EllisDon is one of the country's largest construction companies, EllisDon is a design/build firm that offers a range of services, including preconstruction, engineering, general contracting, and project management. Other services include arranging project financing for clients and updating and designing IT and communication systems for building infrastructures. EllisDon's major projects have included airports, hospitals, office buildings, schools, and shopping centers. The firm does most of its business in Canada, but it has also completed major projects in the US, United Arab Emirates, West Indies, Greece, and other countries.