The £1bn project will be built by BAM. Subject to planning consent, construction could start around the turn of the year, with completion in 2016.
The development, designed by architect Allford Hall Monaghan Morris (AHMM), is composed of several buildings that range from seven to 11 storeys in height.
Because the development will be 330m long – longer than the 310m height of the Shard – Google is calling it a ‘groundscraper’.
Construction is of steel frame and cross laminated timber panels.
AHMM director Simon Allford said: "This building is underpinned by cutting edge design intelligence and technologies to provide a sophisticated twenty first century working environment for Google's staff. The architectural approach, which has taken inspiration from King’s Cross and St Pancras International railway stations, complements the local area’s strong industrial heritage and will be a building London can be proud of.”