Over 40 years of experience

Keystone International GmbH is lead by the founding members and only partners Frank Rückersberg and Reuben Ziper. They have over 4 decades of experience in which they have been confronted with many different cycles of the property market.

Frank Rückersberg, property salesman and former leading partner at Knight Frank, has key responsibilities such as tenant acquisition, lease contract management, consulting and marketing.

Reuben Ziper on the other hand has been project developer and estate manager within the property business since 1989. Therefore, project development as well as investor relations and financing are his responsibilities within Keystone International GmbH.