Guides · Notaries

Notaries and AI: deeds, wills and the parties’ data

Gonzalo Sabater, lawyer · 28 October 2026 · 5 minutes

Comparing a draft with the final deed, summarizing articles of association, preparing a draft will or checking a property’s chain of title: AI can help a notary’s office. But deeds hold exactly the data that most needs protecting: the parties’ identities, ID numbers, marital status, addresses, assets and heirs.

This article is general information, not legal advice. In civil-law countries notaries are public officials bound by strict secrecy; check your chamber’s guidance.

What applies

• Professional secrecy: notaries must keep the content of the deeds they authorize, and what they learn in their work, confidential.
• Data protection: where the GDPR applies, data minimisation and a processor contract with any external provider (Article 28).

Before using AI

1. Replace the parties’ and third parties’ data: names, ID numbers, addresses, marital status, accounts.
2. Remove land registry and cadastral data too: they identify a property, and its owner, as well as a name does.
3. Take care with wills: heirs, legatees and shares identify a family even without names.
4. Review the result before using it.

Where Maskwise helps

Maskwise finds names, ID and tax numbers, addresses, accounts and registry data, in scanned copies too, and keeps Word formatting when replacing them with tags. All on your Mac, offline.