Rooftop Extension Wimbergergasse by Heimspiel Architektur

Nestled within a charming block of Vienna’s distinguished 7th District, this project breathes new life into a residential structure originally dating from 1890. The intervention is a sensitive yet assertive rooftop extension, realized through a contemporary, lightweight steel construction. This vertical addition introduces three distinct, high-quality residential units – including two maisonettes – each afforded generous private outdoor space via spacious terraces and balconies.

The design strategy consciously negotiates the relationship between the historic streetscape and the new architectural volume. On the street-facing elevation, the existing cornice has been meticulously preserved, allowing the new, sloping roof to seamlessly align with the district’s established roofscape. This dialogue is most evident at the first roof level, where the staggered cubature introduces a deliberate break, or “setback”. This strategic maneuver not only articulates the transition between the 19th-century façade and the contemporary addition, but also carves out intimate open-air spaces for the east-facing bedrooms. By contrast, the living areas and open kitchens are oriented toward the courtyard, accessing the principal balconies and roof terraces to maximize daylight and privacy.