On 21 October 2026, the yield on the French OAT prime real estate benchmark — the 10-year government bond — crossed the 5% threshold for the first time since July 2002. At the same time, major advisors place the prime yield for offices in the Paris Central Business District between 4.25% and 4.50%. Thus, the most sought-after real estate asset in France now yields less than a 10-year loan to the French state.

For a long time, the data center remained a niche asset. It was reserved for a handful of specialised operators and poorly understood by traditional real estate investors. Artificial intelligence has changed everything. Indeed, training and running AI models requires unprecedented computing capacity. Thus, data center real estate France has become one of the most sought-after segments in European real estate, and France now occupies a leading position.

The French commercial real estate market has been described as sluggish for the past eighteen months. The volumes confirm it: commercial real estate investment reached €6.6bn in the first half of 2026. This represents an apparent 9% increase year-on-year. However, it reflects a 29% decline once the PROUDREED portfolio sale to Blackstone for €2.3bn is stripped out. Behind this headline figure, one fact goes largely unnoticed yet carries far more weight: the composition of demand has changed. In Île-de-France, more than half of transactions were completed with private capital real estate investors, through multi-family offices or managers dedicated to private wealth. These deals focus primarily on Core+ and Value-Add strategies, while institutional investors remain largely inactive.

The ECB's June 2026 rate hike has upended the core assumption driving European real estate markets. As the French 10-year OAT hits its highest level since 2009, the real estate risk premium — already thin — has compressed to a breaking point. When the risk-free rate rises and prime yields stay frozen, a value correction becomes inevitable. The question is no longer if, but where and by how much.