DDJ Group
DDJ Group is a hospitality, property, and business operations company based in Japan. Originally established as a real estate business, the company has expanded into hospitality operations, restaurant management, technology solutions, and business development support. Today, DDJ works with investors and business owners to transform ideas, properties, and opportunities into successful operating businesses.
Our History
The Diamond Design story began in the early 2000s with Diamond Design Hong Kong Limited, an interior design company founded in Hong Kong. Drawing upon years of experience in design, renovation, and business development, the company expanded into Japan in 2018 through the establishment of Diamond Design Japan.
As the business grew, so did the understanding that many investors possessed strong ideas and valuable assets but lacked the operational resources needed to execute them successfully.
This realization led DDJ to expand beyond real estate into hospitality management, restaurant operations, technology solutions, and turnkey business support.
VALUES & BELIEFS
Our Philosophy
Personal Relationships Over Transactions
Every project is different. We take the time to understand each client’s goals and tailor solutions to their needs.
Flexibility Over Bureaucracy
We remain agile, responsive, and practical, adapting quickly as projects evolve.
Execution Over Theory
Ideas create opportunity. Execution creates results.
Long-Term Partnerships
Our success is measured by the long-term success of the businesses we support.
Our Vision
To become a leading hospitality operator and business development partner in Japan while building a portfolio of exceptional hospitality assets across the country.
Areas We Serve
TOKYOKANAGAWAYOKOHAMAYAMANASHI
With a primary focus on supporting investors and businesses throughout the Greater Tokyo and Kanto regions.
Business Activities
Real Estate
- • Development
- • Sales & Acquisitions
- • Leasing & Brokerage
- • Property & Building Management
- • Renovation
Hospitality
- • Hotel operations and management
- • Hotel development and project planning
Business Establishment & Consulting
- • Business Manager
- • Company formation
- • Operational consulting
Company Information
| COMPANY NAME | Diamond Design Japan Co., Ltd. (DDJ） |
| ADDRESS | Akai Building 5F, 3-11-2 Taihei, Sumida-ku, Tokyo 130-0012, Japan |
| TEL | FAX | 03-6658 8596 | 03-6658 8576 |
| BUSINESS DAYS | Monday – Friday (Closed Saturdays, Sundays, and Public Holidays) |
| 代表者 | チョウ カイ |
| 設立日 | 平成30年7月 |
| 免許登録 | 宅地建物取引業免許 東京都知事（1）第107597号 |