1. According to the relevant regulations, the lease contract of this kind of house is generally signed once a year, and some houses can be rented for five years. This is determined by the phased nature of public rental housing, that is, to provide transitional affordable housing for those who can't afford it temporarily.
Of course, if you always meet the rental conditions of this kind of house, then you can always enjoy the right to rent this kind of house. If you buy a house when you live, it no longer meets the requirements of public rental housing, then you should vacate the house and let it live for residents with more difficulties. Because the purpose of public rental housing is to ensure that people with difficulties in life have housing.