Subsidy programs are run by Japanese municipalities, and their pages are in Japanese. Most require residency or registration in the town.
Nagasaki City Child-rearing Housing Support SubsidyPurchase / clearingMax ¥400K20%
Nagasaki City, Nagasaki・FY2026・April 1, 2026–January 29, 2027 (FY2026 applications closed)
1/5 of used home purchase/renovation costs for child-rearing households (up to ¥400K, ¥500K for large families, +¥100K if akiya)
Conditions: Household with children under 18, living area 60㎡+, renovation by city contractor, approval before contract/construction. FY2026 applications closed
Program page ↗
Subsidy terms change every fiscal year. Always confirm with the municipality before applying.