Investigating proper arenas for the infill developments in Ilam City

.Nowadays, owing to the importance of natural resources maintenance and reducing the environmental influences of irregular urban developments, the infill development has been introduced as one of the urban planning approaches. Therefore, urban developments in existing areas and maximum using of developed lands facilities located in the cities are the first priorities rather than horizontal developments of the cities. The aim of this paper is to investigate proper arenas for the infill developments in Ilam City. It’s an analytical-descriptive research using field study and data from the libraries. The population includes urban management experts that 20 of them were chosen as the sample by Convenience Sampling Method. To analyze the data, GIS maps related to intended indexes were used and the analytic hierarchy process (AHP) for ranking and prioritizing the arenas was done. The findings reveal that the spatial-body criterion with the total weight of .408 is the most important factor in determining the infill arenas. The functional-managerial factor with the total weight of .311 and social-economic criterion with the total weight of .281 respectively are the next important factors. Determining proper arenas for the infill developments in Ilam City was another objective of this study. According to the results, among 162 hectares of land pieces in Ilam City which are poor, ruined and without any uses, just 13 hectares were highly suitable and 38 hectares were suitable for infill developments and the rest lack the criteria for the mentioned purpose.