Environmental Certification
Tosei REIT is proactively engaged in obtaining external evaluations and certifications to promote its ESG initiatives.
Target
| Environmental Certifications | Acquisition ratio of environmental certification is 50% on a total floor space basis by 2030, of which, the ratio of eligible green assets is 50%. |
|---|
- Eligible green assets refer to assets satisfying the requirements of green buildings described here.
Acquisition Status of Environmental Certifications
As of November 20, 2025
DBJ Green Building Certification
DBJ Green Building Certification Program was launched by Development Bank of Japan Inc. in April 2011 for the purpose of supporting properties with proper environmental and social awareness.
The program evaluates, certifies and supports properties sought by society and the economy. It performs comprehensive assessment of properties while evaluating various factors ranging from properties' environmental features to owners' communication with stakeholders such as disaster prevention and proper care for surrounding communities, and the evaluation is indicated at five levels (★★★★★ to ★).
For more information on DBJ Green Building Certification, please click here.
BELS
The Building-Housing Energy-efficiency Labeling System is based on the "Evaluation Guidelines for Energy Conservation Performance Indication for Nonresidential Buildings (2013)" established by the Ministry of Land, Infrastructure, Transport and Tourism., It is an evaluation and indication of energy conservation performance, etc. carried out by a third-party organization for all buildings, whether new or existing, and the evaluation is indicated at five levels (★★★★★ to ★).
For more information on BELS, please click here.
What’s New
- November 20, 2025 Notice Concerning Reacquisition of DBJ Green Building Certification (Two of the properties)
- October 21, 2025 Notice Concerning Acquisition and Reacquisition of DBJ Green Building Certification (four of the properties)
- April 25, 2025 Notice Concerning Acquisition and Reacquisition of DBJ Green Building Certification (four of the properties)
- October 15, 2024 Notice Concerning Acquisition of DBJ Green Building Certification（Two of the properties）
- April 25, 2024 Notice Concerning Acquisition of DBJ Green Building Certification（One of the property）
- February 16, 2024 Notice Concerning Reacquisition of DBJ Green Building Certification (Three of the properties)
- October 12, 2023 Notice Concerning Acquisition of DBJ Green Building Certification（Two of the properties）
- April 24, 2023 Notice Concerning Acquisition of DBJ Green Building Certification（Two of the properties）
- November 18, 2022 Notice Concerning Reacquisition of DBJ Green Building Certification（Two of the properties）
- October 21, 2022 Notice Concerning Acquisition of DBJ Green Building Certification (Three of the properties)
- May 02, 2022 Notice Concerning Acquisition of Building-Housing Energy Labeling (BELS) Certification (Nishi Kasai Tosei Building)
- April 27, 2022 Notice Concerning Acquisition of DBJ Green Building Certification (Three of the properties)
| Number of Properties | Total floor area (㎡) | Acquisition ratio (％) | |
|---|---|---|---|
| Properties with environmental certifications | 21 | 125,324.79 | 46.8 |
| Of which, eligible green assets | 13 | 71,134.55 | 56.8 |
- Acquisition ratio is calculated based on total floor area. The total gross floor area of the 63 properties owned as of November 20, 2025 is 268,068.31㎡.
- Properties with multiple certifications are calculated as one property.
Change in environmental certification acquisition
* Figures in parentheses ( ) are the number of properties in the entire portfolio.
| Property No. | Property Name | Property Type | Total floor area (㎡) |
DBJ Green Building Certification | BELS | ||
|---|---|---|---|---|---|---|---|
| Certification Rank | Acquisition Date | Certification Rank | Acquisition Date | ||||
| Rd-03 | Gekkocho Apartment | Residential properties |
1,547.03 | ★★★★ | Oct.2025 | - | - |
| O-02 | KM Shinjuku Building | Offices | 5,240.41 | ★★★ | Oct. 2024 | - | - |
| O-05 | Nishi Kasai Tosei Building | Offices | 4,271.38 | ★★★ | Nov.2025 | ★★★ | Apr. 2022 |
| O-06 | Shin Yokohama Center Building | Offices | 5,809.25 | - | - | ★★★ | Aug. 2015 （FY2013 standard） |
| O-07 | Nishidai NC Building | Offices | 6,214.11 | ★★★ | Nov.2025 | - | - |
| O-11 | NU Kannai Building | Offices | 10,963.91 | ★★★ | Apr. 2025 | - | - |
| O-12 | Higashitotsuka West Building | Offices | 8,758.32 | ★★★ | Apr. 2025 | - | - |
| Rd-01 | T's garden Koenji | Residential properties |
2,445.31 | ★★★ | Oct. 2023 | - | - |
| Rd-09 | SEA SCAPE Chiba Minato | Residential properties |
7,571.58 | ★★★ | Apr. 2025 | - | - |
| Rd-12 | Twin Avenue | Residential properties |
4,563.79 | ★★★ | Oct.2025 | - | - |
| Rd-18 | Rising Place Kawasaki No.2 | Residential properties |
3,697.17 | ★★★ | Apr. 2024 | - | - |
| Rd-23 | T's garden Kitakashiwa No. 3 building | Residential properties |
2,097.50 | ★★★ | Feb. 2024 | - | - |
| Rd-38 | T's garden Koshigaya-Obukuro | Residential properties |
4,276.68 | ★★★ | Apr. 2025 | - | - |
| Rd-43 | T's garden Nishiterao | Residential properties |
9,487.36 | ★★★ | Oct. 2024 | - | - |
| O-03 | Nihonbashi-Hamacho Building | Offices | 4,583.48 | ★★ | Oct.2025 | - | - |
| O-04 | Kannai Tosei Building II | Offices | 9,383.81 | ★★ | Feb. 2024 | - | - |
| O-17 | Chiba-Chuo Tosei Building | Offices | 2,455.39 | ★★ | Oct.2025 | - | - |
| O-01 | Tama Center Tosei Building | Offices | 16,212.96 | ★ | Feb. 2024 | - | - |
| O-13 | Kannai Wise Building | Offices | 4,960.49 | ★ | Apr. 2023 | - | - |
| O-15 | Hachioji Tosei Building | Offices | 4,972.00 | ★ | Apr. 2023 | - | - |
| Rd-14 | Lumiere No.3 | Residential properties |
5,812.86 | ★ | Oct. 2023 | - | - |
| Total | 125,324.79 | - | - | - | - | ||