Buying a property or investing in real estate involves significant sums and requires time over several years. Understanding the mechanisms that influence the profitability of a real estate project helps avoid costly mistakes, especially when regulations change rapidly.
EPC and rental ban: what changes for property owners
Have you noticed the colored letter on a rental listing? It’s the energy performance diagnosis, the EPC. This document ranks each property from A (very efficient) to G (thermal sieve). Since 2025, properties rated G can no longer be rented out. F-rated properties will follow in 2028, and E-rated ones in 2034.
For an investor, this timeline is not just an administrative detail. It determines whether the property can generate rental income or remain vacant.
The calculation of the EPC for properties heated with electricity is set to evolve again in 2027. Some properties could thus change class without renovation work. Be careful, a change in label due to a new calculation method does not mean that the property is actually better insulated. Before buying a property to rent it out, it’s essential to check the applicable class and anticipate upcoming obligations.
Another lesser-known constraint: in areas where rents are regulated, an EPC rating of F or G prohibits charging a rent supplement. This rule applies to leases signed since August 2022. A poorly rated apartment in a major city may therefore yield less than expected, even if it is allowed for rental.
When looking into real estate on Samh Web, these regulatory constraints are among the first criteria to examine before any financial commitment.
Rental profitability: tax traps to anticipate before investing
The profitability of a rental investment is not limited to the rent received each month. The chosen tax regime profoundly alters the actual profit.
Let’s take a simple example. Renting furnished under the LMNP status (non-professional furnished rental) allows for the accounting depreciation of the property and furniture. Each year, a fraction of the property’s value reduces the taxable income. The result: little to no tax on rents for several years.
The trap appears at resale. The deducted depreciations are now reintegrated into the calculation of the capital gains tax, which increases the taxable base when selling the property. An investor who does not anticipate this mechanism may end up with a tax bill much higher than their initial estimates.
Why is this point so often overlooked? Because most profitability simulations focus on annual yield (rents minus expenses, minus taxes). They neglect the exit scenario. Therefore, before signing, it is essential to calculate two things:
- The net yield after tax during the holding period, including management fees, property tax, and any renovation costs.
- The estimated net capital gain at resale, taking into account the reintegrated depreciations and the allowance for holding duration.
- The total cost of the mortgage (interest, borrower insurance, application fees), which impacts the overall profitability of the project.
A rental investment that looks profitable on paper can become mediocre if the exit tax is ignored.
MaPrimeRénov’ and renovation works: what remains fundable
Renovating a property before renting it out or after purchasing it represents a significant expense. Public aids like MaPrimeRénov’ are regularly evolving, and eligibility conditions are tightening.
Eligible works must meet specific energy performance objectives. The scheme now favors extensive renovations, combining several types of work to achieve a class jump on the EPC.
For a landlord, this means that the renovation budget must be considered from the time of purchase. A property rated F with the potential to move to D after extensive renovation remains interesting. A property rated G requiring heavy work without certainty about the final result presents a higher financial risk.
Renovation works to prioritize according to EPC rating
Thermal insulation (attics, walls, floors) generates the most significant performance gains. Replacing the heating system comes next, especially in properties equipped with old electric convectors. Ventilation, often overlooked, also plays a role in the EPC calculation.
Before starting a project, conducting an energy audit helps identify the most effective areas. Insulating attics is among the interventions offering the best return on investment, as heat loss through the roof is one of the most significant in a poorly insulated property.
Real estate purchase: the steps that buyers underestimate
The search for the property and price negotiation capture all the attention. However, two less visible steps deserve particular vigilance.
The first concerns additional costs. Beyond notary fees (which represent a significant portion of the price in older properties), one must account for loan guarantee fees, any agency fees, and the cost of mandatory diagnostics. These amounts, when combined, can alter the feasibility of the project.
The second underestimated step is reading the co-ownership regulations. This document sets the projected charges, usage restrictions (seasonal rentals sometimes prohibited), and works voted or upcoming. A building with a voted renovation but not yet called can cost several thousand euros in the months following the purchase.
- Request the minutes of the last three general assemblies to identify voted works and ongoing disputes.
- Check the mandatory works fund of the co-ownership and its funding level.
- Compare the actual charges of the last two years with the projected budget displayed in the listing.
These checks take a few hours. They prevent surprises that weigh on the project’s profitability for years. A well-prepared real estate purchase relies as much on financial analysis as on a crush for a neighborhood or a space.
