The division, based at Westpoint Business Park in Paisley since a move in January, operates across west, central and southern Scotland employing around 260 people.
Among the contracts it has secured is a £2.5m design and construction agreement to deliver a new heliport for the Scottish Exhibition and Conference Centre.
It is working on a £4.5m civil engineering project for a nine turbine wind farm in Earlseat, Fife for Carbon Free Earlseat.
Balfour Beatty has already completed similar work on the four turbine Neilston Community Wind Farm in East Renfrewshire that opened earlier this year.
Edinburgh University has also awarded Balfour Beatty several contracts in 2013.
The business is also working on a platform for a power distribution system in the Scottish Borders on behalf of SP Power Systems.
Stephen Scott, delivery unit managing director, said: "It is particularly rewarding to have secured so much repeat business."
Its construction arm employs 1500 people in total with other offices in Aberdeen, Edinburgh, Hillington and Perth and factories in Glasgow, Kintore and Shotts.