The bank notary is a public officer mandated by a credit institution to authenticate acts related to a mortgage loan, notably the conventional mortgage and the lender’s privilege. His role is distinct from that of the buyer’s notary: he does not defend the interests of the borrower but guarantees the legal validity of the security established in favor of the bank.
Deposit of funds with the notary: a protection that the bank alone does not provide
In a real estate transaction financed by a loan, the funds released by the bank pass through the notary’s account before being paid to the seller. This mechanism is not trivial.
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In France, the funds held by a notary are deposited with the Caisse des dépôts et consignations. This legal obligation strictly separates clients’ money from that of the notarial office. The level of protection is higher than that of a traditional bank account, as it benefits from state guarantees.
For the borrower, this means that the sale price, the deed fees, and the mortgage guarantee remain protected between the release of the loan and the signing of the final deed. Understanding why to call on a bank notary starts with this reality: the notarial escrow constitutes a safety net that neither a direct transfer between the bank and the seller nor an ordinary third-party account can replicate.
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Authentic act and mortgage: what the bank notary checks concretely
The bank notary drafts the loan deed in authentic form. This document has probative force and enforceability that a private deed does not have.
The enforceability exempts the bank from going to court in the event of borrower default. The lender can directly initiate a property seizure procedure based on the notarial deed. For the borrower, this rigor has an indirect advantage: the bank, better protected, accepts interest rate or duration conditions that it would refuse without a mortgage guarantee formalized by an authentic act.
Control points of the bank notary
The work of the bank notary is not limited to affixing a seal. Before receiving the signature, he performs several concrete checks:
- The identity and legal capacity of the borrower (marital regime, possible guardianship, situation of joint ownership), as an error at this stage can render the mortgage unenforceable.
- The compliance of the mortgaged property: existence of the title of ownership, absence of incompatible easements, verification of the mortgage status with the land publicity service.
- The respect of regulatory obligations related to the fight against money laundering (AML-CFT), which requires the notary to verify the source of funds and report any suspicious transactions.
- The consistency between the loan offer accepted by the borrower and the clauses of the authentic act (amount, rate, duration, early repayment conditions).
This list is not an administrative formality. Each verification reduces a specific legal risk, both for the lender and the borrower.
Cybersecurity and verification of transfers: a recent challenge for the bank notary
Fraud involving fake bank account details has become a real risk during real estate transactions. The classic scenario involves intercepting the email containing the bank account details of the notarial office and then replacing it with fraudulent IBAN. The buyer or the bank then makes a transfer to an account controlled by the scammer.
Since October 2025, all European banks are required to offer a Payee Verification service. This system automatically checks the correspondence between the payee’s name and the IBAN before executing a SEPA transfer. For notarial transactions, this control adds a layer of security at the moment the bank releases funds to the notarial office’s account.
The bank notary also intervenes upstream: he sends the statement and the bank account details of the office via secure channels, not just by unencrypted email. Cross-checking the bank account details by phone remains recommended before any high-value transfer.
Transfer of shares in a real estate company: when the bank notary becomes mandatory
The role of the bank notary is not limited to traditional residential mortgage credit. A reform announced by the Notaires de France plans for increased recourse to the authentic act for transfers of shares in real estate-dominant companies.
This evolution meets a dual objective. The first is legal security: a notarial act guarantees that the transfer is enforceable against third parties and that the formalities of land publicity are respected. The second concerns AML-CFT compliance, as these operations often involve large amounts and complex asset structures.
For a borrower financing the acquisition of shares in a real estate investment company (SCI) through a bank loan, the bank notary verifies that the mortgage indeed covers the shares or the property held by the company, depending on the chosen structure. An error in establishing the security can render the loan unsecured, exposing both the bank and the borrower.
Fees of the bank notary and distribution between borrower and lender
The fees related to the intervention of the bank notary are borne by the borrower, even if this notary is chosen by the bank. These fees include regulated fees (set by decree, calculated on the loan amount), the land publicity tax, and disbursements (expenses incurred with the administration).
These fees should be distinguished from those of the buyer’s notary, which cover the drafting of the sale deed and transfer taxes. The two items add up in the total cost of the operation, but they compensate for distinct services.
The bank notary is not an optional intermediary in the mortgage credit process. His intervention structures the guarantee that allows the bank to lend and the borrower to access property within a legally secure framework. With the strengthening of anti-fraud controls and the expanded use of the authentic act for asset transactions, his role has further consolidated in recent years.