A new real estate program refers to a set of housing units built by a developer and often sold before completion, under a VEFA (Sale in Future State of Completion). Adapting this type of purchase to one’s budget requires mastering several mechanisms: actual borrowing capacity, available aids, specific costs associated with new properties, and decisions regarding location. These parameters interact with each other, and an estimation error in any of them can distort the entire financing plan.
Debt Ratio and Actual Capacity: The Framework Set by the HCSF
Before consulting any program, the first data to secure is the borrowing capacity. The High Council for Financial Stability imposes a maximum debt ratio of 35% of net income, including loan insurance. This ceiling applies uniformly, regardless of income level.
In practical terms, a household earning 3,500 euros net per month cannot allocate more than 1,225 euros per month to repay all its loans. If a car loan or consumer credit is already in progress, it reduces the available budget for the mortgage accordingly.
The maximum financing duration is set at 25 years (27 years in the case of a VEFA purchase with deferred repayment during construction). Extending the duration increases the amount that can be borrowed, but also the total cost of the loan. It is necessary to compare several durations to find the compromise between an affordable monthly payment and the overall cost.
To explore new programs on Echangimmo, it is useful to have already simulated this borrowing capacity to directly filter accessible properties.
PTZ 2025 in New Collective Housing: Ceilings, Zones, and Exclusions
The zero-interest loan is the main lever to increase one’s budget for new real estate. The recently implemented reform has profoundly changed its scope.
The PTZ can now finance up to 50% of the cost of a new collective housing unit across the entire territory, including in zones B2 and C, which had been excluded since 2020. Income ceilings have been raised by 7% to 30% depending on geographical areas, making approximately 6 million additional households eligible according to estimates from the Ministry of Housing.
A technical distinction changes everything in budget calculation:
- New apartments in collective buildings are eligible for the PTZ, regardless of the zone
- New individual houses remain excluded from the scheme, which mechanically directs budget-conscious buyers towards collective housing
- The PTZ is reserved for first-time buyers, meaning individuals who have not owned their primary residence in the last two years
This interest-free loan reduces the overall monthly payment and frees up borrowing capacity. For a household close to the 35% debt ceiling, it can represent the difference between a T2 and a T3.
Reduced Costs in New Housing: What the Budget Must Actually Include
New real estate has a structural advantage regarding acquisition costs. Notary fees are around 2 to 3% of the sale price, compared to 7 to 8% in the old market. On a purchase of several hundred thousand euros, the difference represents several thousand euros that can be mobilized elsewhere.
Some programs located in priority neighborhoods or urban renewal areas qualify for a reduced VAT of 5.5% instead of 20%. This reduction, subject to resource and location conditions, radically changes the final price of the housing.
However, the budget must anticipate often underestimated items:
- The cost of parking, sold separately in most collective programs
- Potential customization options (choice of materials, modifications of partitions) charged additionally by the developer
- The condominium fees for the first few months, which can be high in residences with shared amenities (secure bike storage, green spaces, concierge services)
A well-calibrated budget does not stop at the displayed price of the unit. It encompasses all these items to avoid exceeding the budget at the end of the process.
Location and Zoning: Balancing Square Meter Price and Rental Tension
The choice of location determines both the purchase price and the relevance of a potential rental investment. The French zoning system (A bis, A, B1, B2, C) classifies municipalities according to the tension of the local real estate market.
In zone A bis (Paris and neighboring municipalities), the prices per square meter for new properties are the highest in the territory. With the same budget, the accessible area will be significantly smaller than that obtained in zones B1 or B2. The same budget finances a T2 in a tense zone or a T4 in a relaxed zone, with very different consequences depending on the objective (primary residence or rental investment).
For a rental investment, the gross yield is often more attractive in medium-sized cities in zone B1, where the purchase price remains contained against rents supported by student demand or local economic activity. However, resale may prove slower in these less liquid markets.
For a primary residence, proximity to transport, schools, and shops weighs more heavily than theoretical yield. The location of the program within the municipality is as important as the municipality itself: a program located on the outskirts of an attractive city may pose long-term valuation issues.
Reliability of the Developer: Concrete Checks Before Signing
In VEFA, the buyer pays for a property that does not yet exist. The financial solidity and reputation of the developer become criteria for budget security, not just comfort.
The completion financial guarantee (GFA) is mandatory: it ensures that the program will be completed even in the event of the developer’s failure. Checking that this guarantee is indeed extrinsic (issued by a bank or a third-party insurer) is a reflex to have before signing any reservation contract.
Consulting reviews on programs already delivered by the same developer, checking actual delivery times against announced timelines, and examining any reservations made during previous deliveries provides a reliable picture of what to expect. A delivery delay of several months generates additional costs (rent to pay in the meantime, extension of loan deferral) that directly impact the initial budget.
The choice of a new program suitable for one’s budget relies less on the face value of the unit than on the interplay between borrowing capacity, available aids, ancillary costs, and the reliability of the arrangement. A well-calibrated PTZ, reduced notary fees, and a solid developer can offset a high price per square meter, provided that each parameter has been checked before signing the reservation contract.