The expansion of BG/BRG Perchtoldsdorf in Lower Austria transforms an established educational complex into a cohesive, future-ready campus. Designed by PLOV Architekten ZT GmbH, the project won first prize in an EU-wide competition launched in 2019 by Austria’s Federal Ministry of Education, Science and Research.

The design continues the school’s distinctive comb-like layout, extending its linear wings eastward to form a new three-story addition. This approach preserves the architectural rhythm of the original structure while introducing spatial efficiency and an environmentally optimized expansion.

The ensemble is unified by a generous forecourt that serves as both a public square and schoolyard, reinforcing the campus concept and enhancing social life. The project achieved Klimaaktiv Gold certification—Austria’s highest distinction for energy and climate performance.

Compact form and functional clarity

Access is redefined along Roseggergasse, where a new entrance in the existing basement creates an inviting arrival zone. The extension connects seamlessly to the multi-purpose and music rooms, which can merge for larger events. Flexible daycare and group rooms feature movable partitions that allow conversion into larger halls for conferences and exams.

A central zone, illuminated by skylights and a north-facing façade opening, promotes natural ventilation and daylight while forming an active space for communication and open learning.

Reducing embodied carbon

Sustainability began with a conservation-first approach. Existing structural elements were retained, with clear interfaces between old and new construction. This reduced demolition waste and preserved the embodied carbon of the original structure.

The new addition was designed as a compact structure, minimizing material use per square meter. Materials were chosen for low production energy and recycled content.

Passive strategies and responsible materials

Passive strategies—including a north-facing façade opening and strategically placed skylights—reduce reliance on artificial lighting and mechanical systems. The central atrium improves daylight distribution and airflow, enhancing comfort while lowering operational emissions.

To minimize long-term emissions and resource use, the project emphasizes durable, low-emission materials free of hazardous substances, simplifying recycling and maintenance. High-use areas such as classrooms and corridors employ resilient, low-VOC surfaces for longevity and ease of care.

Classrooms feature acoustic ceilings, and corridors incorporate linear baffle systems to improve sound quality. Rubber flooring was selected for its durability and low embodied energy.

Ceramic and porcelain tiles with regional sourcing provide durability and long service life, while aluminum façade systems support energy performance and design coherence. Energy-efficient lighting throughout classrooms and corridors further reduces operational demand.

Flexible and enduring design

The design allows short-term programmatic flexibility: group rooms can be reconfigured with mobile partitions and multi-purpose spaces open directly to outdoor areas for community events. Durable, low-impact materials extend the building’s lifespan and support partial material recovery at end of use.