Hire to do full gutting, interior renovation and underpin basement in summer/fall 2004. The undermined the foundation of my house by cleaving off the brick footings and caused other structural damage. I had to hire structural and geotechnical engineers to confirm the many structural defects due to the extremely poor workmanship Group 5 provided. Group 5 came highly recommended but when they worked with me they convinced me that didn't need a building permit. I was lucky that the City of Toronto building inspectors were sympathetic to my situation and did not fine me for not having a permit. Had to fire Group 5 as they would not take any responsibility for problems they caused. I wanted to resolve our disputes via mediation but they refused to take responsibility for the defective work. Lost thousands of dollars and peace of mind over this renovation.