So you are ready to be king of your own castle in Japan. Adios to the days when you, a mere rent-paying tenant of a grotty apartment, worried about landlords taking you to the cleaners for spilling tea on the carpet or making minuscule holes in the walls to pin up framed pics.

Proud homeowners can drill holes willy-nilly and spill coffee or beer to their hearts' content! Of course, there are other sound reasons for owning your own property, too — that warm sense of "owning," the often poor condition of rental properties, freedom to park a car, freedom from the invidious "key money" system here . . . and the low interest rates in Japan that almost always ensure that your monthly mortgage payments will be lower than your rent.

But how to go about getting a mortgage, whether for a new or preowned place in the sun?