What documents do I need for the COVID extension at Thai immigration?

When applying for a COVID extension at Thai immigration, you will need to prepare several documents. It's crucial to have a TM30 form, which is usually filled out by the owner of your Airbnb or accommodation. If you are uncertain, contact your Airbnb host to ensure they will complete this form. Additionally, check if the immigration office requires the 90-day report, as it has been requested by some offices in the past. Be prepared to possibly return to the immigration office in a couple of weeks to finalize the extension process.