Buying a property, financing renovation work, choosing between renting and rental investment: each real estate project relies on technical decisions made in a rapidly changing regulatory context. Knowing where to find reliable information at the right time helps avoid costly mistakes regarding financing, energy diagnostics, or public aid.
DPE coefficient and energy classification: what changes for a purchase or rental
Before discussing budget or financing, a technical point deserves your attention if you are buying or selling an electrically heated property. Since January 1, 2026, the method for calculating the DPE has been modified by the decree of August 13, 2025, published in the Official Journal on August 26, 2025.
The conversion coefficient for electricity has changed from 2.3 to 1.9. In practice, some electrically heated properties may see their energy classification improve without any work. An apartment rated F could move to E, which changes the landlord’s obligations regarding rental and the perceived value by a buyer.
Why check this point as a priority? Because an unfavorable DPE directly impacts the sale price and access to the rental market. Before signing a preliminary agreement or publishing a rental ad, request a new DPE if the previous one was done before January 1, 2026. Gaining a letter can represent several thousand euros on the sale price.
To cross-reference this information with practical sheets on buying, selling, or rental management, the resources from the Pratique Immo site cover these topics in a concise and regularly updated manner.
Mortgage rates in 2026: compare before committing
Financing remains the cornerstone of any real estate project. After a period of relaxation in 2025, rates have started to rise again. According to data from the Banque de France reported by Meilleurtaux on September 29, 2026, the average rate for new housing loans rose from 3.09% in July 2025 to 3.30% in July 2026 (excluding renegotiations).
This increase has three direct consequences for you:
- Borrowing capacity decreases at the same monthly payment. A quarter-point increase in the rate significantly reduces the amount the bank is willing to lend, which forces a review of the budget or personal contribution.
- The timing of your application matters. Submitting a complete application quickly allows you to lock in a rate before a potential further increase. Prepare your bank statements, pay slips, and proof of contribution in advance.
- Borrower insurance becomes a cost-saving lever. The Lemoine law allows you to change borrower insurance at any time. Renegotiating your borrower insurance can offset part of the rate increase.
Simulators and brokers: two complementary tools
Online simulators (offered by banks or platforms like Meilleurtaux or CAFPI) provide a first estimate of your borrowing capacity. They take into account your income, expenses, and the desired loan duration.
A broker, on the other hand, negotiates the conditions with several institutions. Their interest is maximized when your profile deviates from the norm: variable income, low contribution, purchase in a tight area. The broker knows the internal criteria of each bank, which a simulator cannot incorporate.
MaPrimeRénov’ after September 2026: check the aids before signing a quote
Energy renovation is an integral part of a real estate project, whether you are buying a property to renovate or preparing a home for rental. The rules of MaPrimeRénov’ have changed significantly.
Since September 1, 2026, the aids have been refocused. Decree No. 2026-822 of August 25, 2026, specifies that the determining date for eligibility is the date of application submission, not the date of signing the quote. If you sign a quote in August but submit the application in September, the new conditions apply.
Check eligibility in three steps
Are you considering insulation work, changing heating systems, or extensive renovations? Here’s how to proceed:
- Consult the official ANAH website to check income ceilings and the types of work still eligible after September 1, 2026.
- Have an energy audit conducted by a certified professional. This audit is distinct from the DPE and conditions access to aids for extensive renovations.
- Submit your complete application before starting the work. Incomplete or late applications are the primary cause of refusals by ANAH.
A well-renovated property rents better, sells for a higher price, and reduces expenses. Energy renovation is no longer a bonus; it is a financial parameter of the project.
Notary, diagnostics, and preliminary agreements: often underestimated points of vigilance
The notary is involved several times in a real estate purchase. Their role is not limited to signing the authentic deed. They verify the legal compliance of the property, the title of ownership, easements, and any mortgages.
Mandatory real estate diagnostics (DPE, asbestos, lead, electricity, gas, termites depending on the area) must be provided by the seller before signing the preliminary sale agreement. A missing or expired diagnostic can delay the sale by several weeks.
Before signing a preliminary agreement, check that the suspensive clause regarding the loan adequately protects you. It should mention the borrowed amount, the maximum accepted rate, and the loan duration. If the bank refuses financing under these conditions, you will get your deposit back.
The amount of notary fees represents a significant part of the overall budget. In older properties, they are proportionally higher than in new ones. Include them in your financing plan calculation to avoid a discrepancy between the displayed price and the actual cost of the transaction.
Every real estate project combines financing, regulation, and timing. The rules evolve quickly, as shown by the changes to the DPE and MaPrimeRénov’ in 2026. Checking the conditions in effect at the time you act, rather than when you start thinking about it, remains the most profitable reflex.
