Threats are one of the most fundamental problems of our modern societies that daily will affect citizens in urban spaces. This becomes more problematic when the people in their everyday living spaces encounter with behaviors that cause lack of security and should have been feel comfort and their families used these spaces freely. This causes many problems for citizens. In today cities because of the increasing growth in construction of residential complexes and high population density in a little area comfort ​​ with more problems and security is more important. So providing security in outdoor and semi-outdoor spaces of residential complexes is not exact scope and is very important. In this study using the analytical-descriptive method and library studies, the factors influencing the security of residential complexes in the form of a conceptual model investigated.