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I would like to explain about this.

These are reference houses.

I think you already understand, the most important is housing loan. Because it is the hardest loan in Japan, and also it is difficult for foreigers.
So If you really want to have your own house in Japan, it is better to do examination of housing loan. If you will do it, you can know the possibility that you have house. 
Everyone who buys a house in Japan always does it. I think it is the same as your country.