Changes in the social environment have created issues such as a declining birthrate and aging population, diversifying lifestyles, and natural disasters. The Tosei Group addresses those issues through a wide range of activities including creation of comfortable residences, creation of comfortable working environments, and support for disaster-stricken areas.

For Our Customers

Creation of Comfortable Residences

Barrier-Free Houses

In certain projects in its detached house development business, the Tosei Group provides barrier-free houses by applying a unique design code consisting of ten items, which are based on the concept of "permanent residence." The Group aims to develop houses that are comfortable for young children and the elderly and that are homes where all generations of families can continue to live comfortably.

Product Planning by Women

In its detached house development business, the Tosei Group has launched the "Irodorie," a project featuring product planning by women. Under this project, the Group has been developing products that cater to customer needs. The Group proposes homes that are comfortable for all family members, by focusing attention on the ideas of women, who support family life through household tasks, childcare, and other activities.

Development of Secure Towns

Creation of community spaces

Tosei converted T’s garden Kitakashiwa , an idle company-owned apartment, into a rental condominium for families through value-improving work that made the most of the existing building. With a focus on meeting the needs of the child-bearing generation, it created three community spaces: the Kids Room, in which parents and children can play without worry about inconveniencing the neighbors, the Party Room, where residents can have a good time with friends and relatives through activities such as cooking classes or birthday events, and the Study Room, in which residents can enjoy solitude while studying alone or reading. Through such efforts, it provides spaces that all family members can use to make their lives more comfortable depending on different situations. Starting with the management of applications for rentals in July 2016, Tosei has been engaged in the operation of the condominium.

Kid's Room
Kid's Room
Party Room
Party Room
Study Room
Study Room

Promotion of Community Formation

Tosei held a festival at THE Palms Court Kashiwahatsuishi, which are detached houses it developed, to promote interaction among residents and between residents and people in the neighboring areas. Tosei links between people help build communities, part of its efforts to promote the development of towns that allow customers to be integrated into local communities.

Management of product quality

    • Implementation of evaluations and inspections by third parties

For the THE Palms Yutenji Master Place, a newly constructed condominium, Tosei implements evaluations and inspections through the Japan Constructive Inspect Association, a third party designated by the Minister of Land, Infrastructure and Transport, as well as inspections based on laws and regulations to provide safe and reliable housing to customers.

    • ISO 9001 (quality management system)

Tosei is an ISO 9001-certified company for the planning, design, construction work management and after-sales service (regular inspections) of condominiums, office buildings, commercial buildings and detached houses, and engages in strict quality management in compliance with ISO 9001. Tosei Community Co., Ltd., a subsidiary of Tosei Corporation, is also an ISO 9001-certified entity that undertakes the planning and provision of general management operations for condominiums, office buildings and rental condominiums.

      • Efforts to pursue quality improvements in products in response to customer needs Meetings

As part of quality management, the Tosei Group is in the process of adopting more unique initiatives.

 [Meetings for examining quality improvements]

In conjunction with the construction or renovation of new or existing office buildings and condominiums, among other properties, Tosei conducts detailed checks on specifications and in-depth meetings with the attendance of three parties—the Company, design and construction management companies, and construction companies. It seeks to strengthen collaboration among concerned parties to provide better products while preventing the occurrence of issues.


Tosei manages all processes related to the construction and maintenance of new or existing office buildings or condominiums through three parties—the Company, design and construction management companies, and construction companies—based on Tosei's unique quality control standards, TOSEI-QC-10. Tosei strives to provide customers with safe and reliable products by conducting inspections and particularly rechecking those items that customers cannot oversee.

[Feedback on customer requests for products]

Tosei is moving forward with efforts to plan and design products with better quality by internally sharing feedback on complaints and requests raised by customers during after-sales inspections and their straightforward opinions obtained from personal perspectives and resident questionnaires.

Creation of Comfortable Work Environment

Creation of a Community Space in Office

In its revitalization business, Tosei carries out Value-up construction work, as it seeks to create a working environment where people can work comfortably with spiritual wealth.


For Our Employees

The Tosei Group helps each employee enhance their skills and abilities through the implementation of human resource training programs and the adoption of systems that facilitate personal development and qualification acquisition. To develop a globally-minded group of seasoned professionals, as described in its corporate philosophy, the Group also provides external management school training aimed to develop the next generation of leaders as well as training for employees according to occupational level.

Real estate notary training
Training for mid-career hires

Main training programs

  • Group training for new graduates

    • Training for instructors of new graduates

    • Training for mid-career hires

    • Training for newly assigned junior administrator (one year)

    • Training on management for managers
    • Training at business schools (one year)
    • Real estate notary training

    • Compliance training

    • Mental health training

  • ESG training

Occupational safety and health

Employees are obliged to have a health checkup once a year for health management. In addition, the Health Committee, which is comprised of employees and partner industrial physicians, reviews the general working environment monthly, including the status of the office environment and medical checkups. The results of the reviews are provided to employees as feedback.

Mental healthcare

The Group sends questionnaires and provides training to all employees in relation to mental health care under the guidance of partner industrial physicians. It also moves forward with initiatives to maintain employees’ physical and mental health condition by requiring employees who engage in overtime work that exceeds a certain amount to have an interview with industrial physicians and other professionals. In addition, the Group provides a consultation service for sound mental health in collaboration with external medical institutions. The service provides a contact point for employees and their families through which they can casually request health consultations without worry, either by phone or e-mail.

Efforts to reduce overtime work

To curb employees’ long working hours, the Group is promoting initiatives to reduce overtime work through the adoption of no-overtime-work days, the prohibition of overtime work after 21:00 as a general rule, and the recommendation of morning-oriented workstyles.

Implementation of family workplace visit

The Group has a family workplace visit day every year in the hope that the children of employees can have a better understanding of their parents’ jobs and workplaces. A total of 79 persons from 26 families visited the Company in 2018 and enjoyed the experience of exchanging business cards, attending a stamp-rally in which they visited different workplaces and collected stamps, and creating model housing, among other programs. The event serves as a place of interaction between employees’ families.

Experiencing exchanging business cards with the Company’s officers
Creating model housing

Contributions to Local Communities

Volunteers for cleaning activities

The Group has participated in community volunteer activities since 2009. This year, it took part in the Nishinagisa-Hatsu Tokyo-Satoumi-Aid, a clean-up event held at Kasai Rinkai Park to remove marine debris. It also checked the types of debris collected and measured the total volume to contribute to future surveys for identifying the cause of marine debris. Going forward, the Company will continue to promote environmental conservation activities.

The clean-up
Participants and marine debris collected

The green feather fundraising activity

The activity aims to provide support for a range of programs, such as the maintenance of forests, development of forestry volunteers and provision of forestry and environmental education for children.

Collection boxes for plastic bottle caps

The activity aims to send vaccines to children in developing countries by using profits earned from the sale of plastic bottle caps to recycling companies.

Continuation of activities for supporting areas affected by the Great East Japan Earthquake

Since 2011, the Tosei Group has been engaged in activities for supporting areas affected by the Great East Japan Earthquake. Its recent activities include the organization of dental seminars and painting of rusted playground equipment at nursery centers in the affected areas, as well as support for the opening of food stalls for a festival held at a temporary housing site. These activities were carried out in cooperation with an NPO that is engaged in volunteer activities in the affected areas.