Paris Notaires Services - Direction des Activités Immobilières

What Paris Notaires Services - Direction des Activités Immobilières does

Notantis (formerly Paris Notaires Services) is a non-profit association (Association Loi 1901) created in 1994 at the initiative of the Chambre des Notaires de Paris, operating as the Direction des Activités Immobilières of the Paris notary chamber. It provides digital, data, and real estate services to French notary offices, real estate professionals, public-sector entities, and individuals, with primary geographic focus on Île-de-France and selective national coverage. In 2025 the organization rebranded to Notantis alongside the launch of 12 Victoria, a premium event venue at the renovated Hôtel du Châtelet.

The core product portfolio comprises: Espace Notarial, a secure collaborative dataroom platform hosting 60,000+ active datarooms with over 1 million documents shared since 2011; Confiance RIB, a fraud-prevention application for secure exchange of bank account details that has processed 500,000+ RIBs at 25,000 transactions per week since its 2022 launch; Base BIEN, a real estate transaction database covering 30+ years of notary-authenticated acts across 7 property types with 100+ variables per transaction, supplemented by an AI-powered estimator and territory analysis modules; Ventes aux enchères notariales, a multi-channel auction platform (in-room, online, phone, order) with 45+ media partners and an 86% success rate; Expertise immobilière, a RICS/REV-certified appraisal service with 25+ years of operating history; Formation continue, a professional training catalog with 35 modules deployed in 2024 and a 90%+ satisfaction rate; and Plateforme APUI, an urban-project calls-for-proposals platform adopted by the Ville de Paris and Métropole du Grand Paris. Technology is built in-house by the Direction des Services Numériques, with France-hosted RGPD-compliant infrastructure. All products are protected as registered trademarks including Notantis, 12 Victoria, Confiance RIB, Base BIEN, and APUI.

The business model combines subscription and usage-based fees for digital platforms (Base BIEN uses a pre-paid account model with pay-per-use billing), per-transaction/per-report fees for auction and expertise services, training enrollment fees, and venue rental revenue from 12 Victoria. Distribution is multi-channel: direct institutional access through the Chambre des Notaires de Paris network, dedicated field sales for professional clients (collectivités, promoteurs, bailleurs sociaux), self-service digital portals for Base BIEN and Confiance RIB users, a public-facing platform at immonotairesencheres.com for consumer auction participation, and a dedicated 12Victoria.com booking site. Pricing tiers are not publicly disclosed, consistent with a non-profit, quote-based commercial model. Management is led by Maurice Mongelard (Directeur général), Marc Cagniart (Président du conseil de surveillance), and Jérémy Guyon (Directeur général adjoint).

Name

Paris Notaires Services - Direction des Activités Immobilières

Legal name

NOTANTIS

Website

https://paris-notaires-services.fr

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

1–10 employees

Short description

Notantis is a non-profit association created by the Chambre des Notaires de Paris that delivers digital notarization tools, real estate transaction data, auctions, property appraisals, training, and a Parisian event venue to French notary offices and real estate professionals.

Ownership category

akta.pro rank

Product category

Notary and Real Estate Services

NAICS

Offices of Notaries (541120)

SIC

Real Estate Agents & Managers (For Others) (6531)

akta.pro primary industry

Notary & Signing Agent Services (Remote/Onsite) (BPAJAOAF)

Keywords

• Notary services
• Real estate data
• Property valuation
• Secure document exchange
• Professional training

Headquarters

HQ city

Paris, Île-de-France

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Professional Services to Notaries: Notantis provides digital and real estate services to notary offices, including Espace Notarial datarooms, Confiance RIB, Base BIEN access, expertise-immobiliere reports, and auction organization. Revenue is generated through subscription and usage-based fees for digital platforms and per-transaction/per-report fees for services. Notantis is a non-profit association (Association Loi 1901) created by the Chambre des Notaires de Paris, operating without a commercial profit logic.
2. Event Space Rental (12 Victoria): Premium event space rental at 12 Victoria, Hotel du Chatelet (12 Avenue Victoria, Paris). Three event spaces ranging from 136-275m2 with capacities up to 300 persons. Revenue from venue rental bookings for corporate events, receptions, conferences, and cultural events.
3. Base BIEN Data Access: Access to the Base BIEN real estate transaction database is available to notaries, real estate professionals, public entities, and collectors. Pre-paid account model with usage-based billing. Data services support professional decisions, property valuations, market studies, and urban planning.
4. Formation Continue (Continuing Education): Professional training catalog for notaries and their collaborators. Regional training program with 35 modules deployed in 2024, available in-person or remote. Revenue from training course enrollment fees.
5. Notarial Auction Services: Notantis organizes notarial real estate auctions on behalf of notary offices across France. Services include auction publication, candidate management, multi-channel bidding infrastructure, and legal document preparation. Revenue model not publicly disclosed.

Pricing tiers

Go-to-market motion3 records

Distribution channels7 records

Marketing channels8 records

Core offering

Notantis provides digital and real estate services to notaries, real estate professionals, and public entities, including secure document sharing (Espace Notarial datarooms), fraud-proof RIB exchange (Confiance RIB), certified notarial transaction data (Base BIEN database with 30+ years of records), notarial auction organization (Ventes aux enchères), certified property appraisal (Expertise immobilière), continuing professional education (Formation continue), an online urban project calls-for-proposals platform (APUI), and premium event venue rental (12 Victoria at Hôtel du Châtelet, Paris).

Product overview

Notantis operates as a multi-module service platform for the notary and real estate sector. The core offerings include: (1) Espace Notarial - a collaborative dataroom platform for secure document management; (2) Confiance RIB - a secure banking detail exchange tool to prevent fraud; (3) Ventes aux enchères - a multichannel real estate auction service with 86% success rate; (4) Base BIEN - a 30+ year database of notarized real estate transactions with AI-powered estimation capabilities; (5) Expertise immobilière - certified property appraisal services; (6) Formation continue - professional education catalog; (7) 12 Victoria - premium event venue; (8) Plateforme APUI - urban project proposal management. The platform serves notaries, real estate professionals, public entities, and individuals with solutions spanning transaction management, data analytics, fraud prevention, and professional development.

Differentiator

Problem solved

Functional benefit

Brands

• 12 Victoria: Event space rental location at Hôtel du Châtelet, 12 Avenue Victoria, Paris. Offers prestigious event spaces for conferences, receptions, cocktails, and dinners with BBCA certification.

Products and services

• Espace Notarial Private collaborative platform and electronic dataroom for notaries to securely share sensitive documents with clients, manage complex real estate transactions, and maintain full traceability of exchanges. Developed in 2011, hosting over 60,000 active datarooms and 1M+ documents shared, with personalized access rights, automatic notifications, integrated reporting, and France-hosted secure storage compliant with RGPD.
• Confiance RIB Secure application for exchanging bank account details (RIB) between notaries and their clients to prevent banking fraud in real estate transactions. Features unique traceable links per recipient, single-use sending, France-hosted secure interface, encryption and authentication, and compatibility with notary practice management tools. Over 500,000 RIBs exchanged and 25,000 weekly transactions since launch.
• Ventes aux enchères notariales Comprehensive auction service for real estate properties organized by notaries, supporting in-room, online, telephone, and order-based bidding. Includes 3D virtual tours, photo reporting, dedicated CRM for notary support, multi-channel communication across 45+ media partner sites (SeLoger, LeBonCoin, FigaroImmobilier), and dedicated legal document preparation. Reported 86% success rate on auctioned properties.
• Base BIEN Reference notarial real estate transaction database containing 30+ years of act-authenticated records, updated daily. Covers 7 property types with over 100 variables per transaction. Includes property search, price update calculator (Notaires-INSEE index), AI-powered property estimator, statistical modules, and territory analysis. Available via pre-paid account model with usage-based billing to notaries, real estate professionals, public entities, and collectors.
• Expertise immobilière Independent and certified real estate appraisal service for evaluating all property types. Experts are RICS or REV certified, following TEGOVA and RICS Red Book standards. Over 25 years of experience, with national coverage and particular focus on Île-de-France and PACA regions. Used for financing, taxation, inheritance, donation, and dispute resolution contexts.
• Formation continue Continuing professional education catalog for notaries and their collaborators, covering legal and technical subjects relevant to notarial practice. Offers 35 modules deployed in 2024, available in-person, distance learning, or virtual classes. Maintains over 90% participant satisfaction rate.
• 12 Victoria Premium event venue at 12 Avenue Victoria, Paris, located within the historic Hôtel du Châtelet (BBCA certified). Offers three unique event spaces totaling 639 m², including the Salle des Adjudications (127 m²) and Salle des Séances (126 m²), with capacity up to 300 persons. Available for conferences, receptions, dinners, shootings, and cultural events.
• Plateforme APUI (Appels à Projets Urbains Innovants) Online platform for managing urban innovation project calls-for-proposals. Centralizes the entire process from publication, candidate submission, jury analysis, to winner selection. Used by major institutions including the Ville de Paris and Métropole du Grand Paris for managing public procurement of real estate development projects.

Quantifiable outcome

• 86% of auctioned properties successfully sold
• +5 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability2 records

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Chambre des Notaires de PariscoreStrategic or Co-development PartnerNotantis was created in 1994 at the initiative of the Chambre des Notaires de Paris. The chamber remains the founding institutional partner, and Notantis operates as the association responsible for the Direction des Activites Immobilieres of the Paris notary chamber. This institutional relationship provides Notantis with exclusive access to notary-authenticated data and professional community trust.
• SeLogerminorGTM or Marketing PartnerMedia partner for notarial auction property listings. Properties are published on SeLoger as part of Notantis's multi-channel marketing strategy for auction listings, reaching over 45 partner sites.
• LeBonCoinminorGTM or Marketing PartnerMedia partner for notarial auction property listings. Properties are published on LeBonCoin as part of the multi-channel auction marketing strategy.
• FigaroImmobilierminorGTM or Marketing PartnerMedia partner for notarial auction property listings. FigaroImmobilier distributes auction property listings as part of the Notantis media partnership network.
• Atelier Senzu and Lagneau ArchitectesminorImplementation/ SI/ Consulting PartnerArchitecture firms responsible for the renovation of the Hotel du Chatelet (12 Victoria) after over two years of restoration work, combining historic prestige with modern design.
• Kaspia, Te Traiteur, Dalloyau, Grand Chemin, Terres (Catering)minorOthersHigh-end catering partners for 12 Victoria event venue, providing premium dining services for corporate events, receptions, and dinners at the historic venue.
• Groupe Optimiz (Scenography)minorOthersScenography and custom layout partner for 12 Victoria events, providing tailored setups and event configurations.
• Mon Hotesse Bien Aimee / Groupe GR (Reception/Concierge)minorOthersReception and concierge service provider for 12 Victoria events, ensuring professional guest hosting.
• Amoguard (Security)minorOthersSecurity service provider for 12 Victoria events, ensuring safe event operations.

Scale indicators11 records

Recent moves11 records

Expansion highlights6 records

Emerging players

• Yousign: French electronic signature platform serving SMBs and regulated professions. Comparable to Confiance RIB and Espace Notarial on the digital signing and document exchange layer, though more general-purpose and not notary-specific.

Direct peers

• Bien'ici: Real estate portal co-founded by several French Chambers of Notaires, providing property listings, price estimators, and transaction tools. Directly comparable to Notantis because it serves the same notarial ecosystem and competes in real estate data and search tools.
• Chambre des Notaires du Rhône (and other departmental chambers): Departmental notary chambers that operate their own real estate services, training, and digital tools parallel to Notantis. Most directly comparable institutional peer given the same Association Loi 1901 structure, similar services, and shared profession-wide mandate.
• Conseil National du Notariat (Notaires de France): National professional body of French notaries, owner of the LegaLife / Notariat digital platforms and operator of official notary directories. Closest institutional peer to Notantis given shared notarial mandate and digital service ambitions.

Broad incumbents

• Docaposte: Digital trust services subsidiary of La Poste group offering certified electronic signatures, electronic registered mail, and secure document platforms. Comparable to Espace Notarial and Confiance RIB at the secure document/identity layer, with much broader scope.
• SeLoger: France's leading residential real estate listings portal, owned by the Axel Springer group. Already a media partner for Notantis auctions but also a competitor in property discovery, pricing data, and consumer-facing real estate search.
• MeilleursAgents: Leading commercial French real estate price estimation and agent-matching platform. Comparable to Notantis's Base BIEN and Estimator products, though as a commercial for-profit with venture backing rather than a chamber-affiliated service.
• LeBonCoin Immobilier: France's largest classified listings site, with a substantial real estate vertical. Comparable to Notantis's auction listings and event space discovery, and also an existing media partner. Acts both as a competitor (consumer-facing property discovery) and a distribution channel.

Regional players

• Fnaim (Fédération Nationale de l'Immobilier): French federation of real estate professionals (agents, property managers, brokers). Comparable to Notantis on the real estate data and professional services layer, though operating on the agent side of the transaction rather than the notary side.

Others

• DVF (Demandes de Valeurs Foncières): Open French government dataset of all real estate transactions, published by Etalab/DGFIP. Direct alternative to Base BIEN for property transaction data, though without the notary-authenticated depth and tools layer.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/Notantisservicesimmobiliers
• LinkedInlinkedin.com/company/pnsactivitesimmobilieres
• Instagraminstagram.com/notantis_servicesimmobiliers

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Paris Notaires Services - Direction des Activités Immobilières