Investing smart: in these cities, it is better to buy a thermal colander than new housing

Buying a decorated thermal colander and renovating it can be more profitable than an investment in old real estate. Find out in which cities.

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Thermal colanders, these very energy -consuming housing noted E, F or G on the diagnosis of energy performance (DPE), are not necessarily rejecters for real estate buyers. “Some first-time buyers are willing to acquire a thermal colander, synonymous with a discount »entrusts to Capital Guillaume Martinaud, president of the Cooperative of Real estate agencies Orpi. The goods classified G and F sell 7% to 15% cheaper than those rated D, according to the notaries of Greater Paris. So much so that the purchase and then the renovation of a thermal colander can be more profitable than the acquisition of new housing. But it all depends on Local real estate market And the gap between the price of the new and that of the old: a won bet in Levallois-Perret (Hauts-de-Seine) will not necessarily be in Saint-Malo (Ille-et-Vilaine).

The Maslow.immo platform, specialized in rental investment, has studied 115 municipalities with more than 40,000 inhabitants by crossing them with data from the Ecological Transition Agency (ADEME). According to its study, the price per square meter of new residential real estate, the DPE of which is a or b, is more than 1,000 euros higher than to that of thermal colanders E and F in 32 cities. MASLOW.IMMO has not taken into account the classified goods G, which have less interest in rental investors, because they have been prohibited from rental since January 1, 2025, unless you are the subject of heavy energy renovation work.

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Primo-Accentor versus rental investor

If new housing is 15% to 20% more expensive than old goods, it is due to the costs of acquiring land, building materials, VAT and new environmental standards. Thus, in Boulogne-Billancourt, in the Hauts-de-Seine, “New accommodation is worth 11,200 euros per square meter, compared to 9,000 euros for an apartment rated E or F, either A difference of 2,200 euros», Illustrates Pierre-Emmanuel Jus, Deputy Director of Maslow.immo. A first-time buyer, looking for his first main residence in Boulogne, therefore has every interest in giving her sights on a thermal colander. Especially since he has no obligation to renovate it, unlike a rental investor, who will no longer have the right to rent housing F from 2028 and a property from 2034.

But, even for a rental investor, buying and renovating a thermal coland in Boulogne is more interesting than an acquisition in new: “Ademe, among others, assesses the average cost of an energy renovation at 750 euros per square meter. By buying a thermal coland at 9,000 euros per square meter in Boulogne and renovating it for 750 euros per square meter, I spend less than an investment in the new one ”demonstrates Pierre-Emmanuel Jus. A relevant strategy in Ile-de-France, where seven of the 10 cities are located where the price difference between new and thermal colanders is the most important.

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Watch out for the cost of energy renovation

In contrast, to CaenBetter to invest in the new, whose price per square meter is only 96 euros higher than that of classified goods E or F. Especially that, in the case of a rental investment, it is advisable to add to the price of the thermal coach the cost of energy renovation, compulsory to continue to rent after 2028 and 2034, or 750 euros per square meter. Ditto Lillewhere the new square meter is worth 189 euros more than a rated housing E or F. “It is quite counter-intuitive because, as there is little offer in the new in Lille, we would have thought that low competition between promoters would lead to prices very higher than those of the old. This is not the case, probably because old real estate is quite expensive in this city ”Pierre-Emmanuel Jus analysis.