The world’s richest real estate magnate – worth £24bn with 100 homes in one city Posted on February 13, 2026 By realejuicey The billionaire has spent about ten years buying about 100 properties in downtown Detroit for about £4.2 billion. Related posts: Tallest Building in Western US to be Built by 100% Minority Group’s $1.2B Development After Unanimous Selection by LA City Council Billionaire oil magnate Bill Koch lists longtime 52-acre Aspen estate for $125M We own $1.8 million worth of real estate free and clear – should I keep working or retire with a paid-off home in a high-cost city? See also What To Know About Vertical Integration In Real Estate Investing