Subsidy programs are run by Japanese municipalities, and their pages are in Japanese. Most require residency or registration in the town.
Mirai Eco Housing 2026 Program (Renovation)RenovationMax ¥1M
Nationwide・FY2026・Applications accepted until December 31, 2026 (reservations until November 16; ends when budget limit reached)
Fixed subsidy for energy-saving renovations such as insulation upgrades. Up to ¥400K–¥1M per unit (depending on construction date and scope of work)
Conditions: In principle, houses built on or before December 31, 2016. Applications filed by registered contractors and rebated to owners. Cannot be combined with other subsidies using national funds
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Existing Housing Insulation Renovation Support ProjectRenovationMax ¥1.2M33%
Nationwide・FY2026
1/3 for insulation renovation of existing housing (total insulation or living room only). Detached: cap ¥1.2M; multi-unit: ¥150K per unit
Conditions: Homeowners, etc. Total insulation requires 15%+ heating/cooling energy reduction. FY2026–2028 project
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Decarbonization Renovation Acceleration Project for Commercial Buildings (Decarbonized Building Renovation)RenovationMax ¥1B
Nationwide・FY2026・June 4, 2026 – November 30, 2026
1/2–1/3 for renovation of existing commercial buildings (schools, hotels, etc.) with insulated windows, insulation, high-efficiency HVAC, LED, etc. Cap ¥1B
Conditions: Requires 30% (hotels, restaurants, etc.) or 40% (offices, schools, etc.) energy savings by use. Minimum ¥2M. Ends when budget exhausted
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Akiya Countermeasures Model Project (Hard Infrastructure)Renovation33%
Nationwide・FY2026・April 20, 2026 – May 20, 2026
Direct national subsidy for high-model akiya countermeasures by NPOs/private businesses. 1/3 of renovation costs, 2/5 of demolition costs
Conditions: Must be selected through MLIT proposal call (requires model nature in renovation/demolition technology, methods, construction processes, etc.). Project runs through FY2026
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Comprehensive vacant house countermeasures program / Vacant house revitalization promotion program (utilization)Renovation67%
Nationwide・FY2026・Set by each municipality
Subsidy for renovating vacant houses for community revitalization use of 10+ years: national 1/3, municipality 1/3 (owner bears 1/3)
Conditions: Apply via municipality (only municipalities with vacant house countermeasure plans that have established subsidy systems under this program). Actual rate and cap depend on municipal system
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CO2 Reduction Renovation Support Project for AkiyaRenovationMax ¥10M33%
Nationwide・FY2026
1/3 for CO2 reduction through high-efficiency equipment when renovating akiya into commercial facilities. Cap ¥10M
Conditions: Local governments, private businesses, organizations, etc. Requires specified CO2 reduction and operational improvement measures
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ZEB and CO2 Reduction Promotion Acceleration Project for Buildings (ZEB Conversion of Existing Buildings)Renovation
Nationwide・FY2026
1/3–2/3 subsidy for ZEB conversion renovation of existing commercial buildings, based on floor area, use, and ZEB rank (cap ¥300M–¥500M)
Conditions: Private businesses: existing buildings <2,000㎡, must achieve ZEB or Nearly ZEB. Schools, hotels, etc. (non-office): 2/3 or 1/2
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Pre-school Education and Childcare Facility Development Grant (Nursery School, etc. Development)Renovation75%
Nationwide・FY2026・Set by each municipality
Subsidy for new construction, repair, renovation, etc. of private nursery schools and certified centers for early childhood education and care. National 1/2, municipality 1/4 (operator bears 1/4)
Conditions: Applications via municipality (based on municipal development plan). Operators: social welfare corporations, school corporations, or those approved by municipality. Increased to 2/3 national for waiting list and depopulation countermeasures
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Advanced Window Renovation 2026 ProgramRenovationMax ¥1M
Nationwide・FY2026・Applications accepted until December 31, 2026 (reservations until November 16; ends when budget limit reached)
Fixed subsidy for insulated window upgrades including interior windows, exterior window replacement, and glass replacement. Up to ¥1M per residential unit; up to ¥10M per non-residential building
Conditions: Work must use registered products. Applications filed by registered contractors (window renovation contractors). Non-residential: up to ¥1M for floor area ≤240㎡; up to ¥10M for >240㎡
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Agricultural, Mountain and Fishing Village Promotion Grant (Farm Stay Type - Facility Development)RenovationMax ¥25M50%
Nationwide・FY2026・January 23, 2026 – February 12, 2026 (additional call: June 15, 2026 – July 2, 2026)
1/2 of costs to renovate old farmhouses, closed schools, etc. into lodging/stay facilities. Cap ¥25M (up to ¥50M for idle facility renovation)
Conditions: Implemented by regional councils/core organizations (private companies possible; council organization required). Must provide lodging, dining, and experiences. Municipal idle assets: cap ¥75M
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Comprehensive Childcare Support Program Subsidy (Support for Renovation Costs of Nursery Schools, etc. in Rental Properties)RenovationMax ¥73.2M75%
Nationwide・FY2026・Set by each municipality
Subsidy for renovation costs to open or expand capacity of nursery schools, etc. in rental properties. Standard amount per facility: ¥19.97M–¥73.22M depending on capacity
Conditions: Applications via municipality (implementing body: municipality). National 1/2, municipality 1/4 (operator bears 1/4). Fixed-term lease properties ineligible
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Vacant House Utilization Promotion Support Project (Vacant House Revitalization Support Project)RenovationMax ¥300K50%
Marumori Town, Miyagi・FY2026・Year-round (within budget)
1/2 of akiya renovation costs (max ¥300K). Additional 1/6 (max ¥300K) if using local contractors and local materials
Conditions: Vacant houses unused for 1+ years eligible. Those moving in for residential purposes, etc. Apply before starting work, no tax arrears
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Osaki City Housing Purchase Renovation Immigration Support ProjectRenovationMax ¥500K33%
Osaki City, Miyagi・FY2026・From April 1, 2026 (until budget exhausted)
1/3 of purchased housing renovation costs (detached max ¥500K). Additional 1/6 each (max ¥200K) for multi-child households and local contractors
Conditions: Immigrants from outside Osaki Regional Development Zone & neighboring cities, age 40 or under with spouse. Pre-construction application. Approximately 2 projects accepted
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Tome City Akiya Renovation Project SubsidyRenovationMax ¥500K50%
Tome City, Miyagi・FY2026・Within 1 year of sale or initial lease contract date (until budget exhausted)
1/2 of akiya bank property renovation costs (max ¥500K). Kitchen, bathroom, roof, exterior walls, etc.
Conditions: Property from akiya information bank with completed sale/lease contract. Renovation costs ¥100K+, pre-construction application, 5+ year residence after completion
Program page ↗
Subsidy terms change every fiscal year. Always confirm with the municipality before applying.