The legal age requirement for owning property in Japan is 20 years old, but there are exceptions for minors who inherit property from their parents or grandparents. To obtain a mortgage to buy a house in Japan, borrowers must be at least 20 years old and provide proof of income and creditworthiness. Renting a property in Japan has no legal age requirement, but landlords may have their own rules and preferences. While there is a strong cultural emphasis on owning property in Japan, high housing costs and limited land availability in urban areas have led many young people to delay homeownership or choose to rent instead. Foreign buyers may face additional challenges such as language barriers, cultural differences, and residency requirements. It is important for first-time buyers to do their research and seek advice from professionals before making a purchase.