Can my son extend his 45-day visa in Chiang Mai using my address?

The user inquires about extending their son's 45-day visa in Chiang Mai and whether they can use their address on the extension form along with a TM30 receipt. The comments highlight the need for a TM30 submission for the son, indicating that if the user is renting, the landlord must register him within 24 hours of arrival. If the user owns the condo, they must also register him within the same timeframe and cannot use an existing TM30. Additionally, one comment suggests arranging a hotel booking for the son as an alternative.