Nussmüller Architekten ZT GmbH

Nussmüller Architekten ZT GmbH is an Austrian architecture firm headquartered in Graz. Founded in 1982, the practice was initially active under the name Gruppe 3 until 1995, when it adopted the Nussmüller name. The firm is led by architect Stefan Nussmüller, with advisory support from Werner and Inge Nussmüller, who bring decades of experience. The office has a broad portfolio spanning residential, educational, urban planning, cultural, exhibition, office, and commercial projects. It is particularly recognized for its expertise in timber construction and energy-efficient renovation and revitalization, fields in which it has won numerous awards and recognitions. The practice emphasizes human-centered design, sensitive handling of nature, use of natural materials, and skillful use of daylight. Recent activities include the nomination of the LBS/LLH Knittelfeld renovation for the BHP'26 award, a first prize in the urban design test for Wohnbau Salberg-Liezen, and the DECA Award 2025 for the RENVELOPE research project, which demonstrated serial renovation of large existing buildings using prefabricated facade modules. The firm remains privately held and active in the Austrian market.

Nussmüller Architekten ZT GmbH was established in 1982 in Graz, Austria. Until 1995, the practice operated under the name Gruppe 3. After the name change, it continued to build a reputation for innovative and creative solutions across a wide range of building types, including residential, educational, urban planning, cultural, exhibition, office, and commercial projects. The firm has particularly distinguished itself in timber construction and energy-efficient renovation and revitalization, earning multiple awards and recognitions. Under the leadership of architect Stefan Nussmüller, with advisory support from Werner and Inge Nussmüller, the office has maintained a human-centered design philosophy, emphasizing natural materials and daylight. In recent years, the firm has been involved in notable projects such as the renovation of LBS/LLH Knittelfeld, which was nominated for the BHP'26 award, and the RENVELOPE research project, which received the DECA Award 2025 for serial renovation using prefabricated facade modules. The practice also won first prize in the urban design test for Wohnbau Salberg-Liezen. The firm remains privately held and active in Austria.

• 2025

  Received DECA Award 2025 for RENVELOPE project.

• 2025

  Nominated for BHP'26 for LBS/LLH Knittelfeld renovation.

• 2025

  Won first prize in urban design test for Wohnbau Salberg-Liezen.

• 2024

  Live demonstration of serial renovation in Arenberggasse, Vienna.

• 1995

  Name changed from Gruppe 3 to Nussmüller Architekten.

• 1982

  Firm founded in Graz, Austria.

Innovative, human-centered architecture with a focus on timber construction and energy-efficient renovation.

• LBS/LLH Knittelfeld renovation

  Comprehensive modular thermal renovation of a school complex, completed on time for the start of school.

• RENVELOPE research project

  Research project on serial renovation of large existing buildings using prefabricated, multifunctional facade modules that integrate building services into the building envelope.

• Dachbodenausbau Franckstraße

  Attic conversion in Graz's Franckstraße, creating new living space above the city's rooftops.

1. 1NUSSMÜLLER ARCHITEKTEN – Architektur Studio in Graznussmueller.at
2. 2Über uns – NUSSMÜLLER ARCHITEKTENnussmueller.at
3. 3Nussmüller Architekten ZT GmbH - Wikidatawikidata.org