Buying a house in Thailand is not as straight forward as buying other real estate in Thailand such as a condominium. Firstly you would need to register a Thai company, as a foreigner may not own a house in his name. Once your Thai limited company has been registered, than only may the real estate be purchased. Things to consider are Thailand property taxes
Foreigners are generally not allowed to own land in Thailand. even though the land code, since it was first promulgated in 1954, has provided that forigners may own up to one Rai (1,600 square meters)