Between 2012 and 2016, VITZTHUM Projektmanagement GmbH managed a total of 15 individual projects at 12 different locations in Hamburg, encompassing new construction, conversion, and renovation work. Some of these projects involved listed buildings. Sewers and outdoor facilities were renovated, and new sports halls were constructed. The majority of the work was carried out while the facilities remained operational, in phased construction. The specific locations were as follows: