Policy and System for Environmental Initiatives

Policy and Concepts

Tokyo Tatemono Group has formulated the Group Environmental Policy to contribute in building a sustainable society through business activities that consider the environment.

Creating a pleasant city and living with greenery
We will create a rich and comfortable environment for earth and people by utilizing the strength of greenery as much as possible with consideration to biodiversity.
Climate change prevention that leads the community
We will actively implement environmentally-friendly technologies and ideas into our products and services to lead the community in building a low-carbon city.
Resource-saving activities that are kind to the earth
We will strive to reduce the use of resources and environmental impact through all available opportunities and contribute in creating a recycling-oriented society.
Developing employees with high environmental awareness
We will comply with laws related to the environment and educate and raise the awareness of our employees about the environment.

Established January 2011


Tokyo Tatemono Group has built a management system that matches the characteristics of each business, an office buildings business that engages in the construction and management of buildings, and a development business that engages in the development of the Brillia brand and other housing under the Group Environmental Policy. In other businesses and Group companies, business is conducted considering the environment by formulating environmental guidelines for each business based on the Group Environmental Policy.

Environmental Promotion Structure

Environmental Promotion Structure

Environmental Management of Office Buildings

In the business activities of Tokyo Tatemono, the Office Buildings Business that operates and manages office buildings (commercial) uses the most energy. The ratio of energy use makes up 97.0% of Tokyo Tatemono (calculation based on the Energy Conservation Act*). Therefore, reducing the amount of energy used in the Office Buildings Business largely contributes to the reduction of the total amount of energy use at Tokyo Tatemono.
In the Commercial Properties Department, we have formulated an environmental execution plan based on a high awareness of energy conservation with consideration to the issue of climate change and strive daily in energysaving activities. We actively adopt environmental energysaving technologies in the development of new buildings for the purpose of building environmentally-friendly buildings praised by society. In existing buildings, we promote energy savings from an operational perspective in addition to systematically updating energy-saving equipment.
Moreover, in the reduction of energy consumption, we have defined unit consumption based on floor area as an indicator and set 1% unit reduction every year on average over five years as a target in accordance with the Act on the Rational Use of Energy.

  • *
    Act on the Rational Use of Energy

Ratio of Energy Use at Tokyo Tatemono by Business

Ratio of Energy Use at Tokyo Tatemono by Business

Environmental Execution Plan

Field of Initiative Description of Initiative
1.Energy savings through development

When formulating plans for new buildings, we carefully consider the matching, cost, and appeal with the characteristics of a property to incorporate environmental energy-saving technologies in design specifications (rooftop greening, reuse of rain water, visualization of tenant's energy usage, etc.)

CASBEE®*1: Target values for self-assessment of new construction
· Large-scale properties that use urban development systems, etc.: S-rank
· Other than above: A-rank

PAL* Reduction rate - ERR - BEI target values*2*3*4
· If using the Tokyo urban development system: Stage in accordance with the system usage policy

2. Energy savings through renewal

Update of equipment related to energy savings
(Transition to LED lighting, update of equipment to high-efficiency heat pumps, etc.)

3. Energy savings through operational improvements

(1) Manage energy each month by introducing energy management systems
(2) Comprehensively manage the air-conditioning temperature in common areas
(3) Use BEMS*5 at offices that have implemented BEMS
(4) Share information to realize management that leads to maximum design performance
(5) Analyze and review the energy usage status of the previous year
(6) Execute energy diagnostics through external institutions

4. Awareness of environmental investment value and the amount of energy savings Use a construction history management system to aggregate investment value and energy savings every year
5. Cooperation with tenants

(1) Save power in summer and winter seasons
(2) Distribute informational power saving pamphlets
(3) Regularly distribute information about the environment and energy
(4) Hold an energy-saving promotion conference once a year at offices that are part of the total reduction policy

6. Promotion of recycling waste

(1) Adopt recycle and reuse products
(2) Maintain a recycling rate through comprehensive management and the provisions of bins to separate garbage
(3) Consider new recycling methods
(4) Regularly inspect treatment plants
(5) Hold conferences to promote the separation of garbage with tenants

7. Measures to prevent global warming

(1) Reduce the amount of CO2 emissions
(2) Consider power with a low CO2 emissions factor
(3) Proper management and processing of air-conditioning fluorocarbons

  • *1
    CASBEE®: A system to comprehensively evaluate the quality of buildings not limited to just energy savings or the use of building materials that have a
    lower environmental impact but also consider the comfort and view of rooms. Registered trademark of the Institute for Building Environment and Energy Conservation. www.ibec.or.jp/CASBEE/english/
  • *2
    Perimeter Annual Load (PAL)* Reduction rate: Index for the amount of reduction in the thermal load that is possible from the building exterior to the inside of buildings. PAL illustrates the thermal insulation and heat thermal performance. Higher performance is indicated by a higher value.
  • *3
    Energy Reduction Ratio (ERR): Energy reduction rate of all equipment systems. ERR indicates the energy-saving performance of equipment. Higher performance is indicated by a higher value.
  • *4
    Building Energy Index (BEI): Index to evaluate primary energy consumption for five equipment categories -- air conditioning, ventilation, hot water supply, lighting, and elevators. Lower energy consumption in the design is indicated by a lower value.
  • *5
    Building Management System (BEMS): Building energy management system.

Environmental Management in the Residence Business

In the Residential Development Department, we are formulating Environmentally Conscious Housing Guideline that systematized our environmental measures to promote considerations toward the environment and improve the brand value of Brillia. We design individual properties based on these guidelines for residential development and strive to reduce the environmental impact. These guidelines continue to be revised according to social changes and technological advancements.

Brillia Environmentally Conscious Housing Guideline

Three Concepts Underlying All Things

Condominiums are diverse in size, life of the building, and the materials used, which have a large impact on the environment and a wide range of distinct countermeasures. Therefore, we have put in place three concepts to Think Green, Think Lifestyle, and Think Future to incorporate in the entire Brillia series.

  • I Think Green ― Green & Cool residential spaces filled with greenery: Setting up green spaces acts as a heat island countermeasure and brings about a rich natural environment friendly to the ecosystem.
  • II Think Lifestyle ― Introduction of high-efficiency green residential equipment: High-efficiency equipment comfortably saves energy and contributes to disaster prevention in case of an emergency.
  • III Think Future ― Eco Life Cycle Improvement Plan for Energy and Greenery: Resident participation in operation and management as well as community development will continue in a cycle with concepts I and II.

Ratings for Environmental Performance

Level 1 and Level 2 have been set as two levels for environmental performance to objectively judge at what level a condominium satisfies environmental performance.
Each level is equivalent to housing performance evaluation systems and evaluated by acquiring CASBEE® and the Tokyo Green Labeling System for Condominiums.
We also put in place optional specifications for even greater consideration toward the environment.

Tokyo Green Labeling for Condominiums.

Supply Chain Initiatives

The Tokyo Tatemono Group actively incorporates environmentally-friendly technology and ideas into its products and services in every stage of its business activities in accordance with the Group Environmental Policy, and it strives to save resources and use materials that reduce the environmental impact.

Highly Evaluated by the World's Benchmark in Real Estate

Tokyo Tatemono has been highly evaluated by the Global Real Estate Sustainability Benchmark (GRESB)*, which is a benchmark to evaluate efforts in environmental, social, and governance (ESG) performance of real estate centers, with the highest honor of the "Green Star" for two consecutive years. We also earned the high praise of "5 stars" (out of 5 stars) in the GRESB Real Estate Rating that provides a comparative assessment based on a comprehensive score that was introduced in 2016.

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    Global Real Estate Sustainability Benchmark (GRESB): ESG
    benchmark that specializes in real estate established through European superannuation funds and other financing.

Acquisition of DBJ Green Building Certification Certifying Environmental and Social Awareness

Currently six properties from offices to commercial buildings owned and managed by Tokyo Tatemono have acquired the DBJ Green Building Certification and received high praise. The DBJ Green Building Certification is a system established by the Development Bank of Japan to evaluate initiatives for environmental and social awareness of real estates. The certification is ranked* from One Star to Five Stars based on a comprehensive score from five perspectives of environmental performance in the building, comfortability of tenants, risk management, consideration for the surrounding environment and community, and collaboration with stakeholders.
Tokyo Tatemono will continue to respond to social requests related to real estate from its stakeholders, respond to the diversification of tenant's needs, and develop real estate considering the environmental and social impact.

  • *
    Evaluation by rank -- Five Stars: Building with the top class environmental and social awareness in Japan; Four Stars: Buildings with exceptionally high environmental and social awareness; Three Stars: Building with excellent environmental and social awareness; Two Stars: building with high environmental and social awareness; One Star: Building with satisfactory environmental and social awareness

Properties Certified by the DBJ Green Building Certification

Properties Certified by the DBJ Green Building Certification