Wiesbaden – Röntgenstraße

A residential building at Röntgenstraße 26–32 in Wiesbaden is currently being fully modernized as part of a forward-thinking renovation. The project’s goal is to achieve climate-neutral operation by implementing extensive energy upgrades and integrating innovative technologies. These improvements will significantly reduce both energy demand and operating costs, enabling the building to reach new-build standards (energy efficiency class A+) and substantially increasing its value.

Under Construction

Building Class

Full Floors

Residential Units

Living Area

2074 m²

Year Built

1972

Client

GWW Wiesbadener Wohnbaugesellschaft mbH

Overview

The Challenge:

The building at Röntgenstraße 26–32 in Wiesbaden, though structurally sound, no longer met current energy standards and experienced significant heat loss—a common issue among older properties. To address this, a comprehensive renovation was needed to transform the building into an efficiency house that meets the rigorous NetZero EH 55 EE standard.

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The Approach:

The project focused on a serial energy renovation, starting with a complete renewal of the building envelope. This included new roof insulation, the installation of prefabricated, highly insulated façade elements with new windows, and thorough insulation of the basement ceiling to minimize heat loss. The entire building’s technical systems were modernized: a new, efficient heating system now provides space heating and hot water, supported by a state-of-the-art ventilation system to maintain a healthy indoor climate. A rooftop photovoltaic system was also installed to generate renewable energy on site and support climate-neutral operation.

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The Result:

The building has been transformed into an efficiency house that meets the NetZero EH 55 EE standard, characterized by extremely low energy demand and climate-neutral performance. Extensive insulation and modern building technology have led to a dramatic reduction in energy costs and a significant improvement in living comfort and indoor air quality. This Wiesbaden project stands as a model for sustainable renovation, delivering clear benefits for residents, property owners, and the environment.