Section 38 of the Immigration Act, 2522 B.E., states, “House owners, heads of households, landlords, or managers of hotels who house foreign nationals staying in the kingdom temporarily must notify the local immigration authorities of such within 24 hours of the foreigner’s arrival.
MAKE SURE THAT YOUR LANDLORD HAS REPORTED YOUR STAY AND FILED TM30 FORM BEFORE CONTACTING THE IMMIGRATION OFFICE
The TM30 and its underlying laws are about the obligation of a landlord (or house master, possessor, manager) to report the stay of a foreigner (non-Thai national) in his/her property. All foreigners staying in Thailand and their hosts should be aware of this since Immigration enforces strictly and demands the return slip of the TM.30 form when going to the Immigration office for a service, such as the 90-day reporting and visa extension
Here is a sample of the return slip of the TM.30 form. It is needed when going to the Immigration office for a service, such as the 90-day reporting and visa extension.