
10 tips to prepare your real estate purchase file in 2025
In an increasingly competitive market, being well prepared makes a difference. Whether you're buying for the first time or you're a seasoned investor, having a strong, clear, and complete purchase case can tip the scales in your favor. In 2025, the expectations of banks, agencies and sellers are stricter: tighter debt ratio, increased credit checks, increased documentation requirements. Here are the 10 key steps to presenting a flawless file.
1. Accurately assess your borrowing capacity
Before looking for a property, it is essential to calculate the amount you can borrow. This requires a realistic simulation taking into account your net income, your fixed costs and your contribution. Don't overestimate your capacity: banks are strict on the debt ratio (often limited to a maximum of 35%).
Tip : Use an online simulator and then confirm with your bank advisor or broker.
2. Obtain a banking agreement in principle
An agreement in principle (also known as a "pre-loan agreement") shows the seller that you are already supported by a bank. Even if it does not guarantee the final granting of the loan, it reinforces the credibility of your profile.
Advantage : it speeds up the process after the signing of the agreement.

3. Build a consistent personal contribution
Today, a deposit representing 10 to 20% of the amount of the property is often required. It usually covers notary fees, warranty fees, or even part of the purchase price. The absence of a down payment is not always prohibitive, but it limits your financing options.
4. Gather all supporting documents
- Last 3 payslips
- 2 last tax notices
- Account statements for the last 3 months
- Employment contract (permanent contract ideally)
- Proof of contribution (Livret A, savings, etc.)
- Identification
- Proof of address
Tip : File them neatly in a single PDF or binder, with a table of contents if needed.
5. Anticipate available financial aid
Zero-interest loans (PTZ), Action Logement aid, home savings loans... Some schemes remain available in 2025, under certain conditions. Find out beforehand to integrate them into your financing plan.
6. Prepare a "seller-friendly" file
Beyond the bank, the salesperson wants to make sure you're serious. Attaching a clear cover letter, proof of bank agreement in principle, and a summary financial file to your purchase offer reassures and gives credibility to your proposal.
7. Use a mortgage broker (optional but useful)
A broker can optimize your file, negotiate better conditions and check its solidity before bidding. It also helps you to set up a financing strategy adapted to your profile and to the banking standards of 2025.
8. Take into account additional costs
9. Reflect on the negotiation strategy
10. Stay Responsive and Organized
A checklist to secure your project

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