• Japanese landlords are unlikely to secure full market-rate increases for existing ordinary leases through litigation, the analysis finds.
• Higher taxes, inflation and maintenance costs may justify partial increases, but demands for higher returns alone do not justify refusing renewal.
• Tokyo estimates from shortly after 2000 put fixed-term lease discounts at 8–12% for roughly 70-square-meter homes and 15–25% near 100 square meters.
• A renewal fee equivalent to one month’s rent every two years adds approximately 4.17% to effective rent.
• Tenants accepting increases reset the benchmark for future rent adjustments, making subsequent reductions harder to obtain if market rents decline.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Tanaakk K.K. published the original content used to generate this news brief on November 11, 2026, and is solely responsible for the information contained therein.