A crackdown on poor living conditions by the city of Gainesville has an untold number of tenants scrambling to find another affordable place to live. Since the beginning of the year, the city’s Code Enforcement Division has identified 63 properties, mostly in midtown neighborhoods, with code violations. Some of the houses inspected have been deemed by the City Building Official “to be dangerous and to threaten the safety of any occupants of the houses,” according to a formal letter sent last month to one of the property owners.