With apologies for cross-posting and re-posting. Please see below a CFP for a Special Session at 4th Digital Geographies Conference, 3-4 November 2025, Lisbon. Data Voids: Understanding Digital Geographies of the Built Environment through Negativity and Refusal Emerging work in cultural geography has called on researchers to consider the (im)potential of 'negative' spaces and affects, asking what can be done with voids, limits and (in)capacities of different kinds (e.g. Bissell et al, 2021). Meanwhile, across media and cultural studies, critical data studies and feminist and political geography there is growing attention to the possibilities of refusal (e.g. James et al., 2023), particularly refusal as a collective and generative response to datafied systems. Both bodies of work are concerned with gaps, absences, silences and negation, though with varied foci and orientations toward action. Our session seeks to bring these literatures into conversation, with a particular focus on digital data and the built environment. The governance of built environments is increasingly informed and narrated through digital data - from 'evidence-based' planning, to the modelling of land/housing markets, and uses of 'proptech' to facilitate investment or discipline tenants, data seem almost as foundational as bricks and mortar. Yet such data are often characterised by absences, gaps and silences. Such absences prompt initiatives to fix, 'free' and/or repurpose the data in order to enhance access and transparency. However, recent work problematises transparency as a universal response to data-driven systems, pointing to refusal and data justice as approaches pursuing a structural shift relative to data harms. The session will seek theoretical and empirical contributions pertaining to questions including, but not limited to: * What might an attention to data voids from the perspective of negative geographies and refusal illuminate? * How do absences of data shape the built environment? * How do acts of refusal in the face of data-driven governance generate meaningful political and spatial alternatives? * How might methodological approaches to data be developed or reconceived through working with refusal and negativity? * How do we reckon with refusal alongside the politics of data suppression? * How do we register what or who is left absent (unbuilt, unseen or unheard) by/through data in its shaping of built spaces? Papers from this session will be considered for a potential Special Issue in a relevant journal. Submit abstracts (max 250 words) by *April 30, 2025* here<https://docs.google.com/forms/d/e/1FAIpQLSfA3KwwzulWPBEubfIyP3ZAsmeGN8KXebDhAoWborY-eulusQ/viewform>, selecting Special Session 8. More information about the conference can be found here<https://ceg.igot.ulisboa.pt/digitalgeographies/>. Notifications of acceptance will be sent by *May 15, 2025*. Session Organisers: Danielle Hynes & Samuel Mutter (National University of Ireland, Maynooth - Data Stories<https://datastories.maynoothuniversity.ie/> project)