In just a few years, the Kretz family has grown from a low-key agency founded in France in 2007 in Boulogne-Billancourt to a major player in the luxury real estate market, propelled by television exposure and a well-established family strategy.
For the Kretz family, real estate is as much about storytelling as it is about selling. Long before their media exposure, the family had already laid the foundations of a strong aesthetic and narrative universe. A signature that, over the years, has evolved into a true brand.
The family before the spotlight
It all began with Sandrine and Olivier Kretz, a couple with no background in real estate. She was a teacher who also took on interior design projects, while he worked as a sales director in a telecommunications company. Nothing seemed to predestine them to become figures in luxury real estate. In the late 2000s, while searching for their own home near Paris, in Boulogne-Billancourt, they decided to change direction and launched Kretz & Partners, with a rather bold intuition: to position themselves directly in the high-end segment, without going through intermediate markets. The company initially focused on castles before expanding its portfolio to include private mansions, exceptional apartments, and villas.
At the same time, Sandrine played a key role in international development. Being multilingual, she built a network of foreign clients, including expatriates, investors, and high-net-worth individuals. Kretz & Partners’ reputation was built discreetly, almost confidentially, within a circle where word of mouth carried more weight than visibility.
In the 2010s, a turning point came with the gradual arrival of their four sons – Martin, Valentin, Louis, and Raphaël – into the business. This integration deeply transformed the structure. Each brought different skills: business development, strategy, communication, and digital.
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Featured photo : DR
