Residence of foreign nationals in Iran are divided in two categories:
A - permanent Residence
B - Temporary Residence.
Permanent residence is issued for a foreigner who has chosen territory of Iran as its legal place of domicile, otherwise the residence of a foreign national is considered temporary. Permanent and temporary residence permit will be issued by Aliens Affairs Bureau of law enforcement forces, 8 days after arrival in Iran.
Foreign nationals are not allowed to remain in Iran longer than given permission in case of overstaying, offenders will be dealt according to the regulation.
Temporary and permanent residence permits may be renewed and extended. Exit permit visa for foreign nationals is also issued by the afore said bureau