Circular Economy
Conservation of Water Resources
Perceptions and Policies on Water Resources
In response to the risk of drought due to climate change and the shortage of water resources due to global population growth, the demand side is required to effectively utilize water resources such as groundwater, rainwater, and recycled wastewater (greywater and reclaimed water) to ensure the stability of water supply.
MIRARTH HOLDINGS Group's environmental policy stipulates that the Group will work to conserve the water environment and reduce its environmental impact as part of its Promotion of Resource Recycling. For office buildings and commercial facilities developed by the Group, we will promote the effective use and appropriate management of water resources from the design stage to reduce water consumption. Also, we are systematically updating facilities with water-saving equipment that contributes to reducing environmental impact in renovation projects.
Targets and Achievements
Water Consumption Reduction Targets
In real estate development and renovation projects, we will promote the introduction and switchover of water-saving devices, etc. In addition, we will improve the rules and regulations of the "Design Standards" and "Quality Manual."
Actual Water Consumption
| Item | Unit | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|---|
| Actual Water Consumption | ㎥ | 57,359 | 50,769 | 36,658 | 44,105 |
| Water usage per unit | ㎥/㎡ | 0.418 | 0.318 | 0.262 | 0.395 |
| Applicable total floor area | 1,000 m² | 137 | 160 | 140 | 112 |
- * The scope of calculation covers MIRARTH HOLDINGS and consolidated subsidiaries.
- * For water usage figures from fiscal year 2022 onwards, the calculation criteria have been revised and the figures have been calculated accordingly.
Waste Reduction
Perceptions and Policies on Waste Reduction
With the manifestation of global resource constraints and the increasing frequency and severity of disasters, the situation surrounding waste disposal and recycling is changing dramatically. We recognize the need for companies that generate waste to reduce emissions and properly manage waste disposal.
MIRARTH HOLDINGS Group has established its commitment to reducing environmental impact and contributing to the formation of a "circular society" by promoting the 3Rs (Reduce, Reuse, Recycle) in Environmental Policy. Furthermore, at every stage of building design, construction, operation management, and demolition in our group's business activities, we will thoroughly separate recyclable waste and reduce waste emissions.
Targets and Achievements
Waste Emission Reduction Targets
Regarding waste emissions, we will strive to reduce waste emissions per unit of production from the previous year by promoting the 3Rs (reduce, reuse, recycle).
Actual Waste Emissions
| Item | Unit | FY2022 | FY2023 | FY2024 | FY2025 |
|---|---|---|---|---|---|
| Recyclable waste emissions | t | 120 | 525 | 403 | 358 |
| Actual Waste Emissions | t | 1,524 | 2,110 | 1,943 | 951 |
| Waste emission intensity | kg/㎡ | 16.1 | 15.9 | 19.9 | 14.9 |
| Applicable total floor area | 1,000 m² | 95 | 133 | 98 | 64 |
- * The scope of calculation covers MIRARTH HOLDINGS and consolidated subsidiaries.
- * The figures for waste generation from fiscal year 2022 onwards have been calculated based on revised calculation standards.
- * The figures for fiscal year 2025 are provisional and may change.
Closed-Loop Resource Recycling
Takara Leben, SMFL Mirai Partners Co., Ltd., Ichiken Co., Ltd., Tokyo Steel Co., Ltd., and MM Building Materials Co., Ltd. agreed in March 2026 on a circular scheme called the "Closed-loop Resource Initiative" in which iron scrap generated from demolition of existing buildings is reused as raw material for the hotel's new construction in the reconstruction project "HOTEL LEBEN PLACE KAGOSHIMA AIRPORT" ongoing in Kirishima City, Kagoshima Prefecture.
In this initiative, under the "HOTEL LEBEN PLACE KAGOSHIMA AIRPORT" project, jointly promoted by SMFL Mirai Partners and Takara Leben, we have established a closed-loop system that recycles iron scrap generated from demolition work during rebuilding domestically and utilizes it as new building materials within the same project.
Currently, a portion of the iron scrap generated from domestic real estate demolition projects is being exported overseas without proper management or traceability, posing a challenge to the entire construction industry. Through collaboration with relevant companies, we have visualized the entire process from generation to reuse and implemented a fully contained resource recycling scheme in Japan. Moving forward, we will continue to deepen our collaboration with relevant companies, conducting verification and improvements through this project, with the aim of advancing and standardizing resource recycling in the construction industry.
- * Closed-loop resource system: A circular system that continuously recycles and utilizes resources as materials within the lifecycle of a specific project or product, without discarding them.
Recycling Umbrellas
Our Group collects plastic umbrellas left in the company's umbrella stands and donates them to MONDO DESIGN co., ltd’s "Umbrella Recycling Program." Under this program, the plastic parts of the collected umbrellas are upcycled into products under MONDO DESIGN's brand, PLASTICITY. The purchase price of the plastic umbrella materials will be donated to "greenbird," a certified NPO that conducts community development through cleanup activities in Japan and around the world, and will be used for purchasing tongs to pick up trash and for operating expenses for the teams to clean up cities.
Donation of Office Supplies
MIRARTH Architect (formerly Leben Home Build) and Takara Leben Realnet donated office supplies such as clear files, binders, and calendars, which were left unused for years at the companies, to “Second Life,” a program operated by the NPO Good Life. The donated office supplies will be reused both domestically and internationally, and vaccines for two people will be donated for every cardboard box of donated office supplies.