Arvin, Pezhman, and the team at Rigid Frame did a fantastic job preparing the structural drawings for the underpinning of our basement in downtown Toronto. They also applied for all of the required permits on our behalf, conducted all of the site visits during construction, and did our floor plan drawings for the future finishing of the basement. They worked very well alongside our underpinning contractor. They're super professional, easy to get in touch with, and are always available to answer questions. Highly recommended.