Subsidy programs are run by Japanese municipalities, and their pages are in Japanese. Most require residency or registration in the town.
Housing and Building Seismic Retrofit Program (Residential Seismic Retrofit)SeismicMax ¥1.1M
Nationwide・FY2026・Set by each municipality
Fixed national and local subsidy for residential seismic retrofits. Up to ¥1.15M (¥1.4M in heavy snowfall areas, ¥1.75M in densely built-up districts, etc.)
Conditions: Applications via municipality (indirect subsidy when local government has a subsidy program). Seismic diagnosis: 2/3 from national and local sources
Program page ↗
Housing and Building Seismic Retrofit Program (Private Building Seismic Retrofit)Seismic23%
Nationwide・FY2026・Set by each municipality
23% national and local subsidy for seismic retrofits of buildings used by many people (department stores, etc. ≥1,000㎡). 2/3 for disaster prevention sites such as evacuation shelters
Conditions: Applications via municipality (indirect subsidy when local government has a subsidy program). Energy-saving renovations combined with seismic retrofits also receive 23%
Program page ↗
Existing Building Seismic Retrofit SubsidySeismicMax ¥200K50%
Satte City, Saitama・FY2026
Subsidizes half of seismic retrofit costs for existing buildings (up to ¥200K).
Conditions: Seismic diagnosis completed. Retrofit deemed necessary. City contractor.
Program page ↗
Hidaka City Wooden Housing Seismic Retrofit SubsidySeismicMax ¥600K
Hidaka City, Saitama
Subsidizes seismic retrofit costs (up to ¥600K). Half of costs for city contractors, same for outside contractors
Conditions: Wooden single-family homes or mixed-use housing within city (where commercial floor area is less than half of total floor area)
Program page ↗
Subsidy terms change every fiscal year. Always confirm with the municipality before applying.