Do I need to obtain a residence certificate from my local immigration office to buy a car in Thailand, or can I get it from a different location?

You do it where you are living

It took me about 30 minutes to get the residence certificate at Sri Racha when I lived in Chonburi a few months ago.

Strangely enough my local immigration office will not providecaxresidenceccertificare for this purpose. I have to go to land transport and register and they get the certificate of residence I need. Takes about two weeks. Ask at you local landctransport ifficexas you will have to get the blue book in your name and possibly change the plates. In total, it took 7 weeks to get the blue book for my last car into my name and that was with the help of dealer who sold it to me.

Available only at the same immigration office where your most recent address was filed by TM.30. A night or two in a hotel might do the trick to get a new TM.30 and residence certificate from a new immigration office in another district, though. That’s why the whole thing is bs … but it is what it is.

If your TM30 is in Chonburi then you won't get a residence certificate in Korat.