German listed property companies display a lack of transparency, according to the first transparency rating conducted by Bad Homburg, Germany-based Feri Rating & Research, with an average transparency level of just 36%. According to Feri, which also looked at Austrian and Swiss listed property companies, the most transparent listed German property firms of the 19 analysed are Polis AG and Fair Value, with transparency levels of 72% and 67%, respectively. The least transparent was Dibag Industriebau, at 15%.