Reducing consumption while preserving the architecture of buildings

Built in the 60s by a disciple of Auguste Perret whose works are listed in the heritage of the 20th century, the buildings reveal a high-quality architecture: the apartments are in a balcony around a beautiful park, the facades on the tracks are pure and smooth, and the whole is largely glazed, which explains the high energy consumption.

The reduction of energy consumption could not be imagined without preserving the architecture of the buildings: the use of innovative techniques (injection of insulation into the air space and the use of airgel mattresses) made it possible to reduce consumption of 40% while respecting the architecture of the facades.

This operation is the largest project of energy renovation in co-ownerships in the Parisian region (excluding programmed operations).

Leading the co-ownership into a consensual project

Through the implementation of a generative, innovative condominium programming process, ReeZOME supports co-owners in a participatory approach, making them stakeholders in the project from the early stages of the energy audit and the patrimonial diagnosis up to operational phases of financial engineering.

In terms of property valuation, the results obtained are very encouraging: the value of the apartments jumped on average by 29% after completion of the works, which confirms the reality of the Green Value. The value of the property is significantly higher than the investment that has been made by each co-owner, without even reasoning financial aid and energy savings.

Adapted support

The operation was supported by the Essonne Department, Ile-de-France Region and ANAH.

ReeZOME http://www.reezome.com conducted this operation as part of a project management assistance (AMO) mission, including global audit, technical design, financial engineering and communication. project, financial arrangement and representation with institutional bodies, support of co-owners during the implementation, management and closing of the operation.

Project management was provided by A & M Architecture http://www.groupe-aetm.com/architecture.html

Sustainable development approach of the project owner

The reduction of energy consumption could not be imagined without preserving the architecture of the buildings: the use of innovative techniques (injection of insulation into the air space and implementation of mattress of aerogels) has allowed to reduce consumption by 40% while respecting the architecture of facades. The renovation was also imagined in a global way by intervening on all the positions of wastage (walls, roofs, ceilings of the cellars, ventilation, sheaths on stages, doors of entries) so that the energetic and environmental gains are striking and real. It was also important for the building owner to significantly improve the winter / summer thermal comfort and to eliminate the high humidity due to the wooded park and ventilation that was non-existent.

Architectural description

The property complex consists of 7 buildings, 38 staircases and 395 dwellings. It is located on a plateau in a beautiful park.