Addition to Nordstadt Karlsruhe
Wooden extension: 526 CU from total: 1651 CU
76149 Karlsruhe: Conversion of the former U.S. housing estate. 526 units of the total of 1,651 units of this existing housing estate were built as storeys in timber frame construction in the low-energy standard. The additional storeys in timber construction alone are the largest coherent timber housing estate in Europe in the last 40 years. Completion: 2000
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Platensiedlung in Frankfurt-Ginnheim
Wooden extension: 380 CU from total: 992 CUD - Frankfurt a.M. Ginnheim: The 342 existing apartments in the 19 three-storey row buildings will be renovated to improve energy efficiency (insulation and new windows) and two storeys will be added. A total of around 680 new, mainly smaller apartments are being created. 300 apartments are being built in 15 new buildings in so-called gate and bridge houses. Architecture: Stefan Forster (Frankfurt). Construction began in 2017. Completion of the storeys: End of 2019. Completion of the new buildings (post-densification): 2023.
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Stegerwaldsiedlung, Cologne
Wooden extension: 95 CU from total: 689 CU 
51063 Cologne-Mülheim: The state of North Rhine-Westphalia has named the Stegerwaldsiedlung in the Cologne district of Mülheim as the 87th climate protection estate. With 968 kWp, it has the largest roof-integrated PV system on a housing estate in NRW and the third largest in Germany. 689 residential units of the Cologne housing estate from the 1950s were refurbished for energy efficiency and the energy generation systems were renewed. Completion: 2019
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Extension in Berlin-Weißensee
Wooden extension: 87 WE from total: 457 CU
13086 Berlin: The complex was taken over again by GeWoSüd after reunification, fundamentally renovated and extended by 87 apartments by adding attic storeys. These were planned by the Berlin architect Carlos Zwick. In total, the estate consists of 457 apartments. Completion of the extension: 1996
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Addition of storeys to multi-family houses Berlin-Lankwitz
Wooden extension: 84 WE from total: 293 CU
12249 Berlin-Lankwitz: Apartment buildings. Elevation and redensification. Baufrösche Kassel/Berlin. 148 flats existing, 84 flats with additional storeys and 61 flats with extensions. Reconstruction: 1995 to 1998. socially acceptable redevelopment, approx. 1,420 €/m² floor space; Berlin Environmental Prize 2001.
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Ford housing estate in Cologne
Wooden extension: 45 CU from total: 345 CU
50735 Cologne-Niehl: Redevelopment and addition of 11 apartment blocks with rental apartments. 300 flats before refurbishment, 345 flats after refurbishment. Average 47 m² before refurbishment, approx. 55 m² after refurbishment. Architecture: ARCHPLAN Münster. Client: State development company (LEG Wohnen NRW). Completion: 2010
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buntStift" housing project
Wooden extension: 4 WE from total: 21 WE
44892 Bochum: Multi-generation housing project in Bochum
Completion: 2011
Size: 21 WE
Innovative elements:
- Conversion of a vacant building into a multi-generation house
- Ecologically sustainable structural concept and barrier-free living
- Active promotion of neighbourly coexistence
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