The French real estate market has been going through a transition phase for several months, with price adjustments and regulatory changes. In this context, successfully completing a real estate project requires mastering specific mechanisms, from the initial estimate to the signing at the notary’s office. Classic guides outline a list of steps without always addressing the concrete tools that allow for informed decision-making.
Check the actual price with the DVF database before making any purchase offer
The majority of buyers rely on estimates from listing portals or the opinions of a real estate agency to judge whether a price is reasonable. These sources are useful, but they reflect listed prices, not actual sale prices.
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The Demande de Valeurs Foncières (DVF) database changes the game. Accessible for free via public portals app.dvf.etalab.gouv.fr or explore.data.gouv.fr, it lists all notarized transactions since 2014. For each sale, the date, price, area, and type of property appear on an interactive map.
Before making an offer on a house or apartment, simply consult the sales completed in the same neighborhood over the past few years. If the seller is asking for a price significantly higher than comparable transactions, you have a factual argument to negotiate.
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Conversely, a property offered below the local median price deserves increased vigilance regarding potential hidden defects. To learn more about Projet Immobilier, this verification process serves as a solid starting point.
Borrowing capacity and mortgage: what simulators don’t tell you
Calculating your borrowing capacity online takes just a few minutes. The displayed result is based on the maximum debt ratio and the chosen loan duration. This theoretical amount does not always correspond to what a bank will actually agree to finance.
Credit institutions analyze the “remaining to live” after repaying monthly installments, professional stability, the nature of the project (primary residence or rental investment), and the level of personal contribution. An insufficient contribution can block a file even with low debt.
Several elements deserve particular attention when preparing the loan application:
- The total cost of the loan, which includes borrower insurance, processing fees, and guarantees (mortgage or surety), often exceeds the simple calculation of interest
- The modularity clause, which allows for increasing or decreasing monthly payments during the loan term, is not offered by all institutions
- The usury rate, the legal ceiling beyond which a bank cannot lend, fluctuates each quarter and can make a file financeable one month and unfinanceable the next
Consulting a broker can sometimes unlock situations that online simulators do not detect, especially when the borrower’s profile has specific characteristics (self-employed, variable income, purchase in a real estate company).
Urban planning simplification law: what changes for project timelines
Buyers considering renovations, an extension, or new construction must account for a recent regulatory change. The law n°2025-1129 of November 26, 2025 modifies several rules of the urban planning code with direct consequences on the management of a real estate project.
The period for a gracious or hierarchical appeal against an urban planning authorization is reduced from two months to one month. This appeal no longer extends the time limit for initiating contentious proceedings. For a buyer, this means that the period of uncertainty after obtaining a building permit is significantly reduced.
The law also strengthens administrative penalties in case of non-compliance with the permit. A seller who has carried out work without authorization or exceeding the authorized scope faces heavier consequences. For the buyer, checking the compliance of the work done by the seller becomes even more relevant.
Check urban planning compliance before the sales agreement
Requesting an operational urban planning certificate at the town hall before signing the preliminary agreement confirms that the land or property allows for the proposed project. This document specifies the applicable rules (height, footprint, easements) and the list of taxes due.
Field feedback varies on this point: some notaries systematically check compliance, while others consider this step to be the buyer’s responsibility. Including a suspensive condition related to obtaining the permit or verifying compliance remains a useful precaution.
Sales agreement and notarial deed: clauses that protect the buyer
The signing of the sales promise (or preliminary agreement) legally binds both parties. This document sets the price, conditions, and deadlines. Several clauses deserve to be negotiated rather than simply accepted:
- The suspensive condition of obtaining a loan, mandatory unless expressly waived, should provide a realistic timeframe (the available data does not allow for a universal standard, but a timeframe that is too short risks losing the deposit)
- The suspensive condition related to the absence of undeclared easements or hidden defects affecting buildability
- The penalty clause, which sets the amount of damages in case of unjustified withdrawal, can be adjusted during negotiations
Each clause of the preliminary agreement is negotiated before signing, not after. The notary drafts the deed, but is not intended to defend the interests of only one party. Carefully reviewing the draft deed, asking questions about any unclear clauses, and requesting modifications remains the buyer’s responsibility.
Between the preliminary agreement and the authentic deed, the notary carries out the usual checks (mortgages, easements, municipal preemption rights). This period, which generally extends over several weeks, allows time to finalize the mortgage arrangement and lift the suspensive conditions.
A well-managed real estate project relies less on a linear checklist and more on the ability to identify the friction points specific to each situation. Consulting actual prices via DVF, anticipating urban planning timelines, and negotiating each clause of the preliminary agreement are three concrete levers that reduce risks without complicating the process.