[1] Companies in the Condrain Group construct roads, supply aggregate materials; produce concrete pipes, precast units and lighting poles; manufacture valves and fittings, install gas lines, power lines, fibre optic cables, and street lighting, build houses and commercial and industrial buildings, and develop land for community living.

[1] Other related companies have included broadband communication, vineyards, such as Vineland Estates in the Niagara Peninsula, and built golf courses.

Condrain conducts business mainly within the Greater Toronto Area, the Golden Horseshoe, Western Ontario, the Ottawa Region as well as in other provinces and the United States.

Another company under Condrain, Conelco, was founded in 1978 for the land servicing industry, specializing in the installation of underground power and telephone systems.

Con-Elco[7] acquired Fellmore Electrical Contractors in 1991 to produce roadway lighting and gas line installation.