborhood. In the literature review step, all environmental design dimensions and factors of security in the neighborhood have been identified and designed within a conceptual model using a modified Delphi technique. This model was then evaluated in the center of Sang Siah neighborhood (the symbol of the social-cultural identity of the historic fabric of Shiraz). This step has been done using the case study and survey method using questionnaires distributed among 98 persons in the neighborhood. The sampling method is “random cluster.” In the activity-service dimension, research findings indicate that people and experts look for the occurrence of cultural activities in behavior settings with two different expressions. The significant difference in this subject is the participation index, which interests people. In the social dimension, people think that trust and solidarity between them in using natural surveillance indicators and a sense of belonging that are of interest to them and experts can improve security in the neighborhood. In the meaning dimension, a shared view exists and both groups of people and experts introduce the vitality index as the most effective factor in improving security. In terms of physical dimensions, experts use aesthetic factors to achieve their safety goals while people have a functional approach to it.