This paper critically examines the prevailing paradigms of environmental and spatial justice, emphasising the existing disparities in policies that predominantly favour human interests while overlooking the fundamental rights and well-being of non-human species. Despite the growing acknowledgement of the importance of establishing a deeper connection between human and non-human actors for overall well-being, a pervasive speciesism mindset persists, distancing humans from the broader natural world. This separation from nature profoundly influences the formulation of policies and justice, establishing a bias that focuses primarily on human concerns and environmental conditions tailored to human well-being. Architects and planners, despite possessing the potential to enrich habitats for various species, frequently adopt human-centric approaches that marginalise other-than-human entities, restricting their access to the immediate surroundings of human territories and impeding opportunities for immersive nature experiences. This article advocates for a comprehensive paradigm shift in architectural practices, urging a more inclusive and equitable approach that extends spatial and environmental justice to encompass the diverse needs and rights of both human and non-human species within the urban landscape. The conclusions underscore the urgent need for architects and planners to re-evaluate their approaches, fostering an environment that supports coexistence and acknowledges the interconnectedness of all species. In the face of global biodiversity concerns and international frameworks such as the Kunming-Montreal Global Biodiversity Framework, the research contributes to the discourse on sustainable and ethical design practices, advocating for a future where spatial and environmental justice extends its reach beyond the confines of human experience to create a respectful and just coexistence with the entire ecological community.