Urban built environment

Applied studies on the spatial form and the manner of physical-spatial development of the city can be useful in addressing urban issues and meeting the present and future needs of citizens. Therefore, the aim of this research is to analyze the impact of the urban built environment on the quality and health of citizens' lives (case study: District 4 of Sari City) in the year 2025. The research method is descriptive-survey, and the statistical population includes residents of District 4 of Sari City, which is considered the old texture of the city. To test the hypotheses, Pearson correlation and path analysis were used for modeling with SPSS software, version 26. The findings indicate that there is a significant and positive relationship between the components of the urban built environment and the quality and health of the lives of Sari citizens. Three components of the urban built environment—(security and comfort of the living environment, access to public spaces, and urban identity)—explain 55% of the variance in the quality and health of citizens’ lives in District 4 of Sari City. District 4 of Sari, as the old texture of the city, includes elderly residents and the city center population. The components of the urban built environment directly and indirectly showed that more than half (55%) of the quality and health of citizens’ lives can be improved through thoughtful design measures and prudent management, thereby achieving citizens’ life satisfaction.