Otto Wulff Bauunternehmung GmbH offers commercial building construction services. For the Hamburg-based family business Otto Wulff, quality, reliability and responsibility have been in demand for decades.Anyone looking for a general contractor in Hamburg can not ignore the Otto Wulff construction company. The third generation run family business is considered a pioneering real estate full-service provider in the region. For the Hamburg-based family business Otto Wulff, quality, reliability and responsibility have been in demand for decades.