Energy performance certificates and seasonal rentals: understanding the impact of energy-inefficient buildings in 2026

Faced with the climate emergency that is redefining how we live, 2026 marks a turning point for the real estate sector. Landlords, particularly those operating in the tourist rental market, are now at the heart of a major regulatory transformation initiated by the Climate & Resilience Law. The era when energy performance was a secondary criterion is over: it now dictates the very legality of renting out a property. With bans on the most energy-inefficient housing now in effect, it is imperative to grasp the nuances of this new paradigm. This comprehensive report provides an in-depth analysis of the mechanisms of the Energy Performance Certificate (EPC), the crucial deadlines, and the adaptation strategies necessary to safeguard your assets in a context where green value prevails.

• In short: key points to remember 📅 Active Calendar
• : Since 2025, properties rated G are prohibited from being rented, now including furnished tourist accommodations. 📉 Economic Sanctions : Rent freezes strictly apply to energy-inefficient properties (F and G ratings), directly impacting profitability.
• 🔍 Enforceable Energy Performance Certificate (EPC)
• : The EPC is no longer merely informative but legally binding, making the landlord liable to the tenant. 🚧
• Renovation Obligation : Energy-efficient renovations are becoming essential to maintain a property’s viability on the rental market by 2028 (class F).

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Available Financial Assistance : Programs like MaPrimeRénov’ and Energy Savings Certificates (CEE) remain available to offset the cost of bringing properties up to standard. Understanding the EPC and its central role in 2026

The Energy Performance Certificate The Energy Performance Certificate (EPC) can no longer be considered a mere administrative formality, relegated to the back of a file during a transaction. By 2026, it will be the cornerstone of housing policy in France and will act as a true “rental permit.” To fully grasp its impact, one must first understand its new methodology, redesigned to be more reliable and representative of the actual energy performance of buildings.

It is important to note that the EPC calculation is no longer based on energy bills, a method that for a long time skewed the results according to the consumption habits of previous occupants. Now, and generally speaking, the assessment relies on a conventional calculation method that analyzes the building’s physical characteristics: insulation quality, glazing type, heating system, and ventilation. This technical approach allows for a rating from A to G, reflecting primary energy consumption and greenhouse gas emissions.

A crucial aspect of this reform is the “dual threshold” principle. Your home is assigned an energy rating and a climate rating. The final rating is the lower of the two. This means that a well-insulated home heated with heating oil (a major CO2 emitter) could be classified as an energy sieve, despite a reasonable heating bill. This paradigm shift requires homeowners to think holistically: insulation and decarbonizing their heating systems. Furthermore, the enforceability of the Energy Performance Certificate (EPC), in effect for several years now, has transformed landlord-tenant relations. If the information provided in the certificate proves to be incorrect, the tenant has the right to take legal action against the landlord to request compensation, or even a rent reduction. To learn all about the obligations incumbent upon property owners, it is helpful to consult the details on the landlord’s requirements, which strictly govern these procedures. In 2026, transparency is no longer optional; it is a legal obligation that secures the market.

The extension of bans to seasonal rentals For a long time, a form of inequity seemed to exist between long-term rentals (traditional residential leases) and seasonal rentals such as Airbnb or Abritel. Many owners, faced with the constraints on traditional rentals, had chosen to convert their energy-inefficient properties into tourist accommodations to circumvent the rental bans. This “loophole” was definitively closed by lawmakers, concerned about preventing a massive exodus of permanent residents to the tourist housing sector, which would have exacerbated the housing crisis in high-demand areas.

There are a few things you should know about the alignment of regulations. The law clearly establishes that energy efficiency standards apply to all types of housing. By 2026, a tourist renting an apartment for a week has the right to demand accommodation that isn’t energy inefficient, just like a long-term tenant. Rental platforms are now required to verify the compliance of published listings and remove those that don’t meet the required performance standards.

This measure also aims for a direct environmental objective: the reduction of CO2 emissions.The stock of second homes and vacation rentals often consists of older properties, poorly insulated or not insulated at all, and used intensively during holiday periods. Including them in the ban schedule forces a massive renovation of this aging stock. For owners, this means a complete overhaul of their business model. Seasonal rentals can no longer serve as a refuge for properties rated G. To delve deeper into the legal specifics related to this type of property, it is recommended to read the information on the furnished tourist accommodation legislation, which details the current constraints.

https://www.youtube.com/watch?v=L65S8cbQhkY The ban schedule: where do we stand in 2026?

Navigating the dates and deadlines of the Climate & Resilience Law requires careful attention. We are no longer in the announcement or preparation phase; we are now in the implementation phase. By 2026, the axe had already fallen for a significant portion of the French housing stock, and other deadlines were fast approaching. It is essential to place your property on this timeline to anticipate corrective actions.

Since January 1, 2023, the most energy-inefficient homes, classified as G+ (consumption exceeding 450 kWh/m²/year in final energy), have been prohibited from being rented. This first step aimed to eliminate the most critical situations of energy poverty. But the real shock to the market came last year. Since January 1, 2025, all homes classified as G are prohibited from being rented. This affects millions of residences in France. If your property displays this rating on its Energy Performance Certificate (EPC), you are legally prohibited from signing a new lease or listing it on a tourist platform.

This establishes that the concept of “decent” housing now includes its energy performance. A dwelling rated G is considered substandard, just like a dwelling without windows or running water. But the outlook doesn’t end there. Landlords must already prepare for the next major deadline: 2028. By that date, dwellings rated F will be excluded from the rental market. In other words, within two years, all energy-inefficient properties (F and G) will be off the market. Research the current condition of your property. If you are currently rated F, you have a relatively short window of opportunity to plan, finance, and carry out renovations. Waiting is no longer a viable strategy. Here is a clear summary of the deadlines to illustrate the urgency of the situation: 📅 Application Date 🚫 Energy Performance Certificate (EPC) labels prohibited

📝 Consequences for landlords

This constraint also applies to furnished rentals. If you were thinking of offsetting the cost of renovations by raising your nightly rates during peak season, be aware that regulations are vigilant. The competitiveness of your property on the market will depend on its comfort. Tenants are increasingly informed and attentive to energy performance certificates, as they determine their thermal comfort (not too hot in summer, not too cold in winter). To better understand how these constraints interact with your overall income, it is relevant to analyze the tax treatment applied to the LMNP (furnished rental) status, which can offer some optimization opportunities despite the freeze. 💰 Renovation & Green Value

Simulate the financial impact of renovating your energy-inefficient property (Energy Performance Certificate F/G)

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There are a few things you should know about prioritizing work. Insulation is always the first step. It’s often said that “the cheapest energy is the energy you don’t use.” Insulating the attic (30% of heat loss), walls (20-25%), and floors is essential. In apartment buildings, exterior insulation (EWI) is often the most effective solution because it addresses thermal bridges, but it requires a vote at a general meeting, which can slow down the process.

Once the building envelope has been addressed, the heating and hot water system must be tackled. Replacing an old oil or gas boiler with a heat pump, or, in smaller dwellings, with high-performance electric radiators coupled with a thermodynamic water heater, significantly improves the building’s energy performance (greenhouse gas emissions). Mechanical ventilation (MVHR) is the third essential element: insulating a dwelling without ventilation creates building problems (humidity, mold) that will degrade the property and harm the health of its occupants. Is it worth undertaking major renovations? The answer is yes, not only for the right to rent, but also for the “green value.” By 2026, the price difference between an A/B rated property and an F/G rated property had widened considerably in all regions of France. Renovating also means protecting your investment. Furthermore, a renovated property attracts a more discerning clientele and ensures an optimized occupancy rate, as customer reviews regarding thermal comfort (especially during summer heatwaves or winter cold spells) are crucial.

Risks and penalties for non-compliant landlords Some landlords might be tempted to circumvent regulations, for example, by not obtaining an Energy Performance Certificate (EPC), falsifying the listing, or continuing to rent out a prohibited property “under the radar.” By 2026, control mechanisms have been strengthened, and the risks involved are disproportionate to the expected gain. Real estate regulations no longer allow for amateurism or willful negligence. Tenants have powerful legal tools at their disposal. If they find that the property does not meet energy efficiency standards, they can formally demand that the landlord carry out the necessary work. If there is no response or action, the matter can be brought before a judge. The judge has the power to compel the landlord to carry out the work, impose a rent reduction, or even suspend rent payments until the property is brought up to code. Furthermore, damages may be awarded for loss of enjoyment of the property.Regarding seasonal rentals, local councils in high-demand areas and government agencies are conducting more frequent checks, cross-referencing data from online platforms with Energy Performance Certificates (EPCs). A false declaration or the illegal rental of an energy-inefficient property exposes the owner to administrative fines that can reach several thousand euros. It is crucial to have a precise understanding of the tax and legal risks associated with short-term rentals to avoid turning an investment into a financial drain.

Finally, the insurance risk must be mentioned. In the event of a claim, if the expert finds that the property did not meet legal rental standards, the insurer could try to refuse coverage or reduce compensation, arguing that the property should not have been occupied. EPC compliance is therefore essential for the long-term viability of your landlord business.

Aid and support: financing the transition Fortunately, the government does not impose these obligations without offering financial incentives. In 2026, the landscape of renovation grants stabilized, although budget allocations remained subject to strict conditions. The goal is to support homeowners, including landlords, in financing the remaining costs of renovations to mitigate the energy impact on their finances. The flagship program remains MaPrimeRénov’. Available to landlords (subject to income and rental commitment requirements), this grant finances a portion of insulation, heating, or ventilation work. It can often be combined with Energy Savings Certificates (CEE), bonuses paid by energy suppliers. Combining these two forms of assistance can cover a significant portion of the cost, sometimes up to 40% or 50% for comprehensive, high-performance renovations.

There is also the zero-interest Eco-loan (Eco-PTZ), which allows you to borrow up to €50,000 interest-free to finance renovations, repayable over 20 years. This is an essential cash flow tool for homeowners who don’t have immediate access to funds. For renovations in co-owned properties, MaPrimeRénov’ Copropriété simplifies the financing of work on common areas, which are often the most energy-efficient.

To navigate this administrative maze, using a “My Renovation Advisor” has become mandatory for major renovations. This trusted third party guides you through the technical, financial, and administrative aspects. Don’t overlook local aid either: some regions or metropolitan areas supplement national aid to accelerate the energy transition within their territory. Always check with your town hall or the ADIL (Departmental Housing Information Agency) in your department. My property is rated F; can I still rent it out in 2026? Yes, you can still rent out a property rated F in 2026. However, the rent is frozen (no increases are possible), and the ban on renting it out will take effect on January 1, 2028. It is therefore urgent to plan the necessary work now.

Is an Energy Performance Certificate (EPC) mandatory for short-term rentals like Airbnb?

Yes, the regulations have changed to include furnished tourist accommodations. You must be able to provide a valid EPC and meet the energy efficiency standards (no G rating in 2026) to legally rent your property on these platforms.

What are the most cost-effective improvements for improving your EPC rating?Insulating the walls (from the inside or outside) and the attic is often the most impactful action. Replacing a fossil fuel heating system with a heat pump generally results in a significant improvement in the rating. Can I pass on the cost of the work to the rent?

If your property is no longer considered a thermal sieve (class E or better) thanks to the work, you will be able to apply the IRL again and increase the rent when there is a change of tenant or renewal, according to the rent control rules in force in your area.