Japan's 'Child-Rearing Green Housing Support Programme' — subsidies for energy-efficient new builds and renovations (up to 1,600,000 yen for a new build)
Source material is a Japanese government announcement (in Japanese); this page is a summary.
The 'Child-Rearing Green Housing Support Programme' run by Japan's Ministry of Land, Infrastructure, Transport and Tourism and Ministry of the Environment was a subsidy scheme supporting energy-efficient new homes (up to 1,600,000 yen) and energy-efficiency renovation of existing homes (up to 600,000 yen) for households raising children, young married couples and others. It covered work started on or after 22 November 2024 and grant applications have already closed.
Key facts
| Responsible bodies | Ministry of Land, Infrastructure, Transport and Tourism and Ministry of the Environment (joint programme) |
|---|---|
| Households covered | Households raising children, young married couples and others (GX-oriented new builds are open to all households) |
| New build subsidy | GX-oriented 1,600,000 yen / long-life quality home 800,000 yen / ZEH level 400,000 yen (per home, plus 200,000 yen each where demolition is involved) |
| Renovation subsidy | All 3 types of required work: up to 600,000 yen; 2 of those types: up to 400,000 yen (per home) |
| Start-of-work cut-off | Eligible work started on or after 22 November 2024 |
| Grant application deadline | Until the budget ran out, and no later than 31 December 2025 (application reservations closed on 14 November 2025) |
| Definition of a household raising children | A household with a child (under 18 as at 1 April Reiwa 6) at the time of application |
| Definition of a young married couple household | A married couple at the time of application where one of them is 39 or under as at 1 April Reiwa 6 |
| Current status | Applications closed → succeeded by the 'Mirai Eco Housing 2026 Programme' (work started on or after 28 November 2025) |
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This was an energy-efficient housing subsidy programme run jointly by Japan's Ministry of Land, Infrastructure, Transport and Tourism and Ministry of the Environment. It supported new homes with high energy efficiency performance and energy-efficiency renovation work on existing homes for households raising children, young married couples and others. For new builds the amounts per home were 1,600,000 yen for a GX-oriented home, 800,000 yen for a long-life quality home and 400,000 yen for a ZEH-level home; for renovations the maximum was 600,000 yen depending on the scale of the required work carried out. It covered work started on or after 22 November 2024, and applications for a grant closed no later than 31 December 2025 (earlier if the budget ran out); it has now ended and has been succeeded by the 'Mirai Eco Housing 2026 Programme'.
Background — why this change
It was set up to give broad support for high-performance energy-efficient homes and energy-efficiency renovation of existing homes, aimed at households raising children and others who are particularly exposed to rising energy and other prices, with a view to carbon neutrality by 2050 and the requirement to secure ZEH-level energy efficiency performance in new homes by FY2030. It was run under the FY2024 (Reiwa 6) supplementary budget.
Summaries below are factual notes based on government announcements and primary sources — not evaluations or opinions.
Summaries reflect national-level programs. Municipal (city/ward/town) programs may differ — confirm with the official desk before applying.
FAQ
Can I still apply?
No. Grant application reservations closed on 14 November 2025 and grant applications closed no later than 31 December 2025 (earlier if the budget ran out). Work started on or after 28 November 2025 falls under the successor 'Mirai Eco Housing 2026 Programme'. Check the official site for the latest position.
Can I get it if I do not have children?
GX-oriented new builds are open to all households, but the subsidies for long-life quality homes and ZEH-level homes are for households raising children and young married couple households. Check the detailed conditions on the official site.