Urban development, or architectural design in fragile (sensitive) territories is always complicated, especially when one considers national, regional, reserve parks, or other territories that have a lot of sociocultural meaning to society, and local communities. Existing bureaucratic procedures complicate community involvement into planning process, and creativity manifestation in decision making is vague. The article analyses three design through research project cases developed by authors, which share common goal-to improve the quality of the environment using innovative and contemporary solutions, deal with landscape sustainability and local identity issues by involving community into design process. Presented samples reveal three different design through research and participatory design models. In each case site planning projects are initiated by different groups, therefore motives for the project implementation differ. That determines the sample of public inclusion, scope of fulfilled research, design solutions and capabilities for sustainability of the project. Comparative analysis of these cases summarize strengths and weaknesses of each model and form recommendations for similar territorial development in the future.