Only 6 of the 109 homes remain in reasonably good shapeBrad Pitt’s Make It Right Foundation built 109 eye-catching and affordable homes in New Orleans for a community where many people were displaced by damage wrought by Hurricane Katrina in 2005. Now this housing development is in disarray. The vast majority of the recently constructed homes are riddled with construction-related problems that have led to mold, termites, rotting wood, flooding and other woes. At least six are boarded up and abandoned. Many residents have filed lawsuits that are still pending. That is, a nonprofit that built houses with input from...