A couple signs a compromise for a T3 in Rennes, convinced they have negotiated the price. Three months later, the energy performance diagnosis (DPE) classifies the property as F, the insulation work exceeds the planned budget, and the bank revises its conditions.
This scenario is frequently encountered since energy constraints weigh on every transaction. Successfully completing a real estate project in 2026 requires mastering parameters that go far beyond the question of price per square meter.
DPE and energy renovation: the filter that changes everything in real estate purchase
Before even discussing budget or location, it is the DPE that determines the feasibility of a project. A property classified as F or G can no longer be rented out without renovations, and banks now include the cost of energy renovation in their financing analysis. This is not just an administrative detail: the DPE determines the real value of the property and its ability to be resold.
In co-ownership, the situation becomes more complicated. Multi-year work plans (PPT) require co-ownerships to schedule collective renovations. If you buy a unit in a building that has not yet voted on its PPT, you expose yourself to unexpected funding calls in the following years. Checking the status of the PPT and the minutes of the general assembly before signing is as strategic as checking the roof of a house.
For those looking to cross-reference market data and regulatory constraints before diving in, the zenetdeco fr real estate site gathers useful resources on these topics.
First-time buyers in 2026: dominant profile and implications for negotiation
According to an analysis reported by Century 21, first-time buyers represent 44.6% of transactions in the recent period, compared to 38.7% for second-time buyers. This category keeps the market balanced.
This resurgence has concrete effects on the ground. Competition focuses on medium-sized properties (T2, T3) within accessible budgets. Negotiation margins are shrinking in these segments, while they remain more open for larger spaces or properties requiring heavy work.
What it changes for a buyer
A financing file completed before the first visit becomes a decisive advantage. Sellers, often advised by their agent, prefer offers with a bank principle agreement. Waiting to contact your bank until you have found the property means losing several weeks and risking being outbid.
For sellers, targeting first-time buyers requires reassuring them about charges, the DPE, and the state of the co-ownership. A complete sales file (up-to-date diagnostics, minutes of the general assembly, details of charges) accelerates the buying decision and reduces the chances of compromise breakdowns.
Real estate credit: granting standards and real maneuvering margin
The standards of the High Council for Financial Stability (HCSF) remain in place: debt ratio capped at 35% of net income, maximum duration of 25 years (27 years for new builds with deferred payments). These rules, often cited, are rarely put into perspective with what is happening on the ground.
The flexibility margin granted to banks (the possibility to deviate for some files) primarily benefits first-time buyers purchasing their primary residence. Feedback varies on this point depending on the institutions, but it is noted that profiles with a personal contribution representing at least part of the additional costs more easily obtain these exemptions.
Cost items that buyers underestimate
- Notary fees in the old property represent a significant part of the total budget, much higher than in new builds. Not including them from the outset in the borrowing capacity calculation skews the entire financial projection.
- The cost of bringing energy standards up to code, especially for properties classified E or below, can radically alter the profitability of a rental investment.
- Rising co-ownership charges, linked to collective renovation plans, weigh on the actual monthly budget and must be anticipated before signing.
New or old: arbitrate according to project timeline
The new property market is regaining some attractiveness among first-time buyers, particularly due to reduced notary fees and builder guarantees. Recent data shows a resurgence of interest, even though new builds are going through a phase of doubt with declining construction volumes.
The old property, on the other hand, offers often lower prices per square meter and a wider choice of locations. The classic trap remains the underestimation of renovation costs. Stéphane Desquartiers, a real estate expert, emphasizes that the first mistake buyers make is underestimating the cost and complexity of renovations.
Quick arbitration grid
- If the project needs to be completed in less than six months and the renovation budget is limited, new builds with quick delivery (available stock) simplify the timeline.
- If you have time and the ability to manage a construction site, old properties with renovations allow for price negotiation and property customization.
- For a rental investment, checking the DPE class before any offer prevents ending up with a property prohibited from rental without prior renovation.
Between energy constraints, the massive return of first-time buyers, and strict banking standards, every decision made before the project (financing, diagnosis, choice of new or old) directly impacts the final outcome. Preparing your financing file before visiting, demanding a recent DPE, reading the co-ownership minutes: these operational reflexes make the difference between a forced purchase and a controlled purchase.
