As a result of the great changes witnessed in Yemen in general and the city of Ibb especially since the establishment of Yemeni unity in from 1990 to 2018, from the economic, political, social, cultural and intellectual aspects, due to the migration from the rural to the urban area and the resulting increase in the need for housing construction, and in the absence of laws, legislation and awareness community, in Ibb city emerged New design patterns in residential buildings for middle-income people due to those changes.
This paper studies the changes in design patterns of residential buildings in Ibb and monitored them to benefit from them in the modern housing sector by the cultural and economic structure of society and meet the new and contemporary functional needs of the population. The paper adopts the descriptive documentary approach to track residential patterns in traditional and modern housing before and after the revolution of 26 September 1962 until the end of the twentieth century, and then conducting a field study of the contemporary residential buildings for middle - income people in Ibb and extracting the changes that occurred in the design patterns of the housing units of this category. The research found that there are four design patterns for residential buildings in the city of Ibb, they are results of the economic level of the population and cultural, functional and social disparities, which contributes to the assimilation of housing-related institutions and architects of the changes in design patterns of buildings Which were produced by economic, cultural, intellectual and political changes, which in turn contribute to the improvement of the residential environment of this category, by responding effectively to the trends of the population and their potential in order to meet their housing needs, The paper concludes with a set of findings and recommendations that contribute to the production of housing that meets the needs of middle-income population category, linked to the past related to the present and future and appropriate to the reality of the population and their potential and trends.