Billionaire Profile
Masaaki Arai
Global Rank
#1521

Image: Public domain | via Wikimedia Commons

Masaaki Arai

CEO, Open House Group
JP
Real-Time Net Worth
$2.59B
As of December 2025
Age
60
Source
Real estate
Industry
real-estate
Citizenship
JP

Biography

Masaaki Arai is the founder, president, and director of the Open House Group, a Tokyo-based real estate development and brokerage firm. Born on October 29, 1965, Arai is a prominent figure in the Japanese real estate industry. His source of wealth comes from real estate, and he has built a net worth of $2.59 billion. Open House Group, founded in 1997, focuses on providing homes in major Japanese cities, achieving $8.6 billion in annual revenue in the fiscal year ending September 2024. Arai's career reflects significant achievements in the real estate sector, earning him recognition as one of Japan's wealthiest individuals.

Wealth Over Time

In-Depth Profile

Early Life and Career Beginnings

Masaaki Arai was born on October 29, 1965. His early career included a position at Unihouse Incorporated, which he joined in October 1987. Arai's entrepreneurial journey began in September 1997 when he founded Open House Group.

Rise to Success

Open House Group, under Arai's leadership, has grown to become a major player in the Japanese real estate market. The company went public in 2013. The company has sold over 60,000 homes in the Tokyo metropolitan area. His company focuses on providing homes for people in bigger Japanese cities such as Tokyo, with the motto "Let's find a house in Tokyo.". The business expanded to the U.S., targeting affluent Japanese investors.

Key Business Strategies

Open House Group focuses on acquiring land, constructing homes, and managing sales, overseeing every step of the process. This integrated approach has enabled the company to achieve rapid growth. The company targets first-time homebuyers with annual incomes between 5 million and 10 million yen. Arai's approach to land acquisition and design management has set him apart in the industry.

Philanthropy

Information regarding Masaaki Arai's specific philanthropic activities and amounts could not be found in the search results.

Career Milestones

1987

Joined Unihouse Incorporated

Began his career in the real estate industry.

1997

Founded Open House Group

Established his own real estate development and brokerage firm.

2013

Open House Group went public

The company was listed on the Tokyo Stock Exchange.

2025

Transition to Founder & Director

Shifted role from President & CEO to Founder and Director.

Philanthropy & Social Impact

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Undisclosed

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Business Philosophy & Leadership

Notable Quotes

""Let's find a house in Tokyo.""

Leadership Principles

Aggressive Business Acumen

Arai is described as an aggressive businessperson, compared to Sengoku Daimyo (military lords during the "Warring States" period of Japanese history)

Customer-Centric Approach

Emphasizes giving customers what they want rather than focusing on what builders want to build.

Controversies & Challenges

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