A real estate project is prepared well before the first visit. Budget, financing, diagnostics, property choice: every decision made in advance conditions the next steps. Here are ten concrete tips to approach the preparation of your real estate project methodically and avoid costly mistakes.
1. Calculate your actual debt ratio before contacting the bank
Before applying for a loan, take stock of your fixed expenses: ongoing loans, alimonies, subscriptions deducted each month. The maximum debt ratio remains set at 35% of net income, and the HCSF rules have not been relaxed despite repeated requests from the banking sector.
Specifically, if your net monthly income amounts to a certain figure, add up all your future monthly payments (including the mortgage). The result must not exceed this threshold. Anticipating this calculation helps you avoid disappointment when applying for financing.
You will also find many tips for a real estate project that detail the financial elements to gather at this stage.
2. Check the property’s energy performance certificate (DPE) and its rental implications
As of January 1, 2025, a property classified as G can no longer be rented out in mainland France. The ban will extend to properties classified as F in 2028. If your project is a rental investment, an unfavorable DPE can render the property unlettable without prior work.
The method of calculating the DPE has also evolved for properties heated by electricity. A recent diagnosis may therefore yield a different classification than the old one. Always ask if an updated DPE is available before committing.
3. Review the co-ownership documents before signing
In co-ownership, your budget does not solely depend on the purchase price. Since 2025, the multi-year work plan also applies to co-ownerships with no more than 50 lots that are over fifteen years old. Energy renovation work may already have been voted on or scheduled.
Request the minutes of the last general meetings and the maintenance log. These documents reveal upcoming expenses: facade renovation, insulation, replacement of the collective boiler. Ignoring the collective work schedule can distort your budget by several thousand euros.
4. Distinguish between the purchase budget and the overall project budget
The displayed price of a property represents only a part of the total expense. Have you noticed that ancillary costs are often underestimated by buyers?
Your overall budget should include:
- Notary fees, which vary depending on whether the property is new or old
- Any necessary compliance or energy renovation work
- Loan guarantee fees (surety or mortgage) and bank processing fees
- The cost of moving and the first months of charges
Estimating these items in advance helps avoid financial strain after signing.
5. Encourage competition between brokers and banks
A broker negotiates loan conditions on your behalf, but not all banks agree to work with intermediaries. Submitting a file directly to your main bank and simultaneously through a broker gives you two distinct negotiation channels.
Compare not only the nominal rate but also the total cost of the loan: borrower insurance, processing fees, early repayment penalties. A low rate with expensive insurance may cost more than a slightly higher rate with competitive insurance delegation.
6. Integrate the energy audit into the price negotiation
In single-family homes or buildings in single ownership, the energy audit is now mandatory for the sale of properties classified as E (in addition to F and G). This document quantifies the necessary work to improve the property’s performance.
Use the amount of the work identified in the audit as a negotiation lever. A seller who lists a price without considering poor insulation or an outdated heating system leaves room for legitimate discussion.
7. Adapt the loan duration to your wealth strategy
The maximum loan duration is capped at 25 years (27 years for new properties under VEFA with a deferral). Lengthening the duration reduces the monthly payment but increases the total cost of the loan. Why does this choice matter so much?
If you are buying your primary residence to stay long-term, a shorter duration reduces the overall cost. For a rental investment, a longer duration can improve monthly cash flow while maintaining borrowing capacity for a second project.
8. Visit the neighborhood at different times before committing
A visit in mid-morning on a Tuesday does not give the same impression as a Friday evening or a Saturday morning. Noise levels, traffic, parking availability, and the overall atmosphere change depending on the time.
Walk through the neighborhood in the evening, on a weekday, and on the weekend. Check the actual proximity of transport, shops, and schools on foot, not just on a map. A good location is confirmed on the ground, not in an ad.
9. Anticipate resale from the moment of purchase
Even if you are buying to live in, the question of resale should be considered from the start. An atypical property (dark ground floor, elongated layout, lack of parking) may attract interest at a reduced price but prove difficult to resell.
Favor characteristics sought by the majority:
- Good brightness and a favorable orientation
- An outdoor space, even modest (balcony, terrace, garden)
- Access to transport or smooth road access
10. Get support from a notary from the search phase
The notary does not only intervene at the time of signing. Consulted in advance, they can verify the legal situation of a property (easements, mortgages, preemption rights) and alert you to points that neither the real estate agent nor the seller spontaneously mention.
Consulting a notary before making a purchase offer helps avoid late blockages. This step is inexpensive and can save you several weeks in your real estate project timeline.
Every real estate project has its own constraints, but these ten points form a solid preparation foundation. The DPE, debt ratio, co-ownership documents, and energy audit are now essential steps that weigh as much as the choice of neighborhood or price negotiation.
