The real estate prospecting market has been navigating a turbulent regulatory environment since the summer of 2026. Law No. 2025-594 of June 30, 2025, and its implementing decree No. 2026-662 of July 23, 2026, abolished the Bloctel system to replace it with a strict opt-in logic. In this context, the digital tools used by real estate professionals must adapt quickly or face severe penalties.
Strict opt-in and real estate prospecting: what the 2026 law changes
Since August 11, 2026, no individual can be contacted without explicit prior consent. The publication of a real estate listing by an owner does not constitute an agreement to receive commercial calls. This point, clarified by recent legal analyses, disrupts the functioning of traditional real estate prospecting.
Professionals who collected phone numbers from online listings to approach sellers previously operated within a tolerated framework. This framework no longer exists. Contracts concluded in violation of the new system are subject to nullity, and associated GDPR breaches (lack of consent, inability to prove the origin of the data, ignored opposition) expose them to fines of up to 4% of global revenue or €20 million.
For an independent agent or a property management firm, the risk is not theoretical. CNIL controls over commercial prospecting have intensified, and leaks of prospect files are now subject to enhanced notification obligations.
Detectis Immo and the repositioning of prospecting tools
In response to this regulatory constraint, several platforms have revised their approach. The challenge is to shift from an outbound prospecting logic to an attraction and intelligent matching logic, where the professional only contacts prospects who have given verifiable consent.
In this reshaping landscape, Detectis Immo’s real estate solutions offer a positioning focused on the detection and analysis of real estate data rather than on direct telemarketing. The principle relies on cross-referencing public sources (land registry, property value data, energy performance diagnostics) to identify opportunities without violating the new consent rules.
This type of tool does not exempt the professional from verifying the compliance of each contact made. However, it reduces dependence on phone lists whose origins are difficult to trace.
Cross-referencing real estate databases: technical advantages and limitations
Multi-source matching has become a central argument for PropTech platforms. The principle seems simple: cross-reference land registry, DVF, DPE, and directories to locate a property or identify an owner. In practice, the reliability of the result depends on several factors that field feedback helps to clarify.
- The quality of public databases varies by municipality. DVF (Demandes de Valeurs Foncières) data is comprehensive for recent transactions but lacking for properties that have never been sold since the system was established.
- The cross-referencing of land registry/DPE can generate false positives when multiple lots exist at the same address, especially in urban condominiums.
- The update of DPE data depends on the frequency of mandatory diagnostics, creating a sometimes significant time lag between the actual state of the property and the available information.
Field feedback varies on the accuracy of reverse geocoding (finding an address from a listing description). Some professionals report high match rates in dense urban areas, while results in rural areas remain more unpredictable.
Property management and GDPR compliance: a parallel project
The impact of the reform is not limited to transactions. Agencies specializing in property management are also affected, especially when prospecting landlord owners to expand their portfolio.
Any contact database created before August 2026 must be audited. Files for which the origin of consent cannot be documented become unusable as is. This constraint particularly affects mid-sized structures (independent firms, property management LLCs) that had not formalized their collection processes.
Notification obligations in the event of data leaks have been strengthened. A firm that suffers a data breach must now alert the CNIL within strict deadlines, under penalty of cumulative sanctions.
- Document the origin of each contact (timestamped web form, handwritten signature, unchecked checkbox)
- Establish a compliant processing register, accessible in case of inspection
- Implement an automatic purge procedure for inactive contacts beyond a defined duration
Real estate detection tools: selection criteria for an independent agent
The market for prospecting and real estate detection tools has become denser. For an independent agent or a small firm, the choice of a platform is based on concrete criteria that go beyond marketing promises.
The number of cross-referenced databases does not guarantee the relevance of the results. A tool that cross-references three reliable and up-to-date sources will be more useful than another that claims sixteen databases but includes outdated directories. The frequency of updates for land registry and DVF data is a more reliable indicator than raw volume.
Compatibility with the new regulatory framework is a non-negotiable criterion. A tool that provides phone numbers of individuals without proof of opt-in exposes its user to direct penalties. The available data does not yet allow us to conclude whether all market players have integrated this constraint into their functionalities.
Interoperability with existing real estate CRMs facilitates integration into daily workflows. An isolated tool, no matter how efficient, loses some of its value if it requires redundant manual entries.
The regulatory framework that came into effect in August 2026 has rendered practices that seemed established obsolete. Real estate detection tools like those offered by Detectis Immo provide a way to adapt, provided that each professional verifies the compliance of their own uses. Technology facilitates access to information, but legal responsibility remains individual.