Projected DPE & energy audit
Projected DPE & energy audit
Simulate your home's energy rating after renovation and get a regulatory energy audit. Essential before any major project.
Projected DPE (outside the regulatory DDT) and L.126-28-1 energy audit are distinct from the mandatory sale DPE. They help anticipate class improvement after renovation, qualify for renovation loans, or prepare a resale.
Why a projected DPE or energy audit?
- Quantified class improvement after renovation
- Regulatory energy audit (art. L. 126-28-1 of the CCH): mandatory in mainland France when selling a house rated F or G since 1 April 2023, or E since 1 January 2025; mandatory in Guadeloupe, Martinique, French Guiana, Réunion and Mayotte when selling a house rated F or G since 1 July 2024, then E from 1 January 2028; for a flat, not mandatory in a co-ownership building; mandatory only if the whole building belongs to a single owner
- Negotiation argument (or to justify a price drop)
- Opens PTZ renovation and eco-PTZ access
- Certified professionals (RGE for audit, qualified diagnosticians for projected DPE)
Request my projected DPE or audit
Frequently asked questions
- Difference between regulatory DPE, projected DPE and energy audit?
- Regulatory DPE is mandatory for sale (DDT file). Projected DPE simulates class AFTER renovation — no legal value. The regulatory energy audit (art. L. 126-28-1 of the CCH) sets out a step-by-step works pathway towards a high-performance renovation; it is mandatory in mainland France when selling a house rated F or G since 1 April 2023, or E since 1 January 2025; mandatory in Guadeloupe, Martinique, French Guiana, Réunion and Mayotte when selling a house rated F or G since 1 July 2024, then E from 1 January 2028; for a flat, not mandatory in a co-ownership building; mandatory only if the whole building belongs to a single owner.
- How much does each cost?
- Projected DPE: €150-250. Regulatory energy audit: €500-1000. Projected DPE is often included when you launch renovation with a renovation partner.
- Can I use projected DPE to justify a sale price?
- Legally no (no binding value), but it's a very effective sales tool: you show the buyer the post-renovation potential, which justifies either a maintained price or a quick sale.
- Is an energy audit always useful?
- It is mandatory in mainland France when selling a house rated F or G since 1 April 2023, or E since 1 January 2025; mandatory in Guadeloupe, Martinique, French Guiana, Réunion and Mayotte when selling a house rated F or G since 1 July 2024, then E from 1 January 2028; for a flat, not mandatory in a co-ownership building; mandatory only if the whole building belongs to a single owner. Strongly recommended before any major renovation (> €30,000) — it prioritizes actions by cost/benefit ratio.
- How long does an energy audit take?
- Physical visit: 2-4h depending on home size. Report drafting: 5-10 business days (gathering consumption invoices, thermal modeling, action simulation). Total: 1-2 weeks from order to report delivery. Co-ownership audit: add 4-6 weeks for syndicate coordination.
- Is the projected DPE legally enforceable?
- No, that's its main difference vs. the regulatory DPE. Projected DPE is a commercial/preparatory tool (anticipating post-renovation class), with no enforceable value under the Construction Code. If you plan to sell, it is the regulatory energy audit (art. L. 126-28-1 of the CCH) that may be required: it is mandatory in mainland France when selling a house rated F or G since 1 April 2023, or E since 1 January 2025; mandatory in Guadeloupe, Martinique, French Guiana, Réunion and Mayotte when selling a house rated F or G since 1 July 2024, then E from 1 January 2028; for a flat, not mandatory in a co-ownership building; mandatory only if the whole building belongs to a single owner.
- Who can perform a L.126-28-1 energy audit?
- Diagnosticians certified with 'energy audit' mention (ADEME 2022-2023 reference), RGE thermal engineering offices, RGE 'audit' architects. The approved list is on france-renov.gouv.fr. Cost: €500-1,000 depending on complexity. Not to be confused with a simple DPE (€300).
- Can my current DPE be challenged?
- The simplified contestation window for DPEs issued between January 2018 and July 2021 (pre-2021 method obsolete) expired on June 30, 2024. Recourses still available today: mediation with the diagnostician, appeal to the certifying body (COFRAC), or judicial action. Common arguments: surface error, incorrect heating parameters, miscalculated insulation.
- Will banks accept a projected DPE for renovation credit?
- For eco-PTZ and renovation PTZ, banks require a projected DPE or prior energy audit. Projected DPE alone is enough for «global performance» eco-PTZ (DPE class jump). For MaPrimeRénov' full renovation (which requires, from the first step of works, a gain of at least two DPE classes and at least two envelope work items (walls, lower floors, roof, windows)), a prior energy audit is mandatory (projected DPE insufficient).
- Differences between individual and collective DPE?
- Individual DPE: per unit, mandatory for sale/rental, paid by owner (~€150). Collective DPE (co-ownership): for the entire building, mandatory since 2024 for > 200 units, 2025 for > 50 units, 2026 for all. Cost shared via syndicate. Collective DPE serves as basis for individual but does not replace it for sale.