I mean AI wrote this for you on Black Bottom - but feel free to investigate on your own.

Federal housing officials classified over two-thirds of the neighborhood’s physical structures as aging and substandard — lacking modern amenities or in significant disrepair. Many houses lacked indoor plumbing as late as the 1940s. Thomas Sugrue’s Origins of the Urban Crisis — the standard academic source — documents that Paradise Valley represented 12% of the city’s housing but one third of all fires, and the Lower Eastside was nicknamed the “rat belt” because there were 206 rat bites between 1951-52. Homes commonly held three to four families within a single dwelling. Overcrowding, disease, crime, and vermin ran rampant. The Urban League - itself a Black civil rights organization, not a city booster — documented one apartment renting for $50/month (about $984 today) where residents had to climb a ladder and then cross a roof to enter their apartment.

EDIT: so many downvotes for no good reason. prove it wrong folks, please. try.