Real estate investments have always been one of the main investment categories of insurance companies, especially for life insurers. Despite the long-term nature of real estate assets, calculating their duration remains challenging. As a consequence, the policy-makers who are devising the new regulatory regime for European insurers, Solvency II, have decided to adopt very punitive capital requirements for insurance companies holding these investments. In this Market Insight, we contend that the uniform approach to all real estate assets across all jurisdictions that is adopted by Solvency II’s standard model is not justified. We derive a statistically significant duration for residential real estate in multiple European countries. Based on this, we argue that Solvency II should adopt a much more tailored and risk-appropriate approach to capital weightings for real estate investments. Such a change is important because it could re-enable insurance companies to invest in real estate, a crucial ingredient to economic recovery in Europe.