The cost of a four-room house in Japan can vary greatly depending on factors such as location, size, quality of construction, and other amenities. As of 2021, in urban areas like Tokyo, Osaka, or Yokohama, the average cost of a newly built detached house can range from around 50 million to 200 million yen ($450,000 to $1.8 million USD). On the other hand, in rural areas or less expensive regions, the cost can be significantly lower, ranging from around 20 million to 80 million yen ($180,000 to $720,000 USD). Ultimately, it is best to consult with local real estate agents or websites for more accurate and up-to-date pricing information based on your specific preferences and requirements.
