Reimagining a Residential Landmark with Sustainable Elegance The Hohes Haus in Jona the seamless integration of sustainability and architectural integrity. This ten-story residential building has been thoughtfully renovated by BGS & Partner Architekten, maintaining its occupancy throughout—a remarkable social and logistical achievement. The renovation emphasizes the building's inherent verticality, accentuated by a play of flat and profiled fiber cement panels. These materials highlight the existing structure, particularly the distinctive exposed aggregate concrete balconies. A newly designed canopy crowns the building, incorporating nesting boxes for swifts, while a vividly colored base firmly roots the structure within its urban context. Central to the renovation is the incorporation of a colored photovoltaic system into the ventilated facade. These modules, arranged as vertical bands on the east and west elevations, offer a subtle greenish-gray hue that harmonizes with the facade's aesthetic. With an output of 25.2 kWp, this system forms a crucial part of a decentralized energy strategy, utilizing both roof and facade surfaces. Fire protection requirements have been creatively addressed with pilaster strips that interrupt the PV fields. As a prominent urban landmark, the Hohes Haus is visible from afar, shaping the cityscape with its renewed presence.

## Design Highlights

Emphasis on verticality through fiber cement panels Integration of a colored photovoltaic system Enhanced earthquake safety with additional corner columns Nesting boxes for swifts incorporated into the canopy Strongly colored base for urban anchoring

## Key Facts