CSR

Once upon a time... the virtuous restructuring of Saint-Fiacre

March 2025 - 5 minutes de lecture

The Marquise de Pompadour did not always live at the Château de Versailles with Louis XV. Before that, at the very beginning of her marriage to Le Normant d'Etioles, she occupied the private mansion on rue Saint-Fiacre in Paris. Now an office building, Saint-Fiacre is undergoing a renaissance, orchestrated with care to minimise the carbon impact of the works. Matthieu Péchard, our technical manager for the office division, explains.

Listed as one of Paris's historic buildings, the Saint-Fiacre complex has undergone a number of renovations. In the early 2000s, its basement was converted into a car park. A godsend at a time when parking in the capital is a real challenge! Matthieu Péchard explains: ‘When the last tenant wanted to leave the building, the question of a complete overhaul arose, because the occupants were not enjoying optimum comfort. However, there was no question of touching the structure - the roof, the shell, the façades or the joinery - which is protected as a Historic Monument.’

2 years to go green and 34 tonnes reused

The project was also supported by Proclus, a company that reused and reconditioned technical components such as electrical panels and air conditioning units. Proclus reconditioned them, giving them a second life. In total, more than 34 tonnes of equipment were reused on this exemplary site.

27 Canal, the architectural signature of Stanislas Fiszer
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The carbon emissions of 43 Paris-New York flights saved

120 tonnes recycled and 86.6 tonnes of CO2 equivalent avoided

And that's not all! The remaining 120 tonnes of materials were meticulously sorted on site into dedicated skips and recycled. Six per cent of the total was even recovered in the form of energy for district heating. ‘This sustainable approach has avoided the emission of 86.6 tonnes of CO2 equivalent, representing 43 round trips by plane between Paris and New York,’ Matthieu Péchard sums up. Gecina is also aiming for BREEAM environmental certification for the Saint-Fiacre building. With this in mind, the development has been designed from the outset to be as efficient as possible in operation, by connecting the building to the networks of the Compagnie Parisienne de Chauffage Urbain (CPCU) and Fraîcheur de Paris, two companies that manage the capital's sustainable and virtuous public heating and cooling services.