This study is part of the theme of Integration of recently built-up areas into teh pattern of the city. The spatial layout and the structure of the city are elements of spatial configuration with time span of centuries. If we speak about sustainable design, we have to first speak about sustainable built environments, where people find themeselves satisfy, safe and can find them as homes. In this article, specific segment - housing complexes, are studied in terms of spatial integration and accesibility. Space Syntax method is used to analyze 15 chosen housing complexes in Prague.