FY2026 "Tokyo Eco Builders" and "Tokyo Eco Builders Award" Applications Now Open!

To realize a "Zero Emission Tokyo by 2050," the Tokyo Metropolitan Government is promoting various measures to improve energy efficiency and decarbonize buildings, which account for over 70% of CO2 emissions in the metropolis. As a measure primarily targeting new housing, the government implements the "Building Environmental Report System," which mandates that major house manufacturers and others ensure insulation and energy-saving performance and install solar power generation equipment.

We are now accepting applications for "Tokyo Eco Builders," which includes not only businesses subject to the reporting system but also those working to popularize new homes with high environmental performance. By collaborating with these businesses to disseminate information, we will expand opportunities to promote high-environmental-performance housing.

Furthermore, businesses implementing particularly effective initiatives will be presented with the "Tokyo Eco Builders Award: Leading Company Prize." We will promote these companies to Tokyo residents through tie-ups with public awareness content produced by the Metropolitan Government.

We look forward to receiving applications from businesses for the Tokyo Eco Builders program and the Tokyo Eco Builders Award to promote your company and your high-environmental-performance housing.

■ Tokyo Eco Builders

Registration Requirements

① Must have a track record of supplying new buildings with a total floor area of less than 2,000㎡ (hereinafter referred to as "target properties") for which a building confirmation certificate was issued in Tokyo between April 2025 and the end of March 2026.

② The target properties must comply with the standards stipulated by the Building Environmental Report System.

※ For businesses not subject to the system, compliance is only required for insulation, energy-saving performance standards, and renewable energy installation standards.

■ Tokyo Eco Builders Award: Leading Company Prize

We will recognize businesses registered as "Tokyo Eco Builders" that are implementing effective initiatives toward the decarbonization of buildings.

Category	Number of Awarded Companies
① Comprehensive ② Condominium/Rental ③ Regional Builder	Top 3 companies in each category (① and ② are divided into two groups based on building supply scale*)

※ Two groups: Total floor area of target properties is 20,000㎡ or more, and less than 20,000㎡.

■ Schedule

Application Period	April 1, 2026 – September 30, 2026
Decision of Registered Businesses	January 2027 – February 2027 (tentative)
Award Ceremony, etc.	February 2027 – March 2027 (tentative)

■ URL

Please visit the Bureau of Environment website for implementation guidelines, manuals, forms, etc.

https://www.kankyo.metro.tokyo.lg.jp/climate/solar_portal/ecoaward/