Today, there is a housing shortage in the larger cities. This together with the long housing waiting lists makes it difficult for younger people to make a housing career and invest in a condominium. In 2014, the Swedish Parliament introduced the reform of attefallshus with the aim of reducing the housing shortage in the country and facilitating entry into the housing market. The work studies whether an attefall block can be a favorable housing concept and an example of such a housing concept is designed. The purpose of the study is to analyze which legal obstacles limit a block of attefall houses and whether the housing concept can possibly reduce the housing shortage. To answer the study's purpose and questions, interviews were conducted with experienced people in the field. The results show that very few attefallshus are currently used as dwellings. Instead they have other functions. Furthermore, the results show that the legal obstacles that limit an Attefall block are, according to the study, availability to existing one- or two residential buildings that allows additional buildings of in total 30 on the plot. The interviewees believe that the concept should change the name to single-family neighborhoods and establish detailed development plans specifically for this. The conclusions are that an attefall block will not be economically favorable, is impracticable and not a solution for housing shortages.