What form do I need to fill to change my address with immigration in Thailand, and what does my landlord need to do?

When moving in Thailand, you need to complete the TM30 form to report your change of address. Depending on your local immigration office, a TM28 might also be required, although many offices may not require it. It's essential for your landlord to assist in this process, as they must file the TM30 form, or you may obtain their consent to do it on your own. Typically, you'll need a lease agreement, the landlord's house book, a copy of the landlord's ID, and a copy of your passport. It's also a good idea for your landlord to be present during the filing to answer any questions from immigration.