What documents do I need to prove my residence for a retirement visa extension in Thailand?

if the current landlord or hotel seems unable, or reluctant to file a TM30 is it advisable to download the notification, fill it with as much info as you have available and take it unsigned but initialed, to the local immigration office where you have already made contact with copies of any current revised immigration stamps ..purpose not being to get landlord "in trouble" (as you would have already provided them of changes)..but , rather keep your relationship with Immigration authorities current and forthcoming ??

@Colorado ********

Check with the condo management office. They may have the ability to file one for you online.