Can my friend extend her 30-day visa exemption in Patong for another 30 days?

Fernando Raigal First I would say, delete the link. Your friend does not have a visa, so searching for Extensions of Stay on different types of visa does not help at all. As Tod mentioned, he has a 30 day free Visa Exempt Stamp and he can get the Extension of Stay at Patong Immigration. Bring the passport and copies of ID page, Visa Exempt Stamp page from the passport, copy TM 6 departure card, 1 passport picture, the notification of stay (address registration) and 1.900 Thb. You get the application form there to fill in.