Can I extend my visa in Chiang Mai using my Koh Phangan address?

The user inquires about the possibility of extending their visa at the Chiang Mai immigration office while using their Koh Phangan address. Comments indicate that a new TM30 registration from the Chiang Mai host is necessary for the extension. Others suggest that handling visa matters while still in Koh Phangan might be simpler. It is also advised that upon moving, new hosts must register the guest within 24 hours. Chiang Mai immigration might require additional paperwork for the extension, and visitors should be aware of the possibility of receiving temporary 'under consideration' stamps.