North America Construction (1993) Ltd., - NAC Constructors Ltd. (NAC) is Canada’s leading multi-trade builder and provides true Master Builder services to the civil, municipal and energy biofuel marketplaces. The depth of our resources is evident in the variety of projects we construct. From water filtration to wastewater treatment; dams to ethanol; we build it all…and more! The contagious energy and excitement within NAC creates a variety of rewarding and challenging opportunities for individuals to achieve their goals.