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Research is revealing an increasing number of positive effects of nature for humans. At the same time, biodiversity in cities, where most humans live, is often low or in decline. Tangible solutions are needed to increase urban biodiversity. Architecture is a key discipline that has considerable influence on the built‐up area of cities, thereby influencing urban biodiversity. In general, architects do not design for biodiversity. Conversely, urban conservation planning generally focuses on the limited space free of buildings and does not embrace architecture as an important discipline for the creation of urban green infrastructure. In this paper, we argue that the promotion of biodiversity needs to become a key driving force of architectural design. This requires a new multi‐species design paradigm that considers both human and non‐human needs. Such a design approach needs to maintain the standards of the architectural profession, including the aim to increase the well‐being of humans in buildings. Yet, it also needs to add other stakeholders, organisms such as animals, plants and even microbiota. New buildings designed for humans and other inhabitants can then increase biodiversity in cities and also increase the benefits that humans can derive from close proximity to nature. We review the challenges that this new design approach poses for both architecture and ecology and show that multi‐species‐design goes beyond existing approaches in architecture and ecology. The new design approach needs to make ecological knowledge available to the architectural design process, enabling practitioners to find architectural solutions that can facilitate synergies from a multi‐species perspective. We propose that a first step in creating such a multi‐species habitat is the design of buildings with an ecolope, a multi criteria‐designed building envelope that takes into account the needs of diverse organisms. Because there is no framework to design such an ecolope, we illustrate how multi‐species design needs to draw on knowledge from ecology, as well as architecture, and design computation. We discuss how architectures designed via a multi‐species approach can be an important step in establishing beneficial human–nature relationships in cities, and contribute to human well‐being and biodiversity conservation. Read the free Plain Language Summary for this article on the Journal blog.

This paper introduces and elaborates a specific approach to architectural design entitled ‘performance-oriented architecture’ based on a redefinition of the concept of ‘performance’ in relation to the discipline of architecture and set within a biological paradigm. The concept of ‘performance’ evolved out of a series of intellectual efforts that had broad consequences, brining about a paradigm shift in the humanities referred to as the ‘performative turn’. These efforts commenced in the 1940s and 1950s and had significant impact also on the sciences, deriving what is referred to as the ‘performative idiom’. Here the question is raised as to what ‘performance’ in the context of architecture may entail. The approach introduced con­trasts previous ones that focused either on questions of representation and meaning in architecture, or, alternatively that have treated performance as synonymous to function placed in the context of post-design functional optimisation. Contrasting these previous efforts performance is here reformulated as a driving concept for design that helps re-con­solidate form and function into a synergetic relation with the dynamics of natural, cultural and social environments, and in so doing, locate performative capacity - ‘ active agency’ - in the spatial and material organisation of architecture, in the human subject and the environ­ment through the dynamic interaction between these four domains. In pursuing this approach the potential of a close disciplinary affiliation between architecture and biology is examined, so as to locate a suitable paradigm for performance in the discipline of biology and its var­ious sub-disciplines, in its various foci and modes of inquiry, and, moreover, in biological syst­ems.