Abstarct: Abstract The introduction of social housing as a necessity in urban planning systems is the problem of the current research, which is the quality of housing in residential complexes and the premise of its study is the role of privacy in improving the quality of housing. The aim of the research is to achieve a human and social structure in residential complexes by improving the general quality of residence. The explanation of the components, the criteria of the quality of residence, overall privacy and how it is realized in the researched examples - four residential complexes in Mashhad - are the main research questions. Through random sampling in the statistical sample (345 people) and using a closed questionnaire, field research was conducted and using SPSS analysis software, the results of the studies were presented using descxriptive tests, mean, correlation, regression and path analysis. The findings show that there is a significant relationship and correlation between the two variables of privacy and quality of residence, and only two variables of residence status and gender have a direct and positive effect on the variable of quality of residence. A single or concentrated type, such as the Venus complex, has the highest quality of residence and privacy in general and among the components of the quality of residence (perceptual-emotional, physical-functional, social-activity) and privacy components (individual-social, moral-religious and behavioral-functional). The habitat quality of the scattered species (Farhangian complex) and then the peripheral species (Pars complex) are respectively in favorable conditions. And in relation to the privacy variable, the environmental species (Pars) and then the scattered species (Farhangian) are in favorable conditions. And the strip species such as the (Zanbagh) complex has the lowest quality of residence and privacy in general This shows that privacy and quality of residence in residential complexes have a correlation and positive significance. Finally, the results of the research, according to each component of privacy and quality of residence, are presented as a solution for the improvement of residential complexes.