Real estate, anywhere, is only a good investment in small bursts of time, and has to be timed right. Holding real estate over the long term is a losing proposition, investment-wise. Much better long-term investments around.
Investing in real-estate in Thailand is probably one of the most risky investments any foreigner can make, read stupid. Buying a condo to live in, well there are arguments to be made for that, though renting still makes much more sense from so many angles. But investing in a condo is stupidity.
IMHO, Thailand, and even places like China, has had its ride on the back of madness in the world economy over the past few decades. Apart from the fact that an almighty bubble that the Chinese are blissfully continuing to carry on blowing up regardless of the world economy is likely to burst soon, with pretty nasty consequences, the world economy has suffered enough trauma to ensure that the old philosophies won't survive, regardless of the investment communities efforts to restart the same madness.
In the end, economies are made by people doing business, not investors/speculators. And they've had enough, as have had consumers. Expect at least a partial return to lower-level consumption of higher quality goods, more prudence in spending and immersing yourself in debt etc. Bad for corporations and countries persuing an unsustainable growth-at-all-costs model, and good for smaller businesses following lower volume/higher quality models.
In short, what I'm trying to get at is that most Eastern economies are based and have had their day on the back of low quality/ high volume /low price models. I doubt whether they have the capability at this stage, or in the near future to adapt to a different model, the populations have not had the type of education to cope with that. So Thailands growth is basically over as well, at least for a decade or more, and property prices will plummet.
Now where's that dubie.