What documents are needed for a 90-day check-in at Thai immigration?

During a first-time 90-day check-in at Thai immigration, it's generally required to present specific documents. One user reported needing the owner's ID, the house book, and the owner's phone number, which is typically needed for the TM30 form. The TM30 must be updated and matched with the address on the immigration report. While requirements can vary by office, it's advisable to comply with requests by immigration officials to ensure a smooth process. Additionally, many expats mentioned options to file TM30 online, facilitating easier reporting for subsequent check-ins.