The Bolton-based quantity surveyor and BIM specialist has promoted Bernadette Lord to equity partner and commercial director.
Lord joined DSG in 2013 after eight years at Gleeds. The Bolton office has grown from two staff in April 2013 to nine today.
Steven Gosling, managing director of DSG, said: "These promotions form part of our strategic plan for growth in 2015 in the North West and nationally, and will strengthen our position for the future."
He added: "We've made huge strides to grow the business in 2014, but as the market continues to improve, now is the time for us to expand further. In addition as a leading QS working with BIM this is a key part of our strategy, expanding this area of our business even further."
DSG has offices in Newbury and Coventry. Kerry Dodds has been promoted from associate to operations director, working across all offices.