In Paris, this elevation makes it possible to gain m² at a good price
And if the raising of buildings made it possible to solve several problems at the same time to make everyone agree? This approach, the Parisian architect Jean-Thomas Finateu has been developing and refining for several years now. With his concept called “Garden for the roof”, he thinks he has found the recipe that would make it possible to multiply the achievements. Because if the desire to raise often exists, the passage to the act often comes up against disagreements or even jealousies in the condominiums. The idea is therefore to find a win-win model that makes it possible to create new surfaces for the owners while providing a service to the rest of the condominium.
This miracle solution notably involves revegetation and improved energy performance. To illustrate the point, focus on one of the latest achievements of the man who likes to present himself as a “Robin of the roofs”, on the side of rue Ramey, in the 18th arrondissement of Paris. In this condominium of about twenty lots, the gable wall on the street side has serious structural problems and must be repaired. Three owner-occupiers wish to carry out an elevation and buy for 300,000 euros from their joint ownership the right to build duplexes and triplexes above their last level, according to the volumes permitted by the local urban plan.
Mutualization of costs
The subtlety brought by Jean-Thomas Finateu consists in converting the rights to build into “obligation of works” of the same amount. In this case, it is a question of reinforcing the wall on the street side, adapting the condominium to the 2012 Thermal Regulations, limiting rainwater discharge and creating vegetation including a small garden on the space. public along the building and which will be made available to local associations. “There are often fears that the elevation may weaken the structure of the building, but in this case, it is the opposite, explains Jean-Thomas Finateu. The metal structure that encloses the walls of the building consolidates everything.”
By working simultaneously for the condominium and for the owners who raise and by being the owner of the umbrella scaffolding which comes to rest on the building, the architect pools and reduces costs. The condominium gains extensive work that has cost it nothing, the district recovers a small public garden and the owners who raise have paid 900,000 euros for raising work and 300,000 euros for joint work to create nearly 300 m² additional. That is a cost of €4,000/m² of living space, not far from a third of the rates in the district. Enough to encourage other vocations in the capital.