The 11 storey office building is currently occupied by the Department for Communities and Local Government (DCLG) under a lease due to expire at the end of September this year.
Tishman Speyer said in the planning statement submitted with the application that it is looking to bring forward "an office refurbishment of the highest architectural quality and sustainable design, both internally and externally".
Under the plans the building will be refurbished and remodelled to create new offices on all the upper levels, with six roof terraces on floors six to 11. The ground floor of the building would be converted to provide shop and cafe space.
"The overall objective is to reinvigorate the existing building, providing a better quality building that seeks to further enhance sustainability, performance and efficiency, as well as providing improved office accommodation capable of meeting modern occupational requirements, whilst also providing for new retail/café use at street level to contribute to the mix of uses in the area," said the planning statement.
