EllisDon is an employee-owned construction services company that was founded and incorporated in 1951 in London, Ontario, Canada by brothers Don and David Ellis Smith. Headquartered in Mississauga, Ontario, Canada, EllisDons revenues are currently approximately $3.5 billion. Don Smith was born March 23, 1924 in Provost, Alberta, to Donald Bennett and Florence Smith. At age 27, Don quit a construction job to start his own company with his brother David Ellis Smith. On April 1, 1951, EllisDon was launched. Their first project was a small home renovation followed by Northdale Public School, a three-room schoolhouse located in London, Ontario. David left the company shortly after inception.