Preventing the building turbo from turning into a corruption turbo: Why landownership transparency is now essential Authors Thomas Hartmann Technische Universität Dortmund https://orcid.org/0000-0001-6707-7174 DOI: https://doi.org/10.14512/rur.3577 Keywords: Bauturbo, Corruption, Transparency of Ownership, Land Policy, Planning Law Abstract The German law for „Accelerating Housing Construction and Securing Housing“ – the so-called Bauturbo – fundamentally changes key mechanisms of democratic control in the German planning system. The new provisions, especially the new possibility of extensive deviations from the Federal Building Code (§246e BauGB) combined with the regulation on „presumption of municipal consent“ (§36a BauGB) shift decision-making processes from democratically legitimized planning procedures toward simplified administrative acts. This change creates broader discretionary powers, information and power asymmetries between public authorities and private actors and increasing intransparency in land policy. These structural changes may foster corruption by enabling hidden influences on land value increases. The risk arises less from individual misconduct than from the systemic incentives generated by the Bauturbo itself. This paper highlights these risks and serves as a basis for discussion on how to mitigate them. Strengthening transparency of land ownership is proposed as a key approach to reinforce the legitimacy of planning law and restore trust in fair and accountable development processes. Downloads Download data is not yet available. Author Biography Thomas Hartmann, Technische Universität Dortmund Thomas Hartmann ist Professor für Bodenpolitik, Bodenmanagement und kommunales Vermessungwesen an der Fakultät Raumplanung der TU Dortmund (www.bodenpolitik.de). Sein Forschungsschwerpunkt liegt auf Strategien kommunaler Bodenpolitik und dem Zusammenhang zwischen Klimaanpassung und Eigentumsrechten. In seiner Forschung kombiniert er eine ingenieurwissenschaftliche Betrachtungsweise (Dipl.-Ing.) mit einer politikwissenschaftlichen Perspektive (Dr. rer.pol.). References Battis, U.; Krautzberger, M.; Löhr, D. (2022): Baugesetzbuch: BauGB – Kommentar. München. Chiodelli, F.; Moroni, S. (2015): Corruption in land-use issues: A crucial challenge for planning theory and practice. In: Town Planning Review 86, 4, 437–455. https://doi.org/10.3828/tpr.2015.27 Davy, B. (2012): Land policy. A German perspective on planning and property. Farnham. Dral, G. J.; Witte, P. A.; Hartmann, T. (2023): The impact of participatory decision-making on legitimacy in planning. In: disP – The Planning Review 59, 1, 98–113. https://doi.org/10.1080/02513625.2023.2229633 Eichhorn, S.; Holl, C.; Jehling, M.; Münter, A.; Pätzold, R.; Preuß, T.; Verbücheln, M. (2025): Für eine Wohnungsbaudebatte, die Flächen dort sucht, wo sie gebraucht werden. Ein Kommentar zur InWIS-Studie „Wohnungsbau braucht (mehr) Fläche“. In: Raumforschung und Raumordnung | Spatial Research and Planning 83, 5, 345–349. https://doi.org/10.14512/rur.3425 Hartmann, T.; Maurer, A. (2023): Bodenpolitik und Wertermittlung. In: Schaper, D. (Hrsg.): Aktuelle Herausforderungen für die Immobilienbewertung, Immobilienwirtschaft und Bo-denpolitik. Festschrift für Wolfgang Kleiber zum 80. Geburtstag. Köln, 91–98. Hartmann, T.; Roboger, C.; Eisenhut, B.; Novak, J. (2024): Land ownership transparency. A comparison of seven European countries. Bonn. = BBSR-Online-Publikation 95/2024. Hengstermann, A.; Hartmann, T. (2021): Grund zum Wohnen – Das Baulandmobilisierungsgesetz aus internationaler Perspektive. In: pnd rethinking planning 1, 30–41. https://doi.org/10.18154/RWTH-2021-01677 Hickman, H.; Linovski, O.; Sturzaker, J. (2025): Who sets the ethical boundaries? The privatisation of checks and balance in planning. In: Planning Practice and Research. https://doi.org/10.1080/02697459.2025.2576113 Koumpias, A.; Martínez-Vázquez, J.; Sanz-Arcega, E. (2022): Housing bubbles and land planning corruption: Evidence from Spain’s largest municipalities. In: Applied Economic Analysis 30, 89, 132–150. https://doi.org/10.1108/AEA-11-2020-0159 Lübbe-Wolff, G. (2025): Der ehrliche Deutsche: Über Problemverleugnung, Moralismus und Regelungsillusion in Sachen Korruption. Frankfurt am Main. Muslim, M.; Mais, R. G. (2023): The Interplay between Transparency, Accountability, and Corruption: A Contemporary Discourse. In: Advances: Jurnal Ekonomi & Bisnis 1, 6, 332–346. https://doi.org/10.60079/ajeb.v1i6.268 Needham, B. (2006): Planning, law and economics. An investigation of the rules we make for using land. London. Salvador, M.; del Valle Inclán, D. (2025): Transparency in Public Management: A Key Element in the Fight against Corruption. In: Munzhedzi, H. (ed.): Challenges in Public Policy and Administration [Working Title]. https://doi.org/10.5772/intechopen.1011297 Downloads PDF (German) HTML (German) XML (German) Published 2026-01-12 Issue Online First Section Commentary License Copyright (c) 2026 Thomas Hartmann This work is licensed under a Creative Commons Attribution 4.0 International License. Articles in Raumforschung und Raumordnung – Spatial Research and Planning are published under a Creative Commons license. From Vol. 79 No. 2 (2021), the license applied is CC BY 4.0. From Vol. 77 No. 1 to Vol. 79 No.1, articles were published under a CC BY-SA license. Earlier volumes have been re-published by oekom 2022 under the Creative Commons Attribution 4.0 International License CC BY 4.0. How to Cite 1.Hartmann T. Preventing the building turbo from turning into a corruption turbo: Why landownership transparency is now essential. RuR [Internet]. 2026 Jan. 12 [cited 2026 Feb. 11];. Available from: https://rur.oekom.de/index.php/rur/article/view/3577 More Citation Formats ACM ACS APA ABNT Chicago Harvard IEEE MLA Turabian Vancouver Download Citation Endnote/Zotero/Mendeley (RIS) BibTeX Share Funding data Deutsche Forschungsgemeinschaft Grant numbers 502663987
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