Measuring of Housing units quality With the VIKOR (Case Study: The City of Mashhad)

Abstract Since the beginning of the problem of the city, housing and quality of them, can be seen as the most important issue of interest to researchers in this field. Short viewin studies show, one of the main elements of them is enumerating appropriate or inappropriate housing indicators. Of course, these indicators with regard to the definition of housing in different periods have been different. Quality of residential units, including the information necessary in many logistics activities- the city's development. Due this index, based on 1390census data and official city of Mashhad were studied.In addition, in this study, assessment risk of effective factors in the quality of residential units. To achieve this goal, 11physical parameters, using by Excel and ARC GIS software, statistical processing and maping. Type of research is applied and research method is analytical. And the documentary is a method of data collection. This kind of research is a way, decisioning to lay part of the housing units in a special category. Therefore VIKOR (method of multi criteria decision-making) is used. Considered indicators show that 53 percent of the housing units are in good condition and 12percent in bad situation, which has claimed responsibel of city management in urban restoration. A considerable portion of inadequate housing units located in the center and historic city, and north-east and north-west of the city.Variables survey shows, age, number of room that belong to family and type of material are effective factors in the quality of housing units, in this study.