Just a report about process at Chiang Rai Immigration: :
ED-Visa would have been expired 28th October. IO said that there is no possibility to extend the ED Visa within the kingdom.
So ED Visa was cancelled and new application was for 60 days COVID extension.
Immigration asked for copies of rental contract and passport only.
Got stamped in ' under consideration' until 11th November. Officer confirmed that extension will be 60 days.
Costs: the usual THB 1'900,-.
All quite straightforward and surprisingly simple compared to ED-Visa extensions with tons of paperwork.
TLDR : Answer Summary
The report outlines a recent experience at Chiang Rai Immigration regarding the process for extending an ED Visa. The visa was set to expire on October 28th and could not be extended within Thailand. Instead, a new application for a 60-day COVID extension was submitted, requiring only copies of the rental contract and passport. The application was marked as 'under consideration' until November 11th, with a confirmed extension period of 60 days at a cost of THB 1,900. Comparatively, the process was described as straightforward and less complicated than ED Visa extensions, which typically involve more documentation.