I analyze a real estate agency's proprietary dataset containing tens of thousands of housing sale and rental transactions in Central London during the 2006–2012 period. I isolate 1,922 properties that were both sold and rented out within six months and measure their rent‐price ratios. I find that rent‐price ratios are lower for bigger and more central units. These stylized facts are consistent with the user cost formula and reflect differences in maintenance costs, vacancy rates, growth expectations and risk premia.