Istanbul authorities have announced a subsidized rental housing program, and would-be tenants have plenty of questions about how it works. One is whether people living outside the city can apply at all. Another is whether Istanbul residents are free to apply for units in any district. There are also separate rules to untangle for applicants who already own a home and for tenants who buy a property while in social housing. The program runs on a three-year term, and the report lays out what happens when that period ends.