The Sonnenstraße residential project was developed on a 1,300 m² plot in a finely grained villa district near the historic center of Innsbruck. The site’s gentle southward slope and the presence of mature trees formed key parameters for the urban and architectural design process.
A central conceptual reference was a haiku by poet Nora Gomringer:
Ein gutes Haus ist
Weg nicht Ziel
ist Dach und Raum
ist Menschen Heimat,
Kern und Traum
This poetic text informed the architectural approach: the design focused on formal clarity, intentional reduction, and spatial qualities beyond pure functionality. Principles of Japanese aesthetics such as Wabi-Sabi and Kire were adopted as guiding ideas and translated into materiality, structure, and detailing.
The building is composed of three interlocking volumes of different heights, connected by a central joint. This volumetric
arrangement responds to the scale of the surrounding development and ensures balanced lighting and differentiated visual relationships. The connecting joint serves both circulation and structural articulation.
The building houses six residential units. One of them, a penthouse, occupies the entire top floor and includes views above the tree canopy and direct access to a private garden. The floor plans were designed to optimize daylight, sightlines, and connections to outdoor space. Generous ceiling heights were achieved through precise sectional shifts and spatial interlocking.
Construction was based on solid masonry using traditional brickwork, complemented by natural materials such as local larch wood and mineral-based plaster finishes. The facade is characterized by a multi-layered, lightly sanded plaster that produces a soft, cloud-like texture depending on the light conditions. The muted red tones of the exterior reference natural and cultural imagery.
A continuous design element throughout the project is the timber core, visible at window reveals, balconies, and junctions between volumes. This emphasizes material hierarchy and contributes to a differentiated spatial atmosphere.
Sustainable building services were a key part of the project: geothermal heating, photovoltaics, and a controlled ventilation system ensure both high energy efficiency and user comfort. The project was developed in close collaboration with future residents. Architecture, planning, execution, and development were handled within a fully integrated process.