A couple signs a preliminary sales agreement for an apartment rated F without reviewing the condominium association’s meeting minutes. Six months later, the association votes against insulation work, meaning the property can no longer be rented out from 2028. Situations like this arise when a property purchase is treated as a series of formalities, even though every stage involves technical pitfalls that can cost tens of thousands of euros.
Energy ratings and rental standards to check before buying a property
Since January 1, 2025, homes rated G in mainland France have no longer met the energy-efficiency standard for new leases, renewals, or tacit extensions. F-rated homes will follow in 2028, then E-rated homes in 2034. For a purchase intended as a rental investment, checking the energy rating before making an offer is essential to the project’s profitability.
The energy performance certificate (DPE) is often confused with the energy audit, which is a separate document. Since January 2025, an energy audit has been mandatory when selling a detached house or a building under single ownership rated E, F, or G. It sets out renovation scenarios with cost estimates. However, this requirement does not apply to apartments in condominiums.
Buyers considering an energy-inefficient house can therefore request this audit to assess the actual cost of the work before making an offer. A portal such as ambiance-immo.eu helps narrow down a search by combining location, property type, and technical features, making it easier to identify these constraints at the outset.

Property budget: what borrowing capacity doesn’t tell you
Borrowing capacity is the maximum amount a bank is willing to lend. It is calculated by subtracting fixed expenses from net income, then applying a debt-to-income ratio capped at 35% since January 2022. Most online calculators provide this figure in just a few clicks.
The problem is that borrowing capacity does not cover the project’s actual budget. It excludes notary fees (which account for a significant share of the purchase price for older properties), any work needed to bring the property up to code, condominium fees, and moving costs. Once these expenses are added up, the amount available for the property itself shrinks considerably.
Costs often overlooked when calculating your budget
- Notary fees are higher for older properties than for new builds. Leaving them out of the budget from the start can throw off your entire search.
- Energy-efficiency renovations on an E- or F-rated property can affect the profitability of a rental investment. Where available, the energy audit provides useful scenarios for estimating these costs.
- Condominium fees vary considerably from one building to another. Requesting the three most recent statements and the general meeting minutes can reveal approved or upcoming work.
- Fees charged by a mortgage broker, if you use one, add to the total cost of the loan.
A down payment that covers at least the additional costs helps prevent you from starting the loan with an already stretched debt-to-income ratio.
Buying a condominium apartment: review the meeting minutes before signing
When buying an apartment, condominium decisions matter just as much as the condition of the property. A building renovation approved but not yet billed will result in payment requests in the months after the purchase. Roof repairs postponed year after year may point to a reluctant association, which could block the insulation work needed to maintain the property’s energy rating.
First-time buyers do not routinely request the minutes from the three most recent general meetings. These documents list approved work, amounts due, ongoing disputes, and the financial health of the reserve fund required under the ALUR law.
Reviewing these documents takes time, but it can reveal future costs that are not mentioned in the listing or during the viewing. A notary can help interpret technical clauses, while an experienced condominium manager can put the figures into context.

Purchase offers and preliminary sales agreements: clauses that protect you
A purchase offer is a commitment. Once accepted by the seller, it obliges the buyer to proceed with the transaction unless they invoke a condition precedent. Clearly worded conditions precedent protect you if your mortgage is refused or a hidden defect is discovered.
The mortgage approval condition is the best-known example. It specifies the loan amount, the maximum interest rate, and the loan term. If the bank refuses financing within these parameters, the buyer gets their deposit back. Setting the maximum rate too low can provide an improper way out, but setting it too high removes any protection.
Other clauses to negotiate in the preliminary sales agreement
A substitution clause allows you to be replaced by a property-holding company (SCI) or another buyer without renegotiating the price. It is useful when the legal structure of the financing has not yet been finalized at the time of signing.
A clause covering property inspections requires the seller to provide a complete set of reports (asbestos, lead, termites, and energy performance). If a report is missing or proves inaccurate, the buyer can request a price renegotiation or, in some cases, cancellation of the sale.
The statutory cooling-off period is ten days from receipt of the preliminary sales agreement. This period runs even if all the inspection reports have not been provided, making it all the more important to review the documents carefully from the outset.
A property purchase is about more than finding a home you like and securing a mortgage. The profitability of a rental investment depends on the energy rating and rental standards. The actual budget exceeds your borrowing capacity. Condominium fees affect the cost of ownership. And the clauses in the preliminary sales agreement determine your options if something unexpected happens. Every stage of the process deserves a technical review, not just an administrative one.



