It heavily varies on the price you’re willing to pay.

Cheapish appartments will have a ton of specific clauses, including no foreigners in general. Slightly overpriced ones will be more open, and you won’t have issues finding something above 160000 a month.

This is one of the reason why getting a meh paying job just to come to Japan is playing the immigration game in hard mode.

PS: for those shocked by “no foreigners” clauses, you’ll be interested to know that “girls only”, “no pets”, “no music instrument”, “no smoker” are also pretty common clauses, and you’ll also get refused depending on your employer if they don’t look good enough to the eyes of the owner. Lower tier appartments are a wild ride in general.

Can you exclude renters with children in Japan? Curious how far the delta goes between US protected classes wrt housing law and Japan.

At least part of the reason foreigners are excluded is because of flight risk. That being said low income, low rent places always give problems to renters even in America. In America you have to deal with credit checks, application fees that do the discriminating in a legal way. In Japan the average foreigner is actually renting with no credit check or income verification, and many forgo even attempting to learn the language which can make it hard to follow rules.