The Parisian Agency: Why Does the Kretz Family Fascinate the World? The "Family" Business Model: An Anomaly in Luxury Starting from a simple idea in their living room in Boulogne-Billancourt, Olivier and Sandrine Kretz built an empire. With their four sons (Martin, Valentin, Louis, and Raphaël), they transformed luxury real estate into a global show. The series "L'Agence" ( The Parisian Agency ) became a cultural phenomenon, blending the unattainable dream of €50 million properties with the touching closeness of a tight-knit family. In a sector dominated by lone sharks and impersonal franchise networks, the Kretz family bet on emotion. Their strength? Absolute trust. When you entrust the sale of a historic mansion or a château, you're looking for discretion and stability. Working "as a tribe" reassures ultra-high-net-worth clients (UHNWI). Each brother has his role, his skills, but they all share the same name and the same values. It's a corporate brand embodied by human faces. The series highlights new market trends. Luxury is no longer defined solely by gilding and square footage. Experience First: You're no longer buying walls — you're buying a view, a story, a lifestyle. Turnkey Living: International buyers want "move-in ready" — renovated, furnished, decorated. Nature in the City: Terraces, gardens, and rooftops have become the number one criteria post-Covid. The Kretz family understood this before everyone else: they don't sell houses, they sell life scenarios. Luxury Real Estate in 2026: Where Are We Headed? Character Psychology: Why Do We Identify with Them? The series is a hit because it offers universal archetypes. Martin represents the eldest's responsibility, the weight of legacy, and pure ambition. He's the one who must prove himself. Valentin is the creative middle child — the one who dares, who charms, and who takes emotional risks. Louis embodies Gen Z, born with a smartphone, able to grasp new marketing codes in the blink of an eye. And the paren...