Nienburg — Hans-Böckler-Straße

Partnering for energy-efficient building modernization

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Together with GBN Wohnungsunternehmen GmbH, we are upgrading three residential buildings in Nienburg/Weser using serial renovation methods and targeted integration of renewable energy systems.

The buildings each have three full storeys and comprise a total of 54 residential units with approximately 2,166 m² of living space. Built in 1950, they currently have an energy efficiency rating of H.

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From efficiency class H to A:
By using prefabricated façade elements, modern building services, and connecting the buildings to an existing district heating network, the project will achieve energy efficiency class A and Efficiency House Level 55 upon completion.

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Key measures at a glance:

• Facade renovation with prefabricated, highly insulated elements
• Installation of a photovoltaic system for on-site power generation
• Basement ceiling insulation to reduce heat loss
• Serial riser renovation for future-ready and low-maintenance building systems
• Integration into the local utility’s heating network – including the addition of an air-to-water heat pump

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This project demonstrates how existing residential buildings can be modernised efficiently and sustainably using serial renovation – contributing to the transformation towards a climate-neutral building stock.

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Building data

Building class 3 | full floors 3 | residential units 54 | living space 2166 m² | built in 1950

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