Mansour has been leading PHD since its inception in 1997. As of February 2025, PHD had 30 residential projects and eight mixed-use projects under construction. In 2024, it made $533.9 million in revenues and had $2.4 billion in assets. Its projects include Badya, Palm Hills New Cairo, Hacienda Heneish, Badya University, and The Crown. Mansour is also a shareholder and board member of the Mansour Group, which was founded by his late father Loutfy in 1952. He is also the president and CEO of the ElMansour and ElMaghraby Investment & Development Company. He had a net worth of $1.2 billion as of March 2025.