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Buildings

The basis for the site development is the urban plan from the town planning competition, which defines the residential, commercial and industrial sections of the site. Detailed zoning plans are developed gradually for each block in a very innovative co-operative procedure with only a few invited investors and architects.

The last co-operative procedure in 2003 resulted in the construction of 600 flats. Since the end of 2004, they are being constructed by a range of investors. The largest investor of these blocks with 15,000 m_ built area alone is the Siedlungswerk Stuttgart (SWG). All flats will be monitored within the project and optimisation of the building energy concepts will take place directly at the project start. In this first construction phase 12 flats, 4 double houses and 6 single family houses will be developed and marketed. In the second construction phase, SWG will build a further 24 flats, 6 single family houses, 4 double houses and 5 row houses. The flats are constructed in multi-storey buildings.

The commercial and office sector with 18,000 m_ floor area will also be fully developed within the project time frame until 2010. Until then, space for 2500 office work places will be constructed. Based on the master plan each plot is developed separately with the investors. The frame set by the site owner currently only includes obligatory connection to the biomass co-generation plant and low energy building standards.

Funding of thermal cooling technologies will provide thermal cold at market prices to the investors, so that the Town of Ostfildern can set rules for forced summer connection to the district heating network for thermal cooling plant operation. The biomass co-generation plant is then used in summer for decentral cold production in the commercial sectors using adsorption and absorption technologies.
Therefore, in buildings with a high fresh air consumption the use of the cooling systems is attractive by the low heater stage and the small capital outlays.