When architectural studio Peter Ebner and friends was tapped to design a building with two residential units in Salzburg, Austria, the firm not only had to contend with an abandoned historic property onsite but also the challenge of pushback from the local community. Although the existing 16th-century building had been neglected for years, fear of change to the building’s historic appearance sparked anxiety among the community and drove the architects to take an especially sensitive approach. The resulting renovation and expansion includes two new floors strategically stacked above the historic part of the building to echo the roofline of the medieval Hohensalzburg Fortress. The design also integrates energy-efficient technologies to dramatically reduce the building’s power consumption.

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angled view of white building with metal facade on upper level

Peter Ebner and friends has dubbed the adaptive reuse project “a hidden treasure” after its secluded location and its unusual design, which merges historic and modern architecture. The original building was built in the 16th century under Prince-Archbishop Wolf Dietrich von Reitenau. Despite being used for a variety of purposes over the years, the building still retains the original Prince-Archbishop’s coat of arms on one of its facades. Romanesque columns from Salzburg Cathedral can also be found on the ground floor.

white building with metal facade on upper level surrounded by trees

white building with metal facade on upper level in background with grassy lawn in foreground

In contrast to the ivory-colored stucco facade of the renovated historic building, the two-story contemporary addition is wrapped in a reflective metal facade that the architects compare to an “iridescent water surface.” With two owners, the residential building features a flexible interior with rooms of various sizes and shapes that can be closed off or combined depending on intended use.

huge white room with wooden floors and curvy skylight

white room with wood floors and fuchsia couch

“[We] wanted to create a likeness of the historical city, with its alternation of squares and lanes, open and intimate spaces,” said the architects, who were inspired by the urban planning principle of diversity championed in Vincenzo Scamozzi’s treatise ‘The Ideal of Universal Architecture.’

Related: Minimalist timber home gracefully blends into the Austrian landscape

bathroom with brown marble floors and sinks and a white freestanding tub

outdoor patio beside a pool

Moreover, the Hidden Treasure Gestüthalle project also boasts a reduced energy footprint. Compared to similar residential buildings in Austria, the building consumes 90 percent less power thanks to green technologies, such as an underground heat pump.

+ Peter Ebner and friends

Via ArchDaily and Elizaveta Klepanova

Images by Paul Ott via Peter Ebner and friends