The London Borough of Camden has agreed the first major office building of its £2 billion Kings Cross development.
The building is designed by Allies & Morrison and Phorphyrios, for developer Argent, reports Building Design.
A mixed-use development, the build will include a mixture of office, retail and small business units.
The design also achieved a BR Environmental Assessment Method (BREAM) "excellent’ rating because of eco-construction techniques and the integration of green technologies.
BREAM is the oldest and most established eco-rating system for buildings.
This build scored highly because of its CHP plant, rainwater harvesting and greywater recycling.
The King’s Cross development was give the go-ahead in December 2006, with planning permission for nearly eight million square feet of mixed use property.
The permission includes up to 25 large office buildings, 20 new streets, ten public spaces and up to 2,000 homes.
Work will begin in May and is projected to continue until early 2012.