Property tax rate in Japan, much like the US, depends on the location. But you're looking at around 1.1-1.4% a year based on how much it's appraised to be. So the rate itself is very similar to the US national average, but the home will likely never be valued at what a US is, so your annual tax bill would be significantly less (especially if you're buying a home for $10K). As for other costs, like electric/insurance, that's something I couldn't help you out on as it's pretty specific per location and property.