ProperT deals with Rental, design, renovation and optimizing residential real estate developments, both old (ALTBAU), and new (NEUBAU) in Berlin, Germany. Since 2014, first as Einzelgeselschaft by Mr. Kefah Abu Gosh, and since 2016 as ProperT GmbH.
ProperT GmbH is operating from Berlin, from the famous Sony Center at Potsdamer Platz.