Corsac Construction Ltd. is a Calgary construction and renovation company. We are built on the fellowship of professionals with many years of experience in the field. Our company is fully licensed and insured. Custom garages, basement development and home renovations are among the services we offer. Corsac Construction provides a wide range of residential construction services in Calgary and surrounding areas. Our services include garage building, basement development and home renovations. We have a friendly, positive and highly professional team. Garage project construction. Step-by-step process. Building walls and finishing exteriors.