Städtebauliche Entwicklungsmaßnahme Wiesbaden-Ostfeld

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Description of the contract Initial situation: The City Council (Stadtverordnetenversammlung) of the State Capital of Wiesbaden (LHW) adopted on 17 September 2020 the implementation of the urban development area measure “Ostfeld” (SEM Ostfeld) under Section 165 of the German Building Code (Baugesetzbuch, BauGB) as a statute. The planning area is located in the east of Wiesbaden, in the immediate vicinity of the districts of Erbenheim and Mainz-Kastel, and comprises an area of approximately 450 hectares. The aim of the planning is to create a balanced mix of affordable housing, employment, open spaces, and biotope areas. A new district is to be developed that is innovative and future-proof, with predominantly residential use, while also providing sufficient space for commercial activities. On 15 July 2023, the LHW together with the City Development Company Wiesbaden (SEG) as the development entity and trustee for the urban development area measure Ostfeld commissioned a Europe-wide open two-phase urban planning and landscape planning ideas competition as a cooperative procedure. With its resolution of 3 July 2025, the City Council (STVV) of the LHW confirmed that the design of…

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