What does “affordable” housing mean in New Detroit?

“Finding affordable housing in Detroit is more challenging than you might think. That’s certainly been the case for 24-year-old Lisa.
Lisa, who wishes to remain anonymous, doesn’t make much money. She completed training at a technical school, but hasn’t found a job in her field and works at a national grocery store chain. Currently living with a friend and anxious for a home for herself and her son, she embarked on a search for affordable housing in Detroit”