Serge Uschkaloff, a tech entrepreneur with nearly 20 years of experience in the Luxembourg property sector, identifies a critical flaw in the market: the lack of reliable data. He argues that discussions about prices or housing shortages overlook this fundamental issue, exacerbated by a micro-market with limited transactions and delayed statistics from official bodies like Statec and the Observatoire de l’habitat. Uschkaloff, known for co-founding Immotop and later developing valuation tools like Estimator Pro, emphasizes that insufficient data hinders accurate property valuation, especially in times of economic uncertainty and a shift from a seller's to a buyer's market, as seen in the 2022-2023 crisis. He also touches on the challenges of off-plan sales and the growing importance of energy performance in property valuation.