Holtappels was trained at the Staatliche Kunstakademie in Düsseldorf under K.O. Götz, and combined his artistic education with studies in philosophy and art history. This interdisciplinary background informed a practice that moved between artistic experimentation, teaching, and institutional development. From early on, he worked across these domains not as separate tracks, but as connected forms of inquiry into perception, embodiment, and communication.

A significant part of his artistic output was developed in collaboration with Klaus Boegel Their performances, installations, and video works emerged from what they described as experimental investigation: a process-driven approach in which actions, bodily states, and structured situations became the basis for exploring emotional expression and interpersonal dynamics. Video and photographic documentation were not treated as autonomous artworks, but as integral tools within a broader investigative framework.

This work placed them among the early European practitioners engaging with performance and video as interrelated fields, where the act, its recording, and its reflection were part of a continuous cycle. Their practice contributed to an expanding understanding of the body as both subject and instrument of artistic research.

Alongside his artistic work, Holtappels developed a long-standing role in art education, teaching and later leading programmes at the Hogeschool voor de Kunsten Arnhem (1991-2010). His pedagogical approach reflected the same openness to process and experimentation that characterised his artistic practice, influencing generations of artists working across performance, media, and interdisciplinary practices.

In 1998, Holtappels succeeded René Coelho as director of Montevideo / Time Based Arts in Amsterdam. Building on Montevideo’s pioneering role in video art distribution and production, he guided the organisation through a period of significant transformation. As the field of media art expanded and digital technologies reshaped artistic production, questions of preservation, access, and contextualisation became increasingly central.

Under his leadership, the Netherlands Media Art Institute (NIMk), developed its focus on exhibitions, artists in residence and research into time-based media. Continuing conservation and distribution. These efforts were instrumental in establishing frameworks for understanding media artworks not as static objects, but as works dependent on technological, conceptual, and contextual conditions that require ongoing interpretation and care.

This legacy remains foundational to LI-MA, which continues and extends the archival, preservation, and research practices developed within Montevideo and NIMk. Holtappels’ contribution is part of this institutional continuity, in which artistic experimentation and media art preservation are understood as interconnected fields.

Beyond his directorship, he served on numerous boards and advisory committees in the Netherlands and internationally, contributing to broader discussions on visual art, cultural policy, and interdisciplinary practice. Between 2000 and 2005, he was chairman of the committee on Visual Art and Design for the Cultural Council. He was a board member of 5 Days Off Media, Dyne.org, Nan Hoover Foundation, and CASCO, Utrecht, and was is on the advisory boards of the Center of Art, Sangeorgiu de Mures and the Museum of Contemporary Art, Bucharest (both in Romania). Throughout these roles, he maintained a consistent engagement with institutions as active spaces of production, reflection, and responsibility.

Seen in retrospect, Holtappels’ trajectory reflects a sustained inquiry into how artistic experience is shaped and transmitted, as well as documented. Whether through collaborative performance work, educational practice, or institutional leadership, his approach consistently foregrounded process over object, and exchange over finality.