DETROIT – As Detroit continues to come back, Mayor Mike Duggan wants to make sure the city is affordable for everyone. On Tuesday, Duggan, along with nonprofit organizations and JPMorgan Chase, announced a $50 million pledge to keep affordable housing in the city. The overall goal is to raise $75 million to develop housing, such as the Saint Rita building. Affordable housing can quickly evaporate when new jobs and businesses move into the city. But over the last few years, Duggan said of 4,000 affordable housing units that have expired, all have been renewed.