Ile-de-France facing the dizzying challenge of thermal sieves

Located in Houilles, in the Yvelines, an energy-intensive condominium, made up of apartments with an “F” or even “G” energy label, had planned heavy renovation work before the health crisis – doubling of the facade and waterproofing of the roof. Postponed, they were to be voted on at the general meeting (GA) of the co-owners in May, when gas bills were soaring. The meeting went wrong. “Some co-owners got carried away and, in the face of the violence of the participants, the work was not voted on and the GA was postponed”says the trustee Olivier Safar, also president of the Union of real estate unions (UNITED) of Ile-de-France.

Behind the discord, divergent interests between a majority of owners occupying their homes and a minority of landlords who have rented their property. Nothing obliges the former to do the work, while the latter, if they do not renovate, will no longer be able to rent their apartments from 1^er January 2023, if they are labeled “G” and particularly energy-intensive (with a consumption of more than 450 kilowatt hours per square meter per year). The ban will then concern all properties classified as “G” in 2025, “F” in 2028 and “E” in 2034, as provided for by the Climate and Resilience Law.

“The situation becomes complicated when the condominium refuses major renovations, especially for apartments located under the roof or on the first floor above an unheated porch.underlines Olivier Safar. Work carried out on an individual basis does not necessarily allow you to earn an energy label. »

Paris, by far the most exposed territory

Far from being an exception, this arm wrestling is likely to become commonplace in the coming months and years in Ile-de-France, as the region has thermal sieves. A study carried out by the Paris Region Institute, in partnership with Insee, and published on Thursday October 13, warns that “without energy renovation work nearly one out of two Ile-de-France housing units [sera] soon forbidden to rent ».

Due to its history and its urban characteristics, the capital region concentrates a larger stock of energy-intensive housing than in the other territories of metropolitan France (45% against 40%). The period of completion of housing plays a major role since, before 1974, the year of the first thermal regulations, no standard governed their energy performance. Result: the small surfaces, more numerous in the old stock, are more often energy-intensive, with nearly two-thirds of dwellings of less than 40 square meters labeled “E”, “F” or “G”, against only 16% of properties properties built since 2001.

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