AH3 Architekten ZT GmbH

AH3 Architekten ZT GmbH is an Austrian architecture practice headquartered in Horn, Lower Austria. The firm presents itself as combining demanding architectural solutions with core competencies in comprehensive renovation and conversion of public and private building projects, ecological new builds and renovations, certifiable energy-efficient buildings built to the latest technical standards, timber construction and prefabricated modular construction, and integral planning. Its work therefore spans both new-build and existing-building contexts, with a clear emphasis on sustainability, energy performance and prefabrication. The practice is active in the Austrian market and has been recognised in regional architecture and housing awards. Its project 'Wohnbau Rosenburg Kamptal' won the 'Geschosswohnbau' (multi-storey housing) category at the Lower Austrian Housing Prize (NÖ Wohnbaupreis) 2025, announced on the firm's website in May 2026. The office also works on high-profile public commissions, including roof renovation at the Arbeiterkammer Wien, where existing gravel roofs were converted into zero-slope retention solar roofs — described by the firm as moving 'from gravel roof to climate roof'. As a ZT GmbH (Ziviltechniker GmbH), AH3 Architekten is organised under the Austrian professional framework for chartered engineering and architecture firms. It operates as a private company and does not appear to be listed on a stock exchange. Its service range covers architecture, general planning and integral planning, with particular expertise in energy-efficient and timber-based construction methods. The firm's public profile is maintained through its website, which highlights current projects, awards and technical innovations. Its portfolio and positioning suggest a focus on public and private clients in Lower Austria and Vienna, with an emphasis on renovation, adaptive reuse and sustainable construction.

AH3 Architekten ZT GmbH is an Austrian architecture practice based in Horn, Lower Austria. The firm operates as a Ziviltechniker GmbH (ZT GmbH), the Austrian legal form for chartered engineering and architecture companies. Its website presents a profile centred on combining demanding architectural solutions with core competencies in comprehensive renovation and conversion of public and private building projects, ecological new builds and renovations, certifiable energy-efficient buildings, timber construction and prefabricated modular construction, and integral planning. The practice has been active in the Austrian market and has gained recognition through regional awards and public projects. In May 2026, the firm announced that its project 'Wohnbau Rosenburg Kamptal' won the multi-storey housing category at the Lower Austrian Housing Prize (NÖ Wohnbaupreis) 2025. In April 2026, it reported on the roof renovation of the Arbeiterkammer Wien, where existing gravel roofs were converted into zero-slope retention solar roofs, described as a move 'from gravel roof to climate roof'. The firm's portfolio and communications indicate a focus on renovation, adaptive reuse and sustainable construction, with an emphasis on energy efficiency and timber-based methods. It serves both public and private clients, primarily in Lower Austria and Vienna. As a private company, it does not appear to be listed on a stock exchange. No founding year, founder or ownership details are provided in the available evidence.

• Wohnbau Rosenburg Kamptal wins NÖ Wohnbaupreis 2025 in the multi-storey housing category.

• Roof renovation of Arbeiterkammer Wien converts gravel roofs into zero-slope retention solar roofs.

Architecture practice focused on sustainable renovation, ecological new builds, timber construction and integral planning for public and private clients in Austria.

• Comprehensive renovation and conversion planning

  Planning services for extensive renovation and change of use of public and private building projects.

• Ecological new builds and renovations

  Design and planning of ecological new buildings and renovations.

• Certifiable energy-efficient buildings

  Buildings designed to be certifiably energy-efficient according to the latest technical standards.

• Timber construction and prefabricated modular construction

  Design and planning using timber construction and prefabricated modular methods.

• Integral planning

  Integrated planning services across disciplines.

1. 1ah3 Architekten ZT GmbH | Horn, Niederösterreichah3.at
2. 2AH3 Architekten ZT GmbHwikidata.org