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Introduction: Sustainable neighborhood development is a perspective that believes that solving the current problems of cities depends on returning to the concept of neighborhood. The neighborhood is the most fundamental unit of urban development, and the minor scale of attention to various aspects of sustainability as an urban unit with greater control over the city and as a good level for testing new ideas and ways to achieve sustainable urban development has received increasing attention. However, no extensive studies have been conducted on this concept on a micro-scale, and its implementation and quantifying the relationships between the various components of sustainability is also an important issue that has been neglected. Methodology: The present study aims to assess the impact of physical -spatial, economic, sociocultural, transportation and communications, environmental, governance -management on the sustainability of neighborhoods in Javadiyeh Neighbourhood District 16 of Tehran sample was formed. Accordingly, after reviewing the literature related to the issue of sustainability, a conceptual model of the research was formed. Then a questionnaire was surveyed from the residents of the study neighborhood. It should be noted that according to the Cochrane formula, the statistical population includes 381 people. In this study, data analysis was performed using the structural equation modeling method and Smartpls software. Results:The results showed that the three paths "governance-management →economic → sociocultural", "governance-management → economic → sustainability of neighborhoods" and "economic → socio-cultural → environment" With the coefficients of 4/898, 3/208, and 1/988, respectively, were the essential paths influencing citizens' perception of sustainability of neighborhoods and in general, the governance-management component was recognized as the most effective component in determining the sustainability of neighborhoods. Conclusion:To improve sustainability in different areas, we can emphasize the need to use a strategic plan for sustainable urban development in which special attention is paid to the impact of different components of sustainability on each other.

Since the 1980s, a wide range of physical and non-physical interventions, including megaprojects and flagships to small-scale projects and temporary usage, are prescribed as catalysts for urban regeneration. The strategy of utilizing urban catalysts as a tool for urban renewal has been encouraging by many city authorities through specific subsidization and privileges. However, there is no correct and precise definition of the tools and the qualities they should provide as their impacts. Besides, some criticize the catalytic projects due to their unsustainable, unjust, and destructive consequences.  This paper intends to provide a more comprehensive definition of urban catalysts by reviewing the existing literature. The research has been done through a deductive and inductive approach to reach the principal dimensions and criteria for catalytic projects. It uses a series of potential projects and interventions in the City of Tehran (16 projects and practices) as case studies to check the dimensions and criteria and the quality of each project as catalysts. The quality of the selected case studies was ranked through expert judgment and checklist method. The findings show the cases' rank on how their catalytic impacts comply with sustainable development goals. According to the results, seven criteria (environmental sustainability, context-based development, pattern making, branding, social quality of life, economic prosperity, and market adaptability) are essential to ensure the sustainability of catalytic impacts of catalyst projects.