Multiplex is main contractor on the £700m One Nine Elms project, which consists of the 200m tall City Tower, 165m tall River Tower and the luxury 5-star Wanda Vista hotel.
The deal is a major coup for T Clarke helping to boost the firm London order book. It will be on site in 2018.
One Nine Elms is being built for Chinese developer Dalian Wanda and ranks as the largest single property investment in Europe by a Chinese property developer.