Dozens of new, low-income apartments went on the rental market this September in Cass Corridor, the poorest neighborhood in Detroit. The $13 million Brainard Street Apartment project consists of 20 three-story brick buildings, with a total of 120 two- and three-bedroom units. But some of the best news to those waiting for homes was how fast the buildings went up. The project would have taken two years to build using traditional methods, according to Patrick Dorn, executive director of the Cass Corridor Neighborhood Development Corp., which managed the construction. But because Dorn opted for modular construction, it took only eight months from start to finish. That means residents got into their homes–and started paying rent–16 months earlier than they would have with a conventional construction approach.