What do I need for a 30-day extension at Jomtien Immigration?

To extend your visa for 30 days at Jomtien Immigration, you should apply within the last week of your current visa. Key requirements include having a filled-out TM7 form, a passport photo, your current TM30 form, a copy of your passport's photo page, and a copy of your immigration stamp page. You may also need a residence letter or contract if living in a condo. Ensure to provide two signed copies of all necessary documents. Alternatively, using an agent can expedite the process, often for a fee around 4000 Baht, allowing you to avoid queues and have them handle most requirements.