At the beginning of 2011, La Banque Postale opened its new head office in Paris' central 6tharrondissement, after works lasting more than 2 years. This complex of four buildings - some dating back to 1732 – was entirely restructured according to Bouygues Immobilier's Rehagreen® programme. This site consisting of more than 23,000 m2 of space certified against the HQE® (High Environmental Quality) label now houses the head office, a post office and the mail delivery centre for the 6tharrondissement.
Based on a multi-criteria assessment of the buildings, covering technical, energy, planning, regulatory, commercial and other aspects, the purpose of the Rehagreen® initiative is to implement the rehabilitation scenario which most precisely meets owners' value enhancement objectives for their property assets, while respecting the buildings' architectural heritage at the same time.
The challenge faced by Bouygues Immobilier and the architect firm Chaix & Morel et Associés was an ambitious one - namely to keep most of the existing floors and façades in order to develop a property complex with HQE® (High Environmental Quality) certification. And they were completely successful in this venture since the development has achieved a "very high performance" rating on criteria such as "the building's relation with its immediate environment" and "the worksite's environmental impact."
The former historic site and its four buildings were entirely redesigned in order to accommodate:
- a landscaped area,
- an auditorium,
- reception rooms,
- a staff canteen,
- a mail delivery centre,
- an entirely renovated post office.
Most importantly, the entire worksite aimed for HQE® (High Environmental Quality) certification by:
- managing worksite waste (upstream waste sorting, etc.)
- reducing disturbances from the worksite to a minimum
- installing air conditioning and heating equipment under ground in order to preserve the façades and terrace.
- providing an acoustic trap to reduce the amount of noise heard in the surrounding streets from plant and machinery
- installing photovoltaic panels on the buildings' roofs
As a result of this, the new head office of La Banque Postale consumes 25% less energy than the level set by the RT 2005 thermal regulation.
The most visible part of the site was the renovation of a building dating from the 1970s, which was provided with a new 2,500-m² double-skin ventilated façade, comprised of:
- an initial skin alternating layers of silk-screened and transparent glass,
- and a second skin incorporating movable blinds.
A choice that blends modernity with respect for the requirements of Architectes des Bâtiments de France. Finally, the building on rue de Sèvres has a green roof terrace.
The head office of La Banque Postale is located in the heart of Paris in the 6tharrondissement, at the intersection of several streets - rue de Sèvres, rue de Saint-Romain and rue Saint Jean-Baptiste-de-la-Salle. This historic building, which stands between Luxembourg and Les Invalides, is part of the charm of one of the most visited areas of Paris' Left Bank, neighbouring the districts of Saint-Germain-des-Près, the Sorbonne and the Panthéon
The head office of La Banque Postale is particularly well-served by public transport (metro lines 10 and 13) and is only a stone's throw from Montparnasse main railway station.
La Banque Postale
rue de Sèvres
75006 Paris, France
- Surface area: 23,614 m2 of net floor area
- Number of buildings: 4
- Year of handover: 2011
- Certification: HQE® (High Environmental Quality)
- Architect: Chaix et Morel et Associés