International audienceThe Société de la Rue Impériale (SRI) is the oldest real estate company in France. With more than 150 years of estate management of « haussmannian » buildings situated in the main street of Lyon, it had a crucial role among real estate companies. From its beginning (1854) to its end (2007), the SRI has constantly placed estate management in the center of its activities. This long run activity contrasts with the ephemeral duration of other real estate companies in the XIXth century. Throughout its existence, the holding of exceptional real estate assets has ensured a rent on which it has based its expansion. It is progressively shifting to a finance-led model in the late 1960s, after a major takeover by the Lazard bank....