Background: Quality of life is a multi-dimensional concept, which is considered a major outcome parameter in dementia care and it is recommended as a way to evaluate the quality of care. Because of a missing gold standard, the assessment of quality of life is not clarified yet. Because of this, various assessments were developed. For the new German setting of shared-housing arrangements, experiences in quality of life assessments are not available. This means, it is unknown which instrument provides valid data. Objectives: The core aim of this project is to identify an appropriate scale to evaluate dementia-specific quality of life of residents in sharedhousing arrangements. Method: First of all, a systematic literature research will be conducted to provide available dementia-specific quality of life instruments. Based on the review, instruments will be selected, regarding the main topic of shared-housing arrangements. In the empirical part, various self- and proxy ratings will be applied. Expected results: It is expected to identify an appropriate scale to measure dementia-specific quality of life. The results allow studies in the future, to apply an instrument, which provides valid data. [ABSTRACT FROM AUTHOR]