Work will start in April on the glass-fronted four-storey building, which has been designed by architects Halliday Fraser Munro.
Once finished in November 2014, it will be home to the most advanced Human Nutrition Unit in the UK, in which human volunteers will help scientists study the complex relationship between diet and health.
The fit-out includes full installation of the fitted furniture and integration with all mechanical and electrical functions, as well as some low rise support building and landscaping.
Gordon Anderson, Lend Lease’s executive general manager, said: “Being named preferred main contractor for the Rowett Institute is a great result for Lend Lease.
“This project was identified in our business plan as a key win, further cementing our presence in the North East of Scotland. This is a tremendous achievement for the business.
“We are fully committed to the North East, and have been appointed to Aberdeenshire Council’s Capital Works Framework. We are developing strong relationships there.”
He added: “Lend Lease’s Scottish portfolio is growing. We are already building The Hydro in Glasgow, a technically-challenging arena development which will attract some of the biggest acts in the world, and the Technology and Innovation Centre (TIC) at the University of Strathclyde, playing a role in securing Scotland’s scientific and education legacy.”