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Can you sell a thermal sieve (class F or G)?

Guide led by Arthur Merlino, founder of BRIVEOReviewed by the Briveo teamUpdated on July 7, 2026

Yes, you are free to sell a thermal sieve rated F or G. No obligation to carry out works falls on the seller. However, for a single-ownership dwelling, you must provide a regulatory energy audit (mandatory since 1 April 2023) and state the energy class and energy costs in the advertisement and the deed.

The reinforced obligations of the seller of a thermal sieve

While the sale is free, it is more tightly framed in order to inform the buyer. Since 1 April 2023, the sale of a single-ownership dwelling rated F or G requires the delivery of a regulatory energy audit, in addition to the EPC. This audit sets out works scenarios enabling the property to reach a better energy class. Apartments in co-ownership are not subject to this audit at the point of sale.

In addition, the property advertisement must display the energy class and the climate class (EPC labels) and, for a property rated F or G, include the statement indicating that it is a dwelling with excessive energy consumption. The estimate of annual energy costs must also appear in the advertisement.

  • Valid EPC required
  • Regulatory energy audit to be handed over from the first viewing (F and G in single ownership)
  • "Dwelling with excessive energy consumption" disclosure in the advertisement
  • Display of the energy and climate labels, and an estimate of annual energy costs

Practical consequences for price and negotiation

An energy-intensive dwelling does sell, but the buyer factors the cost of works into their offer. The energy audit, by quantifying renovation scenarios, often serves as a basis for negotiation. A well-informed seller anticipates this discount by preparing a complete technical file.

Since the rental bans came into force, a thermal sieve that cannot be rented out loses part of its appeal for investors, which can weigh on demand. Conversely, it attracts buyers willing to renovate, possibly assisted by public schemes such as MaPrimeRénov', whose conditions change regularly.

Frequently asked questions

Am I required to carry out works before selling a thermal sieve?

No. No law imposes works on the seller, whatever the EPC class. You sell the property in its current state. Only the information provided to the buyer is reinforced, through the EPC, the energy audit (in single ownership) and the disclosures in the advertisement and the deed.

Is the energy audit mandatory to sell an apartment rated G?

The regulatory energy audit applies to dwellings sold in single ownership (individual houses and entire buildings owned by a single owner). An apartment in co-ownership is not subject to it at the point of sale, but remains concerned by the EPC and the mandatory disclosures.

Can you sell at a higher price by renovating before putting the property up for sale?

A better EPC class generally enhances the value of the property and widens the pool of buyers, in particular investors who will be able to rent it out. It remains to compare the cost of works with the expected price gain: the energy audit helps to weigh this decision.

Read next

Sources
  • Loi n° 2021-1104 du 22 août 2021 (loi Climat et Résilience)
  • Code de la construction et de l'habitation, article L.126-28-1 (audit énergétique)
  • Code de la construction et de l'habitation, article L.126-33 (mentions dans les annonces)
  • Service-Public.fr - Vente immobilière : diagnostics obligatoires
  • ADEME - Audit énergétique réglementaire
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Can you sell an F or G thermal sieve? - Briveo