A real estate project that goes off the rails rarely stems from a poor choice of property. The problem lies upstream, in the structuring of financing, the interpretation of diagnostics, or a lack of knowledge about current granting rules. Since 2025, we have observed a massive return of first-time buyers to the credit market, with more open banking policies than in 2023-2024, but still framed by the standards of the High Council for Financial Stability. This context changes the levers to activate to secure a purchase.
DPE and rental bans: the technical filter before any purchase
Any buyer aiming for a rental investment must integrate the calendar of rental bans related to the DPE. Energy sieves classified as G are already banned from being rented out. Properties classified as F will follow, and then E according to the regulatory schedule from 2026 to 2034.
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A property listed at an attractive price with an F or G label does not represent an opportunity if the cost of energy renovation is not budgeted. We recommend requesting the DPE even before the first visit, not after the compromise.
On this point, cross-referencing available listings on immolink.net with diagnostic data allows for a quick filtration of properties whose rental profitability would be compromised by necessary compliance works.
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For a primary residence, the question arises differently. A poor DPE weighs on the negotiation of the purchase price and opens a lever for discussion that buyers rarely exploit.
Financing file: structure before searching for a property
The production of mortgage credit surged by nearly 30% in 2025 according to data published by several credit observatories. Banks are lending again, but the quality of the file remains the discriminating factor.
Debt ratio and remaining living expenses
The cap of 35% debt ratio, including insurance, has not changed. A file that approaches this limit without a safety margin will be refused or subject to unfavorable conditions. The remaining living expenses matter as much as the debt ratio for granting committees.
First-time buyers, who now represent nearly half of new housing credits, benefit from a more favorable view from banks. Job stability, tenure in the position, and clean banking management over the last three months form the foundation of the file.
Personal contribution and additional costs
The contribution primarily serves to cover notary fees and guarantee fees. A contribution that only covers these costs is acceptable, but a contribution that exceeds this threshold significantly improves the proposed rate conditions.
- Notary fees for older properties: expect about 7 to 8% of the acquisition price, compared to 2 to 3% for new properties
- Guarantee fees (surety or mortgage): variable depending on the organization, to be included from the financing plan
- Bank and brokerage fees: negotiable, but rarely waived – including them in the overall budget avoids unpleasant surprises at signing
Negotiating the purchase price: leveraging local market data
An effective negotiation relies on verified comparables, not on intuition. The DVF database (Demand for Property Values), accessible for free, lists transactions that have actually been concluded. Comparing the listed price of a property with recent sales in the same neighborhood provides a factual argument that sellers and real estate agencies take seriously.
Several elements strengthen the buyer’s position during negotiation:
- An unfavorable DPE justifies a discount corresponding to the estimated cost of energy renovation works
- Diagnostics revealing anomalies (asbestos, lead, electricity) constitute concrete and documented discussion levers
- An extended sales period signals an initially overvalued price, verifiable by the listing history
The margin for negotiation varies greatly depending on the tension of the local market. In relaxed areas, discounts of several percentage points are common. In tense areas, negotiation focuses more on suspensive conditions or timelines.
Search strategy and selecting a real estate agency
Multiplying search channels is not enough if the specifications remain vague. A restricted geographical perimeter and prioritized criteria accelerate decision-making. Defining three non-negotiable criteria (minimum area, proximity to transport, maximum budget) and accepting flexibility on the rest helps avoid paralysis in the face of the offer.
The choice of the real estate agency deserves special attention. An agency that knows the sector has properties available before others and understands the prices practiced. We recommend checking its local seniority, the volume of exclusive mandates it holds, and its responsiveness during the first contact.
Visits and technical checks
An effective visit is not limited to the overall impression. Checking the condition of the joinery, ventilation, electrical compliance, and the quality of insulation through the attic or walls provides a technical reading of the property. These points also feed into the negotiation if works prove necessary.
Systematically photographing the electrical panel, meters, and any signs of moisture is a simple reflex that allows for revisiting these elements later, without emotional pressure.
The success of a real estate project depends on the quality of technical preparation upstream, not on luck. A solid financing file, a rigorous reading of diagnostics, and a negotiation based on verifiable data significantly reduce the risks of unpleasant surprises after signing.