Officials on Tuesday held a ceremony to mark the opening of the rebuilt housing complex at Route 123 and Lakeview Avenue, part of a larger project that also will see a new structure on the site. Residents of the 60 units at the rebuilt complex started moving into the new building Monday, following issuance of a temporary Certificate of Occupancy, according to New Canaan Housing Authority Chair Scott Hobbs. “We feel really good about the outcome,” Hobbs said Tuesday prior to a formal ribbon-cutting at the new building. Despite COVID- and budget-related holdups, “we are relatively on schedule from where we started,” Hobbs said. “We are extremely happy about the finished product and believe that we have created an exceptional structure for our client/tenant occupants,” he said.