“I know they expanded the building since initial discussions and construction materials and labor have increased significantly,” Eric Cousens, Auburn’s director of planning and permitting, said this week. “They also have traffic-related improvements required that were not part of initial estimates, including signage and striping changes at the adjacent intersection. The latest cost also includes the site work that may have been left out earlier.” Developer Danny Bouzianis with Auburn Marketplace said Wednesday that he’s building the space for four tenants on spec and doesn’t have leases lined up yet. The one with the drive-thru could be for food or financial services, he said. “Drive-thrus have gotten popular with the pandemic.”