- STRABAG Real Estate and Otto Wulff have been awarded the contract FMHH Facility Manager Hamburg GmbH, a joint venture company of Otto Wulff and the Schultz Group, will be responsible for infrastructural facility management; STRABAG Property and Facility Services GmbH will take over technical building management and relocation management. A joint venture between Ed. Züblin AG and Hamburg's tradition-steeped Otto Wulff Bauunternehmung GmbH will carry out the construction