The problems of negative ecological heritage are not an exclusive feature of the 20th century, but because of the lack of available space, accumulated negative effects of development and the increasing exploitation of land resources in all domains of economic, social and urban life, and because of the utilization of natural resources from the industrial to the technological revolution, we have reached the phase which imposes, necessarily and even urgently, the transformation of the previous unsustainable individual, institutional and system attitudes to developed environment. Thanks to the fundamental significance of spatial and town planning in modern urban-architectural activities, the above refers especially to previously insufficiently functional paradigms, i.e. nonharmonized or unbalanced connections and relationships between physical architectonic-landscape urban structures and local community demands for sustainable eco-urban survival and development at local and global levels. This leads us definitely to abandoning or transforming the previous concept of planning and urbanization, which has largely contributed to the present-day threatening greenhouse effects. Based on the above, it is necessary to articulate the new integrative concept, with a high degree of ecourban awareness, knowledge and skill of all profiles that participate in planning and construction of the sustainable ecourban development of the developed environment.