An infill development of the process of urban developing and reusing empty or unused parts or sections of existing urban areas that have already been developed. the infill development, which may be considered as the simplest interpretation of endogenous development, tends to extend development on these lands, with emphasizing the abandoned and empty intra-city lands. Current research with an analytical approach in the infill development with the emphasis on the 8th district of Tabriz Municipality and utilizing statistical-spatial methods has been get involved to this issue. This kind of research is known as descriptive-analytical. the methodology of this research is based on quantitative-spatial approaches. the research method used in this study is a combination of documentary-library methods. in the analytical section, considering the indicators and requirements of infill development in the form of 16 target indicators, the case study and feasibility of infill development in Tabriz 8th district have been discussed. in the current study, to investigate and analyze the strategic role of infill development in regeneration of the urban texture worn of the historical-cultural axis of the metropolitan city of Tabriz, utilizing the geographical information system (GIS) software and Overlapping Functional Analysis, type of weighted overlay and FAHP is done. The results of present study are presented in the form of three priority development plans as well as unauthorized developmental areas.

Deterioration of urban textures is an issue that most cities in Iran are faced with and the organization of such textures is of great importance. One of the safest and most practical solutions for urban planners is to assess the feasibility of regenerating such textures to determine the levels that can be regenerated and are relatively good and tolerable for urban society. Therefore, the present study aims to investigate the feasibility of regenerating worn-out textures of Ilam City based on urban smart growth approach using a descriptive-analytical methodology. The statistical population of the study includes residents of central worn-out texture of Ilam city (population: 12676 people), 384 of whom are selected as the sample of the study using cluster sampling method. The data collection tool is a researcher-made questionnaire that has been confirmed by face validity and Cronbach’s Alpha coefficient, turning out to be 0.701. Data analysis is done using single-sample t-test, fuzzy multi-criteria analytical hierarchy process (fuzzy AHP), and its integration with GIS layers. The findings show that the condition of worn-out textures of Ilam city is unsuitable in terms of urban smart growth approach. Evaluation of the digital strata shows that some indicators (including size of the sections, access to services, main and secondary access points) are in a good condition and others (including unused land, population density, gender ratios, active population, employment rate, and literacy rate) are in a poor condition. Finally, the results show that 2.3 hectares of the worn-out texture of Ilam City, including 22-Bahman Square, Ashrafi Esfahani St. where it crosses Resalat Intersection, the northern edge of Moghavemat Intersection, the northern edge of Imam Square, and the area around Koudak Park, have the highest priority for regeneration and revitalization.