The Challenge:

The Magdeburg-type building with just under 950 square meters of living space, four full floors, and typical weaknesses of its construction era such as poor insulation, high energy consumption, and lack of accessibility required a comprehensive and innovative solution. The client wanted not only to improve the building’s energy performance but also to create modern living comfort. The goal was a renovation that was fast to implement, economical, and architecturally appealing.

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The Approach:

ecoworks implemented the advanced Energiesprong approach with industrially prefabricated facade modules made of solid timber with wood-fiber insulation, integrated windows, and ventilation systems. This was complemented by a central air-to-water heat pump, a large-scale photovoltaic system with 152 modules and 61 kWp, a 60 kWh battery, and extensive interior modifications to enhance accessibility. A special feature was the installation of the facade without scaffolding. A mobile lift was sufficient to install the elements efficiently and precisely, significantly reducing the construction time compared to a conventional renovation.

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The Result:

Upon completion, the building achieved the Efficiency House 55 EE standard and energy efficiency class A+. Final energy demand dropped by almost 90 percent, and CO₂ emissions decreased by over 93 tons per year. Residents benefited from significantly lower energy costs, improved indoor climate, and a modern appearance. The project was supported by the Thuringian Ministry for Environment, Energy, and Nature Conservation with a 2 million euro grant, sending a strong signal for the energy transition in East Thuringia.