The Master Thesis aims at identifying the importance of relationships among involved parties and residents for cohousing projects in Austria. Cohousing is a special form of collaborative living with a high community focus, common meals and common rooms. For the purpose of this paper, qualitative semi-structured interviews were used as the main method. This research encompasses the cohousing projects of Lebensraum and Pomali in Austria. Interviewees in both case studies were actors on the regime level, the intermediary level and the local project level. The major findings of this thesis are that initiators are visionaries and have characteristics of social entrepreneurs, whereas other residents think very pragmatically and want to enjoy the benefits. By taking a look at surroundings, there are often prejudices and a lack of knowledge about cohousing projects in the beginning. Some members of the projects are in a collaborative housing network, where knowledge exchange happens and potential groups can get help by visiting established projects. Moreover, local politics and building contractor/big housing cooperatives are the most powerful actors in the emergence of cohousing projects. All social capital that emerges through the relationships with different actors can be supportive or retarding to cohousing projects. Nevertheless, as Austria is not the best place to set up cohousing projects, because of unsupportive legal conditions and a general lack of knowledge, the emergence of a project is very lengthy. These findings underline that good relationships are highly important for the development of cohousing projects in Austria and an appreciation by society would be very supportive for them. Future research will still be necessary to gain a more holistic view for Austria, because conducted research focused on Lower Austrian projects.