Does my friend need a hotel address to extend his visa in Thailand for 30 days?

A friend in Thailand seeking a 30-day visa extension should check if he needs a registered hotel address or if he can use his girlfriend’s home address. The local immigration office's requirements vary; some may require a TM30 form filed by the property owner, while others may not. The TM30 must reflect the current address where he is staying, which may entail a fee.