Compact city model is one of the urban development approaches in recent decades, it is applied in order to use urban land optimally and to solve problems associated to appearance, public transportation and space in many advanced and under developed countries. The compact city approach has been revealed as increasing aggregation and of high rise buildings construction in Iran country and Mashhad as well. But the real matter is how much this increasing aggregation and constructing of high rise buildings adapt with social, economical, population principles and indicators and sustainable urban development. This research attempts to response the above issue. The methodology in this research is analytic descriptive. In this study, the skeletal, economical, social indicators and sustainable development are examined by statistical and GIS software. The used data in this study are provided through location data of the studied area and completing questionnaire (n=384) and then it was analysed by Lisrel software. The obtained results suggest increasing aggregation and constructing tall buildings in Mashhad district 1 city in different skeletal, economical and social aspects, aren`t adapted with sustainable urban development principles and increasing aggregation meanwhile decreasing environmental quality which have caused reduction of the citizens` different required services including educational, recreational and green space on the area and it has made problems for the citizens in the considered area. Also the purpose of increasing aggregation and high-rise building in the considered district was profitability.

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