An increase in existing buildings could create a lot of new living space.
(Photo: dpa)
Frankfurt The prognosis is clear and clear. Adding a storey to the roof of residential buildings built between the post-war period and the late 1970s offers enormous potential. A study by the Kiel construction consulting institute Arge found that around 1.5 million new apartments could be built with on-top floors. And at a cost of less than 2300 euros per square meter.
This step is particularly interesting for owners. Because a new floor on the roof creates new, additional living space – without having to erect a completely new building.
Nevertheless, this type of densification is progressing rather slowly in Germany, which is also due to the comparatively strict framework conditions. There are quite a few pitfalls lurking along the way. What do interested parties have to consider? Where are the difficulties? These are the top five mistakes homeowners should avoid before starting construction.
1. First mistake: not involving the building authority
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