Comparing a purchase in the old market, a new program, and a VEFA within the same budget does not yield the same result depending on the borrower’s profile, the interest rate level, and the DPE label of the targeted property. The real estate project is not just a succession of administrative steps: it is primarily a financial arbitration whose parameters change every quarter.
Old, new, and VEFA: how the DPE changes the actual purchase price
Competing guides rarely address the concrete impact of the energy performance diagnosis on the overall budget. The DPE label is, however, described as a “peace judge” by several recent market analyses: it significantly influences the displayed price, the sales timelines, and the negotiation margin.
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A property rated F or G in the old market is easier to negotiate downwards than a property rated C or D, but the cost of energy renovations often cancels out this apparent advantage. In contrast, a new or VEFA property inherently displays a high-performance label, which eliminates this expense item.
| Criteria | Old (D-G label) | New delivered | VEFA (off-plan purchase) |
|---|---|---|---|
| Displayed price per m² | Lower, but variable depending on the DPE | Higher, includes high-performance DPE | Comparable to new, staggered payment |
| Energy renovations | Often necessary (insulation, heating) | No short-term renovations | No short-term renovations |
| Negotiation possible | Strong if rated F or G | Low | Low, but progressive fund calls |
| Specific guarantees | Only hidden defects | Two-year and ten-year guarantees | Two-year, ten-year guarantees, 5% holdback until keys are handed over |
For the same budget, the DPE label modifies the actual cost of the operation by several thousand euros. First-time buyers who target the old market due to price reflex often underestimate this energy-related additional cost.
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A comprehensive overview of the arbitrations to be made, from financing to diagnostics, is detailed in the ImmoGuru real estate guide, which structures these decisions by project type.
Mortgage rates and HCSF threshold: profiles that tip over
The nominal rate tells only part of the story. The High Council for Financial Stability imposes a maximum debt ratio, generally set around one-third of income. Households close to this threshold find themselves in a gray area: a few tenths of a percentage point increase in the rate is enough to shift a file from “accepted” to “refused.”
The European regulation CRR3 may increase the cost of mortgage credit for banks. This text introduces a floor of 72.5% for internal risk calculation models, with transitional measures planned until 2032. This additional cost of equity, even if moderate, is intended to be passed on in the borrowing conditions offered to individuals.
The most exposed profiles can be identified:
- Households whose debt ratio already exceeds 30% before the project, who lose all maneuvering room as soon as the nominal rate increases
- Borrowers without substantial personal contribution, for whom the cost of borrower insurance adds to the rate and pushes them over the HCSF threshold
- Buyers of an energy-intensive old property, whose bank anticipates a renovation cost that deteriorates the perceived repayment capacity
Personal contribution remains the main lever to stay below the HCSF threshold. Increasing the contribution by a few thousand euros reduces the borrowed capital, thus lowering the monthly payment, and brings the file back under the limit.
Buy now or wait: the variables to monitor for arbitration
The question “buy today or wait” does not have a universal answer. It depends on three variables that evolve in opposite directions each quarter: the level of rates, the price of properties, and the severity of banking criteria.
Waiting for a rate drop seems logical, but a drop in rates stimulates demand and drives prices up. The gain on the monthly payment can be absorbed by a higher purchase price. The total cost of credit only decreases if prices remain stable while rates fall, a scenario that does not occur systematically.
For a buyer facing energy renovations, waiting presents an additional risk. Renovation obligations are gradually becoming stricter, which reduces the supply of energy-intensive properties available at low prices. Sellers anticipating these constraints prefer to sell quickly, but this window is closing as regulatory deadlines approach.
The VEFA offers an interesting intermediate mechanism: the reservation schedule and progressive fund calls spread the disbursement over the duration of the construction. In VEFA, the buyer locks in the remaining 5% until the keys are handed over, which provides protection against defects and a natural smoothing of the financial effort.
Bank file and rental investment: two distinct financing logics
A loan file for a primary residence and a file for a rental investment are constructed differently. The bank values only a fraction of the projected rents in the calculation of borrowing capacity, which mechanically reduces the budget accessible for an investor.
Setting up a rental file requires a higher contribution and a larger residual savings than for a primary residence. Banks apply a discount on anticipated rental income to cover the risk of vacancy or unpaid rent.
- For a primary residence, all professional income is included in the calculation of borrowing capacity
- For a rental investment, only a portion of the projected rents is retained, which imposes a more substantial contribution
- Borrower insurance weighs proportionally more heavily on a rental credit, as the borrowed capital compared to net income is often tighter
A first-time buyer who is hesitating between buying their primary residence and making a first rental investment must compare these two financing logics before consulting their bank. The choice determines the loan amount, duration, debt ratio, and structure of the contribution.
The real estate market in 2026 remains marked by fragile transaction volumes and an energy label that increasingly weighs in every negotiation. Building a solid project involves mastering these three levers (rates, DPE, granting rules) rather than waiting for a market signal that is slow to stabilize.