Darnley is involved with a number of large-scale development projects. In the residential development area, Darnley is one of a select group of builders involved with Springthorpe at Macleod and Settlers Run at Cranbourne. Darnley's retirement developments fall under the Domainé brand name. Domainé at Doncaster offers apartments and villas in an intimate village-like atmosphere. Domainé at Mornington is a new development commencing in 2009.