Apartments buildings have been growing in number as the main type of housing for upper middle and upper classes and as the main type of housing in Brazilian big cities. One-bedroom apartments emerge in a studio shape. This typology is not anymore associated with a minimal and cheap housing option, but indicated to upper-class people in valued regions of cities. Contradictory opinions justify the reasons why studios have been growing in numbers in Sao Paulo city. Studies assert that studios attend to the wishes of people who do not mind living in compact habitations if they are well located and present shared structure and services. These apartments are usually indicated for people who do not fit into a nuclear family and do not wish to be owners. Other studies present it as a consequence of the loss of purchasing power of families. Considering this point of view, for users, compact apartments are a way to live in a well location of the city and, for real estate developers, they are a way to maintain the interest. There is no information to answer if the users have no interest in purchasing housing and if the studio is the unit they want to rent. The objective of this research is to develop and validate a questionnaire for studio type dwellers in Sao Paulo city. In a real estate approach, the questionnaire aims to reveal needs and desires of users choosing a studio as their home. Based on marketing research, the study will be conclusive descriptive, obtaining primary data. Through a structured, undisguised, self-fulfilling and individually applied instrument proposed, it is expected to identify demographic, socio-economic characteristics, opinions, motivations and intentions regarding housing.