There is little empirical evidence on non-take-up of housing allowances. In most cases, corresponding analyses focus on social assistance benefits. First, the policy brief discusses general determinants, covariates, and consequences of non-take up of social benefits as well as potential policies to address them. Then it describes typical characteristics and features of housing allowances. After reviewing the existing literature, the policy brief analyses the extent and covariates of non-take-up of housing allowance in the Austrian federal state Upper Austria to shed some light on the issue.