Closing Three Urban Gaps
Block perimeter completion, rooftop extension, and a new rear structure
Inserting a new building into an established neighborhood demands a delicate balance from architects. It must harmonize without disappearing, make an impression while remaining restrained—modern yet respectful. Baumschulenstraße in Treptow offers a compelling example. The emerging firm Zappe Architekten & Partner was commissioned to design a corner structure that completes the block's perimeter while seamlessly connecting to its neighboring buildings on both sides.
The multi-storey residential complex—and herein lies the architecture—makes no immediate impression. It's only upon closer examination that one discovers a completely distinct visual language with remarkable presence. Decades separate it from its surroundings: primarily pre-war buildings in this modest, unpretentious neighborhood. The grey façade already sets itself apart from the surrounding beige, brown, and ochre palettes. The base features structured concrete panels, which give way to textured plaster and, on the upper floors, smooth plaster. The architects designed the windows themselves—industrial-style frames with metal mullions in an unconventional proportion. These are actually double-skin windows: externally, two panes of insulated glass in a GRP (glass fiber reinforced plastic) frame; internally, single-pane frames. Developed in collaboration with a master carpenter, they serve a dual purpose: acoustic insulation against the street's heavy traffic, plus protection from temperature extremes. At the client's request, the inscription "Tolerance – No Hate" adorns the façade. The building respects the surrounding cornice height, yet sacrifices one floor to achieve ceiling heights typically reserved for historic buildings. The attic, with its gentle slope echoing a mansard profile, ensures minimal roof angles in the rooms above. Notably, the attic extends across to the neighboring structures, effectively adding an extra floor to each. The ground level houses commercial spaces—a café called "Blüte" now activates the corner. The courtyard, too, was reimagined: a four-storey coach house with floor-to-ceiling glazing and safety railings opens up loft-like flexible layouts for residents.
Photos:
Caroline Prange
www.carolineprange.com
(Published in CUBE Berlin 02|25)
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