The Stuttgarter Platz across S-bahnhof Charlottenburg is going to be refurbished.
and this:
Urban Development & Planning - Office Location Berlin
Development 1990-2000: New Construction
Approximately 7 million m² of new office space have been built since 1990, and approximately 5 million m² of them have meanwhile been absorbed by the market.
Net assimilation of office space over the past ten years has averaged 440,000 m² per year.
Newly built office space is distributed as follows:
* Inner city, including the two central business districts 50%
* Locations along the rapid transit rail ring 20%
* Locations in outer boroughs 30%.
A significant proportion of this amount was accounted for by offices occupied and leased by the federal government (900,000 m²).