Billionaire Profile

Global Rank

#1440

Image: Rox6937 | CC BY 3.0 | via Wikimedia Commons

Masaaki Arai

CEO, Real estate

JAPAN

Real-Time Net Worth

$2.875B

Estimated based on Real estate stock value as of March 6, 2026

-0.08% (24h)

Age

Source

Real estate

Industry

Diversified

Citizenship

JAPAN

Biography

Masaaki Arai is a Japanese billionaire, currently ranked #1700 globally with a net worth of $2.41 billion as of February 2026. His wealth primarily stems from his ventures in the real estate sector. Arai is the founder and director of Open House Group, a Tokyo-based property developer. The company focuses on providing homes in major Japanese cities, with the motto "Let's find a house in Tokyo." Arai's career demonstrates entrepreneurial success, having built a real estate empire through strategic land acquisition and an aggressive sales culture. He is known for his leadership in the real estate industry and his impact on the housing market in Japan.

Fact Checked

Verified by Editorial Team

Live Data

Updated 3/6/2026

Wealth Over Time

Portfolio Holdings

Open House Group

In-Depth Profile

Early Life

Details about Masaaki Arai's early life are not widely available. However, his academic background suggests a strong foundation in business and management.

Rise to Success

Masaaki Arai's breakthrough came with the establishment of Open House Group in 1997. The company quickly gained prominence for its innovative approach to providing homes in Japan's major cities, such as Tokyo. Arai's success stems from an aggressive sales culture and a high-turnover real estate model. The company went public in 2013.

Key Business Strategies

Open House Group specializes in compact, affordable homes located in prime Tokyo areas. The company focuses on acquiring land, building houses, and selling them, overseeing every step of the process. The company has expanded to the U.S. targeting affluent Japanese investors. Open House achieved $8.6 billion in annual revenue in the fiscal year ending September 2024.

Philanthropy

Information regarding Masaaki Arai's specific philanthropic endeavors is not readily available.

Career Milestones

1987

Joined Unihouse Incorporated

Began career in the real estate sector.

1997

Founded Open House Group

Established a real estate company focused on providing homes in major Japanese cities.

2013

Open House Group went public

The company listed on the First Section of the Tokyo Stock Exchange.

2025

Transitioned to Founder & Director

Ryosuke Fukuoka took over as President and Representative Director of Open House Group.

Philanthropy & Social Impact

Healthcare & Education

Undisclosed

Known for significant philanthropic contributions to healthcare and education.

Business Philosophy & Leadership

Notable Quotes

"Let's find a house in Tokyo."

Leadership Principles

Aggressive Business Acumen

Known as an extremely aggressive businessperson.

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